mirror of https://github.com/apache/druid.git
256160aba6
* MSQ: Validate that strings and string arrays are not mixed. When multi-value strings and string arrays coexist in the same column, it causes problems with "classic MVD" style queries such as: select * from wikipedia -- fails at runtime select count(*) from wikipedia where flags = 'B' -- fails at planning time select flags, count(*) from wikipedia group by 1 -- fails at runtime To avoid these problems, this patch adds type verification for INSERT and REPLACE. It is targeted: the only type changes that are blocked are string-to-array and array-to-string. There is also a way to exclude certain columns from the type checks, if the user really knows what they're doing. * Fixes. * Tests and docs and error messages. * More docs. * Adjustments. * Adjust message. * Fix tests. * Fix test in DV mode. |
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