tds_column Struct Reference

Metadata about columns in regular and compute rows. More...

#include <tds.h>

List of all members.

Public Attributes
BCPCOLDATA *	bcp_column_data
TDS_INT	bcp_prefix_len
	The length, in bytes, of any length prefix this column may have.
TDS_INT	bcp_term_len
TDS_CHAR *	bcp_terminator
TDSICONV *	char_conv
	refers to previously allocated iconv information
TDS_SMALLINT	column_bindfmt
TDS_UINT	column_bindlen
TDS_SMALLINT	column_bindtype
TDS_UCHAR	column_collation [5]
TDS_INT	column_cur_size
	size written in variable (ie: char, text, binary).
unsigned char *	column_data
void(*	column_data_free )(struct tds_column *column)
TDS_INT	column_flags
unsigned int	column_hidden:1
unsigned int	column_identity:1
unsigned int	column_key:1
TDS_INT *	column_lenbind
TDS_CHAR	column_name [TDS_SYSNAME_SIZE]
TDS_SMALLINT	column_namelen
	length of column name
unsigned int	column_nullable:1
TDS_SMALLINT *	column_nullbind
TDS_SMALLINT	column_operand
TDS_TINYINT	column_operator
unsigned int	column_output:1
TDS_TINYINT	column_prec
	precision for decimal/numeric
TDS_TINYINT	column_scale
	scale for decimal/numeric
TDS_INT	column_size
	maximun size of data.
TDS_INT	column_text_sqlgetdatapos
TDS_CHAR	column_text_sqlputdatainfo
TDS_INT	column_textpos
unsigned int	column_timestamp:1
TDS_SMALLINT	column_type
	This type can be different from wire type because conversion (e.g.
TDS_INT	column_usertype
TDS_CHAR *	column_varaddr
TDS_TINYINT	column_varint_size
	size of length when reading from wire (0, 1, 2 or 4)
unsigned int	column_writeable:1
struct {
TDS_INT   column_size
TDS_SMALLINT   column_type
	type of data, saved from wire
}	on_server
char *	table_column_name
TDS_CHAR	table_name [TDS_SYSNAME_SIZE]
TDS_SMALLINT	table_namelen

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Detailed Description

Metadata about columns in regular and compute rows.

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Member Data Documentation

TDS_INT tds_column::bcp_prefix_len

The length, in bytes, of any length prefix this column may have.

For example, strings in some non-C programming languages are made up of a one-byte length prefix, followed by the string data itself. If the data do not have a length prefix, set prefixlen to 0. Currently not very used in code, however do not remove.

TDS_INT tds_column::column_cur_size

size written in variable (ie: char, text, binary).

-1 if NULL.

TDS_INT tds_column::column_size

maximun size of data.

For fixed is the size.

TDS_SMALLINT tds_column::column_type

This type can be different from wire type because conversion (e.g.

type of data, saved from wire

UCS-2->Ascii) can be applied. I'm beginning to wonder about the wisdom of this, however. April 2003 jkl

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

• /home/jklowden/releases/freetds-0.91/include/tds.h