sql: fix TestRandomSyntaxSchemaChangeDatabase flake #128939
Merged
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Previously, TestRandomSyntaxSchemaChangeDatabase could flake because of contention from multiple Go routines executing SQL against the same database. Some of these schema changes were long-running, making this test unreliable. To address this, this patch creates multiple databases, so that every two connections will share the same database.
Fixes: #128287
Release note: None