hotfix: fix formatting in 1.x troubleshooting, closes #3868
Scott Anderson
parent
b49f78c6e8
commit
3a18dbc8ce
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@ -15,66 +15,66 @@ Where applicable, it links to outstanding issues on GitHub.
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**Administration**
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* [How do I include a single quote in a password?](#how-do-i-include-a-single-quote-in-a-password)
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* [How can I identify my version of InfluxDB?](#how-can-i-identify-my-version-of-influxdb)
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* [Where can I find InfluxDB logs?](#where-can-i-find-influxdb-logs)
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* [What is the relationship between shard group durations and retention policies?](#what-is-the-relationship-between-shard-group-durations-and-retention-policies)
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* [Why aren't data dropped after I've altered a retention policy?](#why-aren-t-data-dropped-after-i-ve-altered-a-retention-policy)
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* [Why does InfluxDB fail to parse microsecond units in the configuration file?](#why-does-influxdb-fail-to-parse-microsecond-units-in-the-configuration-file)
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- [How do I include a single quote in a password?](#how-do-i-include-a-single-quote-in-a-password)
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- [How can I identify my version of InfluxDB?](#how-can-i-identify-my-version-of-influxdb)
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- [Where can I find InfluxDB logs?](#where-can-i-find-influxdb-logs)
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- [What is the relationship between shard group durations and retention policies?](#what-is-the-relationship-between-shard-group-durations-and-retention-policies)
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- [Why aren't data dropped after I've altered a retention policy?](#why-aren-t-data-dropped-after-i-ve-altered-a-retention-policy)
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- [Why does InfluxDB fail to parse microsecond units in the configuration file?](#why-does-influxdb-fail-to-parse-microsecond-units-in-the-configuration-file)
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**Command Line Interface (CLI)**
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* [How do I make InfluxDB’s CLI return human readable timestamps?](#how-do-i-make-influxdb-s-cli-return-human-readable-timestamps)
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* [How can a non-admin user `USE` a database in InfluxDB's CLI?](#how-can-a-non-admin-user-use-a-database-in-influxdb-s-cli)
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* [How do I write to a non-`DEFAULT` retention policy with InfluxDB's CLI?](#how-do-i-write-to-a-non-default-retention-policy-with-influxdb-s-cli)
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* [How do I cancel a long-running query?](#how-do-i-cancel-a-long-running-query)
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- [How do I make InfluxDB’s CLI return human readable timestamps?](#how-do-i-make-influxdb-s-cli-return-human-readable-timestamps)
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- [How can a non-admin user `USE` a database in InfluxDB's CLI?](#how-can-a-non-admin-user-use-a-database-in-influxdb-s-cli)
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- [How do I write to a non-`DEFAULT` retention policy with InfluxDB's CLI?](#how-do-i-write-to-a-non-default-retention-policy-with-influxdb-s-cli)
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- [How do I cancel a long-running query?](#how-do-i-cancel-a-long-running-query)
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**Data Types**
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* [Why can't I query Boolean field values?](#why-can-t-i-query-boolean-field-values)
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* [How does InfluxDB handle field type discrepancies across shards?](#how-does-influxdb-handle-field-type-discrepancies-across-shards)
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* [What are the minimum and maximum integers that InfluxDB can store?](#what-are-the-minimum-and-maximum-integers-that-influxdb-can-store)
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* [What are the minimum and maximum timestamps that InfluxDB can store?](#what-are-the-minimum-and-maximum-timestamps-that-influxdb-can-store)
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* [How can I tell what type of data is stored in a field?](#how-can-i-tell-what-type-of-data-is-stored-in-a-field)
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* [Can I change a field's data type?](#can-i-change-a-field-s-data-type)
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- [Why can't I query Boolean field values?](#why-can-t-i-query-boolean-field-values)
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- [How does InfluxDB handle field type discrepancies across shards?](#how-does-influxdb-handle-field-type-discrepancies-across-shards)
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- [What are the minimum and maximum integers that InfluxDB can store?](#what-are-the-minimum-and-maximum-integers-that-influxdb-can-store)
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- [What are the minimum and maximum timestamps that InfluxDB can store?](#what-are-the-minimum-and-maximum-timestamps-that-influxdb-can-store)
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- [How can I tell what type of data is stored in a field?](#how-can-i-tell-what-type-of-data-is-stored-in-a-field)
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- [Can I change a field's data type?](#can-i-change-a-field-s-data-type)
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**InfluxQL Functions**
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* [How do I perform mathematical operations within a function?](#how-do-i-perform-mathematical-operations-within-a-function)
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* [Why does my query return epoch 0 as the timestamp?](#why-does-my-query-return-epoch-0-as-the-timestamp)
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* [Which InfluxQL functions support nesting?](#which-influxql-functions-support-nesting)
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- [How do I perform mathematical operations within a function?](#how-do-i-perform-mathematical-operations-within-a-function)
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- [Why does my query return epoch 0 as the timestamp?](#why-does-my-query-return-epoch-0-as-the-timestamp)
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- [Which InfluxQL functions support nesting?](#which-influxql-functions-support-nesting)
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**Querying Data**
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* [What determines the time intervals returned by `GROUP BY time()` queries?](#what-determines-the-time-intervals-returned-by-group-by-time-queries)
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* [Why do my queries return no data or partial data?](#why-do-my-queries-return-no-data-or-partial-data)
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* [Why don't my `GROUP BY time()` queries return timestamps that occur after `now()`?](#why-don-t-my-group-by-time-queries-return-timestamps-that-occur-after-now)
