Marco Neumann 09e611deb7 refactor: lift query schema generation up to caller ... Do no longer scan chunks during query planning to determine the schema (except for the lifetime jobs where we have a good reason to do so). Instead pass the schema down to from whoever is triggering the query. For real SQL queries, we then just use the the table-wide schemas introduced in #1913. Apart from avoiding schema merges we now also don't crash any longer when no chunks are left in the table (aka columns are present but all rows are gone). Fixes #1768. Fixes #1884.		2021-07-09 09:24:21 +02:00
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in	refactor: lift query schema generation up to caller	2021-07-09 09:24:21 +02:00
out	test: ensure that query tests don't rebuild all the time	2021-07-05 15:30:10 +02:00