54023ERRORTier 2 — Caution✅ HIGH confidence

too many arguments

Category: Program Limit ExceededVersions: All Postgres versions

What this means

SQLSTATE 54023 is raised when a function call passes more arguments than Postgres supports. The maximum number of function arguments is 100.

Why it happens

1A function call with more than 100 arguments
2A generated SQL function call with too many parameters

How to reproduce

Function call with more than 100 arguments.

trigger — this will ERROR

ERROR: functions cannot have more than 100 arguments

Fix 1: Refactor the function to accept arrays or a composite type

When many values must be passed to a function.

fix

-- Instead of f(a1, a2, ..., a100), use:
CREATE FUNCTION process_batch(items TEXT[]) RETURNS VOID AS $
-- process items
$ LANGUAGE plpgsql;

SELECT process_batch(ARRAY['a','b','c',...]);

Why this works

Passing an array or a composite type allows an arbitrary number of values to be passed as a single argument, bypassing the 100-argument limit.

Sources

📚 Official docs: https://www.postgresql.org/docs/current/errcodes-appendix.html

🔧 Source ref: Class 54 — Program Limit Exceeded

Confidence assessment

✅ HIGH confidence

Standard SQLSTATE. The 100-argument limit is a documented Postgres constant.