ERROR: column "x" is of type integer but expression is of type text — HINT: You will need to rewrite or cast the expression.
An INSERT/UPDATE supplies a value of a different type than the column, and PostgreSQL won’t cast implicitly.
Exact message you may see
but expression is of type
Seen on:
PostgreSQL
Meaning
Parameters bound as text, jsonb vs json, or enum columns receiving text. Explicit casts fix it.
Common causes
- Parameters sent as strings
- Enum column receiving text without cast
- json vs jsonb mismatch
⚡ Quick fix
- Cast: $1::int / $1::my_enum
- Fix the driver/ORM type mapping
Detailed fix by platform
PostgreSQL
UPDATE orders SET status = $1::order_status WHERE id = $2;
How to diagnose
- Types — Column type vs expression type
- Recent change — Did it start after a deploy, upgrade, or configuration change? Compare with the last working version.
🔧 Still not fixed?
Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:
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Other ways to find it
Where this error sits
Origin: Data. Errors that are often confused with or caused by this one (click to open):
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Last updated 14 Oct 2026