(mysql.info) mysql-stmt-field-count

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 22.2.7.13 `mysql_stmt_field_count()'
 ....................................
 
 `unsigned int mysql_stmt_field_count(MYSQL_STMT *stmt)'
 
 *Description*
 
 Returns the number of columns for the most recent statement for the
 statement handler. This value is zero for statements such as `INSERT'
 or `DELETE' that do not produce result sets.
 
 `mysql_stmt_field_count()' can be called after you have prepared a
 statement by invoking `mysql_stmt_prepare()'.
 
 *Return Values*
 
 An unsigned integer representing the number of columns in a result set.
 
 *Errors*
 
 None.
 

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(mysql.info) mysql-stmt-fetch-column

(mysql.info) c-api-prepared-statement-functions

(mysql.info) mysql-stmt-free-result