MySQL raises error 3047 (ER_STD_INVALID_ARGUMENT) when a built in function receives an argument of an invalid type, length, or value.
MySQL error 3047 ER_STD_INVALID_ARGUMENT occurs when a built in function receives an invalid argument. Check the data type, length, and value of each function argument, cast or convert them correctly, and rerun the statement to resolve the error.
ER_STD_INVALID_ARGUMENT
Error 3047 appears when MySQL detects that a built in SQL or stored function has been called with an argument it cannot process. The server halts execution and returns the message Invalid argument error along with the offending argument and function name.
The error was introduced in MySQL 5.7.5 to provide clearer diagnostics compared with earlier generic HY000 messages. Fixing it quickly is crucial because the entire statement fails, blocking inserts, updates, or reports that rely on the affected function call.
The most common trigger is passing a value of the wrong data type. For example, supplying a string to a numeric function or a negative length to SUBSTRING triggers error 3047.
Length-mismatch and range-overflow issues also raise this error. DATETIME functions reject dates outside 1000-01-01 to 9999-12-31, and math functions reject values that exceed supported precision.
Identify the specific argument listed in the error payload. Verify its type, range, and length. Cast, convert, or sanitize the value before calling the function.
Test the corrected statement in a safe environment like Galaxy’s query runner, then deploy the change to production.
String functions often fail when length arguments are zero or negative. Ensure the length parameter is positive.
Datetime functions fail on out-of-range dates. Use DATE_FORMAT or CAST to coerce input to a valid date.
Always validate user input at the application layer. Use CHECK constraints on tables to block out-of-range values.
Enable STRICT mode and run static analysis in Galaxy to catch invalid arguments during code review.
Error 1366 (HY000) incorrect string value arises from improper character sets. Validate encoding to avoid both errors.
Error 1292 (Truncated Wrong Value) appears when data type conversion fails. Proper casting prevents error 3047 and 1292 alike.
Passing a string where a numeric function expects an INT or DECIMAL.
Supplying dates outside the valid MySQL DATETIME range.
Calling SUBSTRING or RIGHT with a negative length value.
Providing NULL to a NOT NULL parameter when strict SQL mode is active.
Occurs when a conversion operation loses data. Similar fix: validate and cast inputs.
Raised by character set mismatches. Check collation and encoding settings.
Triggered when numeric data exceeds column limits. Adjust schema or sanitize input.
No, the server is working as intended. The error points to invalid input, not an engine defect.
Disabling is not recommended. Instead validate inputs or switch off strict mode only for legacy workloads.
Newer versions still enforce argument validation. Fix the query logic rather than expecting an upgrade to hide the error.
Galaxy highlights type mismatches in real time and offers AI suggestions to cast or sanitize values before execution, reducing runtime failures.
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