MySQL 5.7 C API Developer Guide

6.4.9 mysql_stmt_error()

const char *
mysql_stmt_error(MYSQL_STMT *stmt)


For the statement specified by stmt, mysql_stmt_error() returns a null-terminated string containing the error message for the most recently invoked statement API function that can succeed or fail. An empty string ("") is returned if no error occurred. Either of these two tests can be used to check for an error:

  // an error occurred

if (mysql_stmt_error(stmt)[0])
  // an error occurred

If the failed statement API function was mysql_stmt_close(), do not call mysql_stmt_error() to obtain error information because mysql_stmt_close() makes the statement handler invalid. Call mysql_error() instead.

The language of the client error messages may be changed by recompiling the MySQL client library. You can choose error messages in several different languages.

Return Values

A character string that describes the error. An empty string if no error occurred.