1065
MySQLERRORCommonQueryHIGH confidence
Query was empty
Production Risk
Low — no query is executed; no data is affected.
What this means
ER_EMPTY_QUERY (1065, SQLSTATE 42000) is raised when MySQL receives a statement that contains no actual SQL — typically just whitespace or semicolons.
Why it happens
- 1Application sends an empty string as a query
- 2SQL script has trailing semicolons that produce empty statements
- 3Template rendering produces an empty query under certain conditions
How to reproduce
trigger — this will error
trigger — this will error
;
expected output
ERROR 1065 (42000): Query was empty
Fix
Validate query strings before sending to MySQL
WHEN Always — guard against empty queries in application code.
Validate query strings before sending to MySQL
-- Application-level guard (pseudocode): -- if query.strip(): -- cursor.execute(query)
Why this works
Stripping whitespace and checking for an empty string before executing prevents 1065.
What not to do
✕ Ignore 1065 in error handling
An empty query often indicates a code bug (e.g., uninitialized SQL variable); it should be logged and investigated.
Sources
Official documentation ↗
MySQL 8.0 — 1065 ER_EMPTY_QUERY
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