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* [Can I perform mathematical operations against timestamps?](#can-i-perform-mathematical-operations-against-timestamps)
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* [Can I identify write precision from returned timestamps?](#can-i-identify-write-precision-from-returned-timestamps)
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* [When should I single quote and when should I double quote in queries?](#when-should-i-single-quote-and-when-should-i-double-quote-in-queries)
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* [Why am I missing data after creating a new `DEFAULT` retention policy?](#why-am-i-missing-data-after-creating-a-new-default-retention-policy)
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* [Why is my query with a `WHERE OR` time clause returning empty results?](#why-is-my-query-with-a-where-or-time-clause-returning-empty-results)
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* [Why does `fill(previous)` return empty results?](#why-does-fill-previous-return-empty-results)
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* [Why are my `INTO` queries missing data?](#why-are-my-into-queries-missing-data)
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* [How do I query data with an identical tag key and field key?](#how-do-i-query-data-with-an-identical-tag-key-and-field-key)
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* [How do I query data across measurements?](#how-do-i-query-data-across-measurements)
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* [Does the order of the timestamps matter?](#does-the-order-of-the-timestamps-matter)
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* [How do I `SELECT` data with a tag that has no value?](#how-do-i-select-data-with-a-tag-that-has-no-value)
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- [What determines the time intervals returned by `GROUP BY time()` queries?](#what-determines-the-time-intervals-returned-by-group-by-time-queries)
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- [Why do my queries return no data or partial data?](#why-do-my-queries-return-no-data-or-partial-data)
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- [Why don't my `GROUP BY time()` queries return timestamps that occur after `now()`?](#why-don-t-my-group-by-time-queries-return-timestamps-that-occur-after-now)
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- [Can I perform mathematical operations against timestamps?](#can-i-perform-mathematical-operations-against-timestamps)
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- [Can I identify write precision from returned timestamps?](#can-i-identify-write-precision-from-returned-timestamps)
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- [When should I single quote and when should I double quote in queries?](#when-should-i-single-quote-and-when-should-i-double-quote-in-queries)
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- [Why am I missing data after creating a new `DEFAULT` retention policy?](#why-am-i-missing-data-after-creating-a-new-default-retention-policy)
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- [Why is my query with a `WHERE OR` time clause returning empty results?](#why-is-my-query-with-a-where-or-time-clause-returning-empty-results)
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- [Why does `fill(previous)` return empty results?](#why-does-fill-previous-return-empty-results)
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- [Why are my `INTO` queries missing data?](#why-are-my-into-queries-missing-data)
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- [How do I query data with an identical tag key and field key?](#how-do-i-query-data-with-an-identical-tag-key-and-field-key)
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- [How do I query data across measurements?](#how-do-i-query-data-across-measurements)
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- [Does the order of the timestamps matter?](#does-the-order-of-the-timestamps-matter)
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- [How do I `SELECT` data with a tag that has no value?](#how-do-i-select-data-with-a-tag-that-has-no-value)
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**Series and Series Cardinality**
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* [Why does series cardinality matter?](#why-does-series-cardinality-matter)
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* [How can I remove series from the index?](#how-can-i-remove-series-from-the-index)
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- [Why does series cardinality matter?](#why-does-series-cardinality-matter)
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- [How can I remove series from the index?](#how-can-i-remove-series-from-the-index)
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**Writing Data**
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* [How do I write integer field values?](#how-do-i-write-integer-field-values)
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* [How does InfluxDB handle duplicate points?](#how-does-influxdb-handle-duplicate-points)
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* [What newline character does the HTTP API require?](#what-newline-character-does-the-http-api-require)
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* [What words and characters should I avoid when writing data to InfluxDB?](#what-words-and-characters-should-i-avoid-when-writing-data-to-influxdb)
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* [When should I single quote and when should I double quote when writing data?](#when-should-i-single-quote-and-when-should-i-double-quote-when-writing-data)
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* [Does the precision of the timestamp matter?](#does-the-precision-of-the-timestamp-matter)
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* [What are the configuration recommendations and schema guidelines for writing sparse, historical data?](#what-are-the-configuration-recommendations-and-schema-guidelines-for-writing-sparse-historical-data)
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- [How do I write integer field values?](#how-do-i-write-integer-field-values)
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- [How does InfluxDB handle duplicate points?](#how-does-influxdb-handle-duplicate-points)
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- [What newline character does the HTTP API require?](#what-newline-character-does-the-http-api-require)
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- [What words and characters should I avoid when writing data to InfluxDB?](#what-words-and-characters-should-i-avoid-when-writing-data-to-influxdb)
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- [When should I single quote and when should I double quote when writing data?](#when-should-i-single-quote-and-when-should-i-double-quote-when-writing-data)
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- [Does the precision of the timestamp matter?](#does-the-precision-of-the-timestamp-matter)
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- [What are the configuration recommendations and schema guidelines for writing sparse, historical data?](#what-are-the-configuration-recommendations-and-schema-guidelines-for-writing-sparse-historical-data)
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## How do I include a single quote in a password?
