1660
MariaDBERRORNotableInnoDBHIGH confidence
InnoDB full-text index cannot be created on temporary tables
Production Risk
Low — DDL is rejected; no data loss.
What this means
Attempting to create a full-text index on a temporary InnoDB table is not supported.
Why it happens
- 1A FULLTEXT index was specified on a CREATE TEMPORARY TABLE statement.
How to reproduce
trigger — this will error
trigger — this will error
CREATE TEMPORARY TABLE tmp (id INT, body TEXT, FULLTEXT(body)) ENGINE=InnoDB;
expected output
ERROR 1660 (HY000): Cannot create FULLTEXT index on temporary InnoDB table.
Fix 1
Use a permanent table for full-text search
Use a permanent table for full-text search
CREATE TABLE search_tmp (id INT, body TEXT, FULLTEXT(body)) ENGINE=InnoDB;
Why this works
Full-text indexes on InnoDB require permanent tables.
Fix 2
Use MyISAM for temporary full-text search
Use MyISAM for temporary full-text search
CREATE TEMPORARY TABLE tmp (id INT, body TEXT, FULLTEXT(body)) ENGINE=MyISAM;
Why this works
MyISAM supports full-text indexes on temporary tables.
Sources
Official documentation ↗
MySQL 8.0 — 1660 ER_INNODB_NO_FT_TEMP_TABLE
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