78 lines
2.2 KiB
Markdown
78 lines
2.2 KiB
Markdown
---
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title: Write to MariaDB
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list_title: MariaDB
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description: >
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Use [`sql.to()`](/flux/v0/stdlib/sql/to/) with the `mysql` driver to write
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data to MariaDB.
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menu:
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flux_v0:
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name: MariaDB
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parent: write-to-sql
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identifier: write-mariadb
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weight: 101
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related:
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- /flux/v0/stdlib/sql/to/
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list_code_example: |
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```js
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import "sql"
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data
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|> sql.to(
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driverName: "mysql",
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dataSourceName: "user:password@tcp(localhost:3306)/db",
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table: "example_table",
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)
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```
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---
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To write data to [MariaDB](https://mariadb.org/) with Flux:
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1. Import the [`sql` package](/flux/v0/stdlib/sql/).
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2. Pipe-forward data into [`sql.to()`](/flux/v0/stdlib/sql/to/) and provide
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the following parameters:
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- **driverName**: mysql
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- **dataSourceName**: _See [data source name](#mariadb-data-source-name)_
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- **table**: Table to write to
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- **batchSize**: Number of parameters or columns that can be queued within
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each call to `Exec` (default is `10000`)
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```js
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import "sql"
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data
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|> sql.to(
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driverName: "mysql",
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dataSourceName: "user:password@tcp(localhost:3306)/db",
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query: "SELECT * FROM example_table",
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)
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```
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---
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## MariaDB data source name
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The `mysql` driver uses the following data source name (DSN) syntax (also known as a **connection string**):
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```
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username:password@tcp(localhost:3306)/dbname?param=value
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```
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## Flux to MariaDB data type conversion
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`sql.to()` converts Flux data types to MariaDB data types.
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| Flux data type | MariaDB data type |
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| :-------------------------------------------- | :---------------- |
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| [float](/flux/v0/data-types/basic/float/) | FLOAT |
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| [int](/flux/v0/data-types/basic/int/) | BIGINT |
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| [uint](/flux/v0/data-types/basic/uint/) | BIGINT |
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| [string](/flux/v0/data-types/basic/string/) | TEXT(16383) |
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| [bool](/flux/v0/data-types/basic/bool/) | BOOL (TINYINT) |
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| [time](/flux/v0/data-types/basic/time/) | DATETIME |
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{{% note %}}
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#### MariaDB BOOL types
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`BOOL` is a synonym supplied by MariaDB for convenience.
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MariaDB stores `BOOL` values as `TINYINT` types so looking at the schema shows the
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column type as `TINYINT`.
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{{% /note %}}
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