April 2008
Intermediate to advanced
566 pages
21h 55m
English
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C API Datatypes
Here is a list of C API data types from the mysql.h header file:
MYSQLA database handle structure created by
mysql_init()and released withmysql_close().MYSQL_RESA structure for a results set from an SQL query. This structure is used by fetch functions and is released with
mysql_free_result().MYSQL_ROWA structure for holding a row of data from a results set. The data is retrieved from this structure by the
mysql_fetch_row()function.MYSQL_FIELDA structure for holding an array of information about a field of a results set. The array may be set with the
mysql_fetch_field()function. The elements includename,table, anddeffor the default value.MYSQL_FIELD_OFFSETUsed for recording a pointer location for a results set. The offset value can be retrieved by the
mysql_row_tell()function and deployed withmysql_row_seek().my_ulonglongA variable type for storing the number of rows for functions such as
mysql_affected_rows(),mysql_num_rows(), andmysql_insert_id(). To print the value of a variable using this type, copy the value to another variable that uses the unsigned long type.
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