sql

MySQL duplicate key on insert

ERROR.*Duplicate entry '(.*)' for key '(.*)'

Fixes

1.Use INSERT ... ON DUPLICATE KEY UPDATE to handle upserts
2.Use INSERT IGNORE to silently skip duplicates (data is discarded)
3.Check the unique index columns and deduplicate input data before inserting

mysqlunique-keyduplicate

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