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Escape the single quote with a backslash (`\`) both when creating the password
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@ -606,9 +606,9 @@ a `GROUP BY time()` clause must provide an alternative upper bound in the
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In the following example, the first query covers data with timestamps between
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`2015-09-18T21:30:00Z` and `now()`.
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The second query covers data with timestamps between `2015-09-18T21:30:00Z` and 180 weeks from `now()`.
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```
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> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' GROUP BY time(12m) fill(none)
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```sql
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> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' GROUP BY time(12m) fill(none)
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> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' AND time <= now() + 180w GROUP BY time(12m) fill(none)
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```
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@ -617,6 +617,7 @@ Note that the `WHERE` clause must provide an alternative **upper** bound to
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override the default `now()` upper bound. The following query merely resets
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the lower bound to `now()` such that the query's time range is between
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`now()` and `now()`:
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```
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> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= now() GROUP BY time(12m) fill(none)
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>
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@ -651,7 +652,9 @@ time value precision_supplied timestamp_supplied
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1970-01-01T02:00:00Z 6 h 2
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```
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{{% warn %}} [GitHub Issue #2977](https://github.com/influxdb/influxdb/issues/2977) {{% /warn %}}
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{{% warn %}}
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[GitHub Issue #2977](https://github.com/influxdb/influxdb/issues/2977)
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{{% /warn %}}
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## When should I single quote and when should I double quote in queries?
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@ -15,68 +15,68 @@ Where applicable, it links to outstanding issues on GitHub.
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**Administration**
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* [How do I include a single quote in a password?](#how-do-i-include-a-single-quote-in-a-password)
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* [How can I identify my version of InfluxDB?](#how-can-i-identify-my-version-of-influxdb)
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* [Where can I find InfluxDB logs?](#where-can-i-find-influxdb-logs)
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* [What is the relationship between shard group durations and retention policies?](#what-is-the-relationship-between-shard-group-durations-and-retention-policies)
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* [Why aren't data dropped after I've altered a retention policy?](#why-aren-t-data-dropped-after-i-ve-altered-a-retention-policy)
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* [Why does InfluxDB fail to parse microsecond units in the configuration file?](#why-does-influxdb-fail-to-parse-microsecond-units-in-the-configuration-file)
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* [Does InfluxDB have a file system size limit?](#does-influxdb-have-a-file-system-size-limit)
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* [How do I manually trigger a compaction?](#how-do-i-manually-trigger-a-compaction)
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- [How do I include a single quote in a password?](#how-do-i-include-a-single-quote-in-a-password)
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- [How can I identify my version of InfluxDB?](#how-can-i-identify-my-version-of-influxdb)
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- [Where can I find InfluxDB logs?](#where-can-i-find-influxdb-logs)
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- [What is the relationship between shard group durations and retention policies?](#what-is-the-relationship-between-shard-group-durations-and-retention-policies)
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- [Why aren't data dropped after I've altered a retention policy?](#why-aren-t-data-dropped-after-i-ve-altered-a-retention-policy)
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- [Why does InfluxDB fail to parse microsecond units in the configuration file?](#why-does-influxdb-fail-to-parse-microsecond-units-in-the-configuration-file)
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- [Does InfluxDB have a file system size limit?](#does-influxdb-have-a-file-system-size-limit)
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- [How do I manually trigger a compaction?](#how-do-i-manually-trigger-a-compaction)
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**Command line interface (CLI)**
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* [How do I make InfluxDB’s CLI return human readable timestamps?](#how-do-i-use-the-influxdb-cli-to-return-human-readable-timestamps)
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* [How can a non-admin user `USE` a database in the InfluxDB CLI?](#how-can-a-non-admin-user-use-a-database-in-the-influxdb-cli)
