sql
MySQL foreign key constraint violation on insert/update
Cannot add or update a child row.*foreign key constraint fails
Fixes
- 1.Ensure the referenced parent row exists before inserting the child row
- 2.Check that the foreign key column values match the parent table's primary/unique key values exactly (type and value)
- 3.Temporarily disable FK checks for bulk loads: SET FOREIGN_KEY_CHECKS=0 (re-enable after)
mysqlforeign-keyconstraint
Related Errors
sql3 fixes
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
sql3 fixes
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 ->
sql3 fixes
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