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mariadb_dyncol_unpack(3) MariaDB Connector/C mariadb_dyncol_unpack(3)
Name
mariadb_dyncol_unpack - extracts keys and values of all columns
Synopsis
#include <mariadb_dyncol.h>
enum enum_dyncol_func_result
mariadb_dyncol_unpack(DYNAMIC_COLUMN *str,
uint *column_count,
MYSQL_LEX_STRING **column_keys,
DYNAMIC_COLUMN_VALUE **values);
Description
The mariadb_dyncol_unpack() function extracts all keys and values of a
dynamic column.
Parameter
• str - Pointer to a DYNAMIC_COLUMN structure
• column count - Pointer to an unsigned integer which will receive the
number of columns
• column_keys - Pointer of an array of MYSQL_LEX_STRING structures,
which will contain the column keys
• values - Pointer of an array of DYNAMIC_COLUMN_VALUE structures,
which will contain the values.
Return value
Returns ER_DYNCOL_OK on success, otherwise an error.
Notes
• The column_keys and values arrays will be allocated by mariadb_dyn-
col_unpack() and must be freed by application.
See also
• mariadb_dyncol_get(3)
• mariadb_dyncol_list(3)
Version 3.4 mariadb_dyncol_unpack(3)
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