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* [How do I write to a non-`DEFAULT` retention policy with the InfluxDB CLI?](#how-do-i-write-to-a-non-default-retention-policy-with-the-influxdb-cli)
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* [How do I cancel a long-running query?](#how-do-i-cancel-a-long-running-query)
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- [How do I make InfluxDB’s CLI return human readable timestamps?](#how-do-i-use-the-influxdb-cli-to-return-human-readable-timestamps)
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- [How can a non-admin user `USE` a database in the InfluxDB CLI?](#how-can-a-non-admin-user-use-a-database-in-the-influxdb-cli)
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- [How do I write to a non-`DEFAULT` retention policy with the InfluxDB CLI?](#how-do-i-write-to-a-non-default-retention-policy-with-the-influxdb-cli)
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- [How do I cancel a long-running query?](#how-do-i-cancel-a-long-running-query)
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**Data types**
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* [Why can't I query Boolean field values?](#why-can-t-i-query-boolean-field-values)
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* [How does InfluxDB handle field type discrepancies across shards?](#how-does-influxdb-handle-field-type-discrepancies-across-shards)
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* [What are the minimum and maximum integers that InfluxDB can store?](#what-are-the-minimum-and-maximum-integers-that-influxdb-can-store)
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* [What are the minimum and maximum timestamps that InfluxDB can store?](#what-are-the-minimum-and-maximum-timestamps-that-influxdb-can-store)
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* [How can I tell what type of data is stored in a field?](#how-can-i-tell-what-type-of-data-is-stored-in-a-field)
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* [Can I change a field's data type?](#can-i-change-a-field-s-data-type)
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- [Why can't I query Boolean field values?](#why-can-t-i-query-boolean-field-values)
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- [How does InfluxDB handle field type discrepancies across shards?](#how-does-influxdb-handle-field-type-discrepancies-across-shards)
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- [What are the minimum and maximum integers that InfluxDB can store?](#what-are-the-minimum-and-maximum-integers-that-influxdb-can-store)
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- [What are the minimum and maximum timestamps that InfluxDB can store?](#what-are-the-minimum-and-maximum-timestamps-that-influxdb-can-store)
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- [How can I tell what type of data is stored in a field?](#how-can-i-tell-what-type-of-data-is-stored-in-a-field)
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- [Can I change a field's data type?](#can-i-change-a-field-s-data-type)
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**InfluxQL functions**
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* [How do I perform mathematical operations within a function?](#how-do-i-perform-mathematical-operations-within-a-function)
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* [Why does my query return epoch 0 as the timestamp?](#why-does-my-query-return-epoch-0-as-the-timestamp)
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* [Which InfluxQL functions support nesting?](#which-influxql-functions-support-nesting)
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- [How do I perform mathematical operations within a function?](#how-do-i-perform-mathematical-operations-within-a-function)
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- [Why does my query return epoch 0 as the timestamp?](#why-does-my-query-return-epoch-0-as-the-timestamp)
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- [Which InfluxQL functions support nesting?](#which-influxql-functions-support-nesting)
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**Querying data**
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* [What determines the time intervals returned by `GROUP BY time()` queries?](#what-determines-the-time-intervals-returned-by-group-by-time-queries)
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* [Why do my queries return no data or partial data?](#why-do-my-queries-return-no-data-or-partial-data)
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* [Why don't my `GROUP BY time()` queries return timestamps that occur after `now()`?](#why-don-t-my-group-by-time-queries-return-timestamps-that-occur-after-now)
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* [Can I perform mathematical operations against timestamps?](#can-i-perform-mathematical-operations-against-timestamps)
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* [Can I identify write precision from returned timestamps?](#can-i-identify-write-precision-from-returned-timestamps)
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* [When should I single quote and when should I double quote in queries?](#when-should-i-single-quote-and-when-should-i-double-quote-in-queries)
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* [Why am I missing data after creating a new `DEFAULT` retention policy?](#why-am-i-missing-data-after-creating-a-new-default-retention-policy)
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* [Why is my query with a `WHERE OR` time clause returning empty results?](#why-is-my-query-with-a-where-or-time-clause-returning-empty-results)
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* [Why does `fill(previous)` return empty results?](#why-does-fill-previous-return-empty-results)
