MySQL client error 2032 (CR_DATA_TRUNCATED) occurs when the client library detects that incoming or outgoing data has been silently cut off, leading to loss of information during transmission.
MySQL Error 2032: CR_DATA_TRUNCATED means the client lost part of the data being sent or received. Verify column sizes, enable strict SQL modes, and resend the query with properly sized values to resolve the issue.
Data truncated
ERROR 2032 (CR_DATA_TRUNCATED): Data truncated<\/code>. The MySQL client library raises it when the payload exchanged between client and server is shorter than expected. The mismatch may happen while fetching result rows or sending parameter values, causing silent data loss if not caught.<\/p>The problem is critical because truncated data produces incorrect analytics, broken strings, or invalid numeric values.
Fixing the root cause preserves data integrity and application stability.<\/p>
What Causes This Error?<\/h3>Column width overflow is the most common trigger.
When an INSERT or UPDATE passes a value longer than the defined column length, the server may silently chop the excess and the client flags truncation.<\/p>
Mismatched character sets also lead to byte-length miscalculations, so the client receives fewer bytes than it expects.<\/p>
Improper buffer allocation in application code can cut result sets prematurely, especially in C libraries that rely on fixed-size buffers.<\/p>
Then adjust column definitions or CAST() data before insertion. Finally, validate application buffers to match the expected field sizes.<\/p>
Scenario 2 – UTF8MB4 text stored in a UTF8 column. Solution: convert the column and connection to UTF8MB4 to keep multibyte characters intact.<\/p>
STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_ZERO_DATE<\/code>. Validate data length in application code and unit tests.Use prepared statements with explicit parameter length checks.<\/p>
Related Errors and Solutions<\/h3>Server-side truncation may instead surface as warning 1265: Data truncated for column. Connectivity hiccups can throw CR_SERVER_LOST. Each has distinct fixes but overlaps in preventive measures like strict mode and schema validation.<\/p>.
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