文档解释
Error number: MY-013189; Symbol: ER_SYS_VAR_NOT_FOUND; SQLSTATE: HY000
Message: Variable name ‘%s’ not found.
Error MY-013189 ( ER_SYS_VAR_NOT_FOUND) is thrown by MySQL when a query is performed which references a system variable that does not exist.
Error Message:
SQLSTATE[HY000]: General error: 13183 Variable ‘%s’ not found.
Explanations:
Error MY-013189 occurs when a variable is referenced that does not exist. This might happen when the variable is misspelled, or not declared.
Common cases:
When a system variable is defined, or someone is trying to change the value of an existing system variable, they might mistype the variable name.
When a system variable is referenced but is not defined, it leads to this error message.
Solution:
To resolve this issue, make sure to use the correct spelling and case of the system variable name in the query. When defining a system variable, make sure that the variable is known in the scope of the session.
Check for typos in the variable name and make sure the variable is actually defined.