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* [Why are my `INTO` queries missing data?](#why-are-my-into-queries-missing-data)
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* [How do I query data with an identical tag key and field key?](#how-do-i-query-data-with-an-identical-tag-key-and-field-key)
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* [How do I query data across measurements?](#how-do-i-query-data-across-measurements)
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* [Does the order of the timestamps matter?](#does-the-order-of-the-timestamps-matter)
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* [How do I `SELECT` data with a tag that has no value?](#how-do-i-select-data-with-a-tag-that-has-no-value)
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- [What determines the time intervals returned by `GROUP BY time()` queries?](#what-determines-the-time-intervals-returned-by-group-by-time-queries)
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- [Why do my queries return no data or partial data?](#why-do-my-queries-return-no-data-or-partial-data)
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- [Why don't my `GROUP BY time()` queries return timestamps that occur after `now()`?](#why-don-t-my-group-by-time-queries-return-timestamps-that-occur-after-now)
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- [Can I perform mathematical operations against timestamps?](#can-i-perform-mathematical-operations-against-timestamps)
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- [Can I identify write precision from returned timestamps?](#can-i-identify-write-precision-from-returned-timestamps)
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- [When should I single quote and when should I double quote in queries?](#when-should-i-single-quote-and-when-should-i-double-quote-in-queries)
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- [Why am I missing data after creating a new `DEFAULT` retention policy?](#why-am-i-missing-data-after-creating-a-new-default-retention-policy)
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- [Why is my query with a `WHERE OR` time clause returning empty results?](#why-is-my-query-with-a-where-or-time-clause-returning-empty-results)
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- [Why does `fill(previous)` return empty results?](#why-does-fill-previous-return-empty-results)
|
||||
- [Why are my `INTO` queries missing data?](#why-are-my-into-queries-missing-data)
|
||||
- [How do I query data with an identical tag key and field key?](#how-do-i-query-data-with-an-identical-tag-key-and-field-key)
|
||||
- [How do I query data across measurements?](#how-do-i-query-data-across-measurements)
|
||||
- [Does the order of the timestamps matter?](#does-the-order-of-the-timestamps-matter)
|
||||
- [How do I `SELECT` data with a tag that has no value?](#how-do-i-select-data-with-a-tag-that-has-no-value)
|
||||
|
||||
**Series and series cardinality**
|
||||
|
||||
* [Why does series cardinality matter?](#why-does-series-cardinality-matter)
|
||||
* [How can I remove series from the index?](#how-can-i-remove-series-from-the-index)
|
||||
- [Why does series cardinality matter?](#why-does-series-cardinality-matter)
|
||||
- [How can I remove series from the index?](#how-can-i-remove-series-from-the-index)
|
||||
|
||||
**Writing data**
|
||||
|
||||
* [How do I write integer field values?](#how-do-i-write-integer-field-values)
|
||||
* [How does InfluxDB handle duplicate points?](#how-does-influxdb-handle-duplicate-points)
|
||||
* [What newline character does the InfluxDB API require?](#what-newline-character-does-the-influxdb-api-require)
|
||||
* [What words and characters should I avoid when writing data to InfluxDB?](#what-words-and-characters-should-i-avoid-when-writing-data-to-influxdb)
|
||||
* [When should I single quote and when should I double quote when writing data?](#when-should-i-single-quote-and-when-should-i-double-quote-when-writing-data)
|
||||
* [Does the precision of the timestamp matter?](#does-the-precision-of-the-timestamp-matter)
|
||||
* [What are the configuration recommendations and schema guidelines for writing sparse, historical data?](#what-are-the-configuration-recommendations-and-schema-guidelines-for-writing-sparse-historical-data)
|
||||
- [How do I write integer field values?](#how-do-i-write-integer-field-values)
|
||||
- [How does InfluxDB handle duplicate points?](#how-does-influxdb-handle-duplicate-points)
|
||||
- [What newline character does the InfluxDB API require?](#what-newline-character-does-the-influxdb-api-require)
|
||||
- [What words and characters should I avoid when writing data to InfluxDB?](#what-words-and-characters-should-i-avoid-when-writing-data-to-influxdb)
|
||||
- [When should I single quote and when should I double quote when writing data?](#when-should-i-single-quote-and-when-should-i-double-quote-when-writing-data)
|
||||
- [Does the precision of the timestamp matter?](#does-the-precision-of-the-timestamp-matter)
|
||||
- [What are the configuration recommendations and schema guidelines for writing sparse, historical data?](#what-are-the-configuration-recommendations-and-schema-guidelines-for-writing-sparse-historical-data)
|
||||
|
||||
## How do I include a single quote in a password?
|
||||
|
||||
|
|
@ -661,7 +661,7 @@ Avoid using the same name for a tag and field key. If you inadvertently add the
|
|||
fieldKey fieldType
|
||||
------ ---------
|
||||
leaves float
|
||||
```
|
||||
```
|
||||
|
||||
4. If you query the `grape` measurement, you'll see the `leaves` tag key has an appended `_1`:
|
||||
|
||||
|
|
@ -741,9 +741,9 @@ a `GROUP BY time()` clause must provide an alternative upper bound in the
|
|||
In the following example, the first query covers data with timestamps between
|
||||
`2015-09-18T21:30:00Z` and `now()`.
|
||||
The second query covers data with timestamps between `2015-09-18T21:30:00Z` and 180 weeks from `now()`.
