mysql详细解释错误ERROR 1064 42000 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near DECLARE value INT; SELECT value INTO

This error message indicates that there is a syntax error in the SQL statement that was executed. The error occurred at or near the word "DECLARE", which suggests that the error may be related to the use of a variable or a stored procedure.

The error message also suggests that the user should consult the MySQL server manual for the correct syntax to use. This means that the user should review the documentation for their version of MySQL to identify the correct syntax for the SQL statement they are trying to execute.

In this particular case, the error may be related to the use of a DECLARE statement in combination with a SELECT statement. The user should review the MySQL documentation for these statements to ensure that they are being used correctly and in the appropriate context.