1764
MariaDBERRORNotableQuery SyntaxHIGH confidence
Too many fields in SELECT
Production Risk
Low — query rejected.
What this means
A SELECT statement or INSERT ... SELECT contains more columns than the maximum allowed (4096).
Why it happens
- 1Generating a SELECT with an extremely large number of expressions.
- 2A query builder producing thousands of columns in a single SELECT.
How to reproduce
trigger — this will error
trigger — this will error
-- SELECT col1, col2, ..., col5000 FROM tbl; -- exceeds 4096 column limit
expected output
ERROR 1764 (HY000): Too many fields in SELECT.
Fix
Reduce the number of selected columns or split the query
Reduce the number of selected columns or split the query
SELECT col1, col2, ..., col4096 FROM tbl; -- stay within the 4096 limit
Why this works
Keeps the query within MySQL column expression limits.
What not to do
✕
Sources
Official documentation ↗
MySQL 8.0 — 1764 ER_TOO_MANY_FIELDS
Content generated with AI assistance and reviewed for accuracy. Found an error? hello@errcodes.dev