sql

MySQL cannot make primary key invisible

MySQL.*Error 3171.*Cannot create.*invisible.*index.*primary key

Fixes

1.Primary keys cannot be invisible - use a different index
2.Create a secondary unique index and make it invisible for testing
3.Use ALTER TABLE ... ALTER INDEX idx_name INVISIBLE for non-PK indexes

mysqlinvisible-indexes

Related Errors

PostgreSQL JSONB extracting from scalar

ERROR:.*cannot extract elements from a scalar.*jsonb

•Check value is an object/array before extraction: jsonb_typeof(col) = 'object'
•Use COALESCE with '{}' for null/scalar values

PostgreSQL JSONB operator type mismatch

ERROR:.*operator does not exist.*jsonb @> text

•Cast the right operand to jsonb: col @> '{"key": "val"}'::jsonb
•Use ->> operator for text extraction instead of ->

PostgreSQL full-text search config not found

ERROR:.*text search configuration.*does not exist

•Create the text search configuration or use a built-in one (english, simple)
•Install the pg_catalog extension if using a custom configuration