|
||||
```
|
||||
> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' GROUP BY time(12m) fill(none)
|
||||
|
||||
```sql
|
||||
> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' GROUP BY time(12m) fill(none)
|
||||
|
||||
> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' AND time <= now() + 180w GROUP BY time(12m) fill(none)
|
||||
```
|
||||
|
|
@ -787,7 +787,9 @@ time value precision_supplied timestamp_supplied
|
|||
1970-01-01T02:00:00Z 6 h 2
|
||||
```
|
||||
|
||||
{{% warn %}} [GitHub Issue #2977](https://github.com/influxdb/influxdb/issues/2977) {{% /warn %}}
|
||||
{{% warn %}}
|
||||
[GitHub Issue #2977](https://github.com/influxdb/influxdb/issues/2977)
|
||||
{{% /warn %}}
|
||||
|
||||
## When should I single quote and when should I double quote in queries?
|
||||
|
||||
|
|
|
|||
|
|
@ -16,68 +16,68 @@ Where applicable, it links to outstanding issues on GitHub.
|
|||
|
||||
**Administration**
|
||||
|
||||
* [How do I include a single quote in a password?](#how-do-i-include-a-single-quote-in-a-password)
|
||||
* [How can I identify my version of InfluxDB?](#how-can-i-identify-my-version-of-influxdb)
|
||||
* [Where can I find InfluxDB logs?](#where-can-i-find-influxdb-logs)
|
||||
* [What is the relationship between shard group durations and retention policies?](#what-is-the-relationship-between-shard-group-durations-and-retention-policies)
|
||||
* [Why aren't data dropped after I've altered a retention policy?](#why-aren-t-data-dropped-after-i-ve-altered-a-retention-policy)
|
||||
* [Why does InfluxDB fail to parse microsecond units in the configuration file?](#why-does-influxdb-fail-to-parse-microsecond-units-in-the-configuration-file)
|
||||
* [Does InfluxDB have a file system size limit?](#does-influxdb-have-a-file-system-size-limit)
|
||||
- [How do I include a single quote in a password?](#how-do-i-include-a-single-quote-in-a-password)
|
||||
- [How can I identify my version of InfluxDB?](#how-can-i-identify-my-version-of-influxdb)
|
||||
- [Where can I find InfluxDB logs?](#where-can-i-find-influxdb-logs)
|
||||
- [What is the relationship between shard group durations and retention policies?](#what-is-the-relationship-between-shard-group-durations-and-retention-policies)
|
||||
- [Why aren't data dropped after I've altered a retention policy?](#why-aren-t-data-dropped-after-i-ve-altered-a-retention-policy)
|
||||
- [Why does InfluxDB fail to parse microsecond units in the configuration file?](#why-does-influxdb-fail-to-parse-microsecond-units-in-the-configuration-file)
|
||||
- [Does InfluxDB have a file system size limit?](#does-influxdb-have-a-file-system-size-limit)
|
||||
|
||||
|
||||
**Command line interface (CLI)**
|
||||
|
||||
* [How do I make InfluxDB’s CLI return human readable timestamps?](#how-do-i-use-the-influxdb-cli-to-return-human-readable-timestamps)
|
||||
* [How can a non-admin user `USE` a database in the InfluxDB CLI?](#how-can-a-non-admin-user-use-a-database-in-the-influxdb-cli)
|
||||
* [How do I write to a non-`DEFAULT` retention policy with the InfluxDB CLI?](#how-do-i-write-to-a-non-default-retention-policy-with-the-influxdb-cli)
|
||||
* [How do I cancel a long-running query?](#how-do-i-cancel-a-long-running-query)
|
||||
- [How do I make InfluxDB’s CLI return human readable timestamps?](#how-do-i-use-the-influxdb-cli-to-return-human-readable-timestamps)
|
||||
- [How can a non-admin user `USE` a database in the InfluxDB CLI?](#how-can-a-non-admin-user-use-a-database-in-the-influxdb-cli)
|
||||
- [How do I write to a non-`DEFAULT` retention policy with the InfluxDB CLI?](#how-do-i-write-to-a-non-default-retention-policy-with-the-influxdb-cli)
|
||||
- [How do I cancel a long-running query?](#how-do-i-cancel-a-long-running-query)
|
||||
|
||||
**Data types**
|
||||
|
||||
* [Why can't I query Boolean field values?](#why-can-t-i-query-boolean-field-values)
|
||||
* [How does InfluxDB handle field type discrepancies across shards?](#how-does-influxdb-handle-field-type-discrepancies-across-shards)
|
||||
* [What are the minimum and maximum integers that InfluxDB can store?](#what-are-the-minimum-and-maximum-integers-that-influxdb-can-store)
|
||||
* [What are the minimum and maximum timestamps that InfluxDB can store?](#what-are-the-minimum-and-maximum-timestamps-that-influxdb-can-store)
|
||||
* [How can I tell what type of data is stored in a field?](#how-can-i-tell-what-type-of-data-is-stored-in-a-field)
|
||||
* [Can I change a field's data type?](#can-i-change-a-field-s-data-type)
