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Mysql c api error handling

For example, if you have BLOB values that contain up to 16MB of data, you must have a communication buffer limit of at least. The following list summarizes the functions available in the C API. my_ init( ) : Initialize global variables, and thread handler in thread- safe programs. mysql_ error( ) : Returns the error message for the most recently invoked MySQL function. The mysql C library does not throw any excptions; it merely, like most other C libraries, sets up error info in a common place ( like errno ) and returns a status. Its up to your client code to check the return and throw voked MySQL function. Initialize a connection handler by calling mysql_ init( ) and connect to the server by calling mysql_ real_ connect( ). For the connection specified by mysql, mysql_ error( ) returns a null- terminated string containing the error message for the most recently invoked API function that failed. If a function did not fail, the return value of mysql_ error( ) may be the. When a function returns an error, the Errors subsection of the function description lists the possible types of errors.

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    Handling mysql error

    You can find out which of these occurred by calling mysql_ errno( ). A string representation of the error may be obtained by. If a function did not fail, the return value of mysql_ error( ). Processing these results involves a different approach than for the single- statement case: After handling the result from. Otherwise, such procedures result in an error ErrorA000) : PROCEDURE proc_ name can' t return a result set in. For the connection specified by mysql, mysql_ errno( ) returns the error code for the most recently invoked API function that can succeed or fail. Errors also are listed at Appendix B, Errors, Error Codes, and Common Problems.