sql

Sequential scan in EXPLAIN plan (missing index)

Seq Scan on.*cost=.*rows=

Fixes

1.Add an index on the filtered/joined column
2.Check if the table statistics are stale: ANALYZE table_name
3.Verify the WHERE clause isn't wrapping the column in a function
4.Consider a partial index if only a subset of rows match

explainindexperformance

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