|
||||
- [Why can't I query Boolean field values?](#why-can-t-i-query-boolean-field-values)
|
||||
- [How does InfluxDB handle field type discrepancies across shards?](#how-does-influxdb-handle-field-type-discrepancies-across-shards)
|
||||
- [What are the minimum and maximum integers that InfluxDB can store?](#what-are-the-minimum-and-maximum-integers-that-influxdb-can-store)
|
||||
- [What are the minimum and maximum timestamps that InfluxDB can store?](#what-are-the-minimum-and-maximum-timestamps-that-influxdb-can-store)
|
||||
- [How can I tell what type of data is stored in a field?](#how-can-i-tell-what-type-of-data-is-stored-in-a-field)
|
||||
- [Can I change a field's data type?](#can-i-change-a-field-s-data-type)
|
||||
|
||||
**InfluxQL functions**
|
||||
|
||||
* [How do I perform mathematical operations within a function?](#how-do-i-perform-mathematical-operations-within-a-function)
|
||||
* [Why does my query return epoch 0 as the timestamp?](#why-does-my-query-return-epoch-0-as-the-timestamp)
|
||||
* [Which InfluxQL functions support nesting?](#which-influxql-functions-support-nesting)
|
||||
- [How do I perform mathematical operations within a function?](#how-do-i-perform-mathematical-operations-within-a-function)
|
||||
- [Why does my query return epoch 0 as the timestamp?](#why-does-my-query-return-epoch-0-as-the-timestamp)
|
||||
- [Which InfluxQL functions support nesting?](#which-influxql-functions-support-nesting)
|
||||
|
||||
**Querying data**
|
||||
|
||||
* [What determines the time intervals returned by `GROUP BY time()` queries?](#what-determines-the-time-intervals-returned-by-group-by-time-queries)
|
||||
* [Why do my queries return no data or partial data?](#why-do-my-queries-return-no-data-or-partial-data)
|
||||
* [Why don't my `GROUP BY time()` queries return timestamps that occur after `now()`?](#why-don-t-my-group-by-time-queries-return-timestamps-that-occur-after-now)
|
||||
* [Can I perform mathematical operations against timestamps?](#can-i-perform-mathematical-operations-against-timestamps)
|
||||
* [Can I identify write precision from returned timestamps?](#can-i-identify-write-precision-from-returned-timestamps)
|
||||
* [When should I single quote and when should I double quote in queries?](#when-should-i-single-quote-and-when-should-i-double-quote-in-queries)
|
||||
* [Why am I missing data after creating a new `DEFAULT` retention policy?](#why-am-i-missing-data-after-creating-a-new-default-retention-policy)
|
||||
* [Why is my query with a `WHERE OR` time clause returning empty results?](#why-is-my-query-with-a-where-or-time-clause-returning-empty-results)
|
||||
* [Why does `fill(previous)` return empty results?](#why-does-fill-previous-return-empty-results)
|
||||
* [Why are my `INTO` queries missing data?](#why-are-my-into-queries-missing-data)
|
||||
* [How do I query data with an identical tag key and field key?](#how-do-i-query-data-with-an-identical-tag-key-and-field-key)
|
||||
* [How do I query data across measurements?](#how-do-i-query-data-across-measurements)
|
||||
* [Does the order of the timestamps matter?](#does-the-order-of-the-timestamps-matter)
|
||||
* [How do I `SELECT` data with a tag that has no value?](#how-do-i-select-data-with-a-tag-that-has-no-value)
|
||||
- [What determines the time intervals returned by `GROUP BY time()` queries?](#what-determines-the-time-intervals-returned-by-group-by-time-queries)
|
||||
- [Why do my queries return no data or partial data?](#why-do-my-queries-return-no-data-or-partial-data)
|
||||
- [Why don't my `GROUP BY time()` queries return timestamps that occur after `now()`?](#why-don-t-my-group-by-time-queries-return-timestamps-that-occur-after-now)
|
||||
- [Can I perform mathematical operations against timestamps?](#can-i-perform-mathematical-operations-against-timestamps)
|
||||
- [Can I identify write precision from returned timestamps?](#can-i-identify-write-precision-from-returned-timestamps)
|
||||
- [When should I single quote and when should I double quote in queries?](#when-should-i-single-quote-and-when-should-i-double-quote-in-queries)
|
||||
- [Why am I missing data after creating a new `DEFAULT` retention policy?](#why-am-i-missing-data-after-creating-a-new-default-retention-policy)
|
||||
- [Why is my query with a `WHERE OR` time clause returning empty results?](#why-is-my-query-with-a-where-or-time-clause-returning-empty-results)
|
||||
