tds_dynamic Struct Reference

Holds information for a dynamic (also called prepared) query. More...

#include <tds.h>

Collaboration diagram for tds_dynamic:

Public Attributes
bool	defer_close
	true if dynamic was marker to be closed when connection is idle
bool	emulated
	this dynamic query cannot be prepared so libTDS have to construct a simple query.
char	id [30]
	id of dynamic.
struct tds_dynamic *	next
	next in linked list, keep first
TDS_INT	num_id
	numeric id for mssql7+
TDSPARAMINFO *	params
	query parameters.
char *	query
	saved query, we need to know original query if prepare is impossible
TDS_INT	ref_count
	reference counter so client can retain safely a pointer
TDSPARAMINFO *	res_info
	query results

Detailed Description

Holds information for a dynamic (also called prepared) query.

Member Data Documentation

emulated

bool tds_dynamic::emulated

this dynamic query cannot be prepared so libTDS have to construct a simple query.

This can happen for instance is tds protocol doesn't support dynamics or trying to prepare query under Sybase that have BLOBs as parameters.

id

char tds_dynamic::id[30]

id of dynamic.

Usually this id correspond to server one but if not specified is generated automatically by libTDS

params

TDSPARAMINFO* tds_dynamic::params

query parameters.

Mostly used executing query however is a good idea to prepare query again if parameter type change in an incompatible way (ie different types or larger size). Is also better to prepare a query knowing parameter types earlier.

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The documentation for this struct was generated from the following file:

• include/freetds/tds.h