- [Why does `fill(previous)` return empty results?](#why-does-fill-previous-return-empty-results)
|
||||
- [Why are my `INTO` queries missing data?](#why-are-my-into-queries-missing-data)
|
||||
- [How do I query data with an identical tag key and field key?](#how-do-i-query-data-with-an-identical-tag-key-and-field-key)
|
||||
- [How do I query data across measurements?](#how-do-i-query-data-across-measurements)
|
||||
- [Does the order of the timestamps matter?](#does-the-order-of-the-timestamps-matter)
|
||||
- [How do I `SELECT` data with a tag that has no value?](#how-do-i-select-data-with-a-tag-that-has-no-value)
|
||||
|
||||
**Series and series cardinality**
|
||||
|
||||
* [Why does series cardinality matter?](#why-does-series-cardinality-matter)
|
||||
* [How can I remove series from the index?](#how-can-i-remove-series-from-the-index)
|
||||
- [Why does series cardinality matter?](#why-does-series-cardinality-matter)
|
||||
- [How can I remove series from the index?](#how-can-i-remove-series-from-the-index)
|
||||
|
||||
**Writing data**
|
||||
|
||||
* [How do I write integer field values?](#how-do-i-write-integer-field-values)
|
||||
* [How does InfluxDB handle duplicate points?](#how-does-influxdb-handle-duplicate-points)
|
||||
* [What newline character does the InfluxDB API require?](#what-newline-character-does-the-influxdb-api-require)
|
||||
* [What words and characters should I avoid when writing data to InfluxDB?](#what-words-and-characters-should-i-avoid-when-writing-data-to-influxdb)
|
||||
* [When should I single quote and when should I double quote when writing data?](#when-should-i-single-quote-and-when-should-i-double-quote-when-writing-data)
|
||||
* [Does the precision of the timestamp matter?](#does-the-precision-of-the-timestamp-matter)
|
||||
* [What are the configuration recommendations and schema guidelines for writing sparse, historical data?](#what-are-the-configuration-recommendations-and-schema-guidelines-for-writing-sparse-historical-data)
|
||||
- [How do I write integer field values?](#how-do-i-write-integer-field-values)
|
||||
- [How does InfluxDB handle duplicate points?](#how-does-influxdb-handle-duplicate-points)
|
||||
- [What newline character does the InfluxDB API require?](#what-newline-character-does-the-influxdb-api-require)
|
||||
- [What words and characters should I avoid when writing data to InfluxDB?](#what-words-and-characters-should-i-avoid-when-writing-data-to-influxdb)
|
||||
- [When should I single quote and when should I double quote when writing data?](#when-should-i-single-quote-and-when-should-i-double-quote-when-writing-data)
|
||||
- [Does the precision of the timestamp matter?](#does-the-precision-of-the-timestamp-matter)
|
||||
- [What are the configuration recommendations and schema guidelines for writing sparse, historical data?](#what-are-the-configuration-recommendations-and-schema-guidelines-for-writing-sparse-historical-data)
|
||||
|
||||
## How do I include a single quote in a password?
|
||||
|
||||
|
|
@ -653,7 +653,7 @@ Avoid using the same name for a tag and field key. If you inadvertently add the
|
|||
fieldKey fieldType
|
||||
------ ---------
|
||||
leaves float
|
||||
```
|
||||
```
|
||||
|
||||
4. If you query the `grape` measurement, you'll see the `leaves` tag key has an appended `_1`:
|
||||
|
||||
|
|
@ -733,9 +733,9 @@ a `GROUP BY time()` clause must provide an alternative upper bound in the
|
|||
In the following example, the first query covers data with timestamps between
|
||||
`2015-09-18T21:30:00Z` and `now()`.
|
||||
The second query covers data with timestamps between `2015-09-18T21:30:00Z` and 180 weeks from `now()`.
|
||||
```
|
||||
> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' GROUP BY time(12m) fill(none)
|
||||
|
||||
```sql
|
||||
> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' GROUP BY time(12m) fill(none)
|
||||
|
||||
> SELECT MEAN("boards") FROM "hillvalley" WHERE time >= '2015-09-18T21:30:00Z' AND time <= now() + 180w GROUP BY time(12m) fill(none)
|
||||
```
|
||||
|
|
@ -779,7 +779,9 @@ time value precision_supplied timestamp_supplied
|
|||
1970-01-01T02:00:00Z 6 h 2
|
||||
```
|
||||
|
||||
{{% warn %}} [GitHub Issue #2977](https://github.com/influxdb/influxdb/issues/2977) {{% /warn %}}
|
||||
{{% warn %}}
|
||||
[GitHub Issue #2977](https://github.com/influxdb/influxdb/issues/2977)
|
||||
{{% /warn %}}
|
||||
|
||||
## When should I single quote and when should I double quote in queries?
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue