- Generated by
1.16.1
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FreeTDS API
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Metadata about columns in regular and compute rows. More...
#include <tds.h>
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_INT | column_bindlen |
| TDS_SMALLINT | column_bindtype |
| TDS_UCHAR | column_collation [5] |
| uint8_t | column_computed:1 |
| 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 |
| uint8_t | column_hidden:1 |
| char | column_iconv_buf [9] |
| unsigned char | column_iconv_left |
| uint8_t | column_identity:1 |
| uint8_t | column_key:1 |
| TDS_INT * | column_lenbind |
| DSTR | column_name |
| uint8_t | column_nullable:1 |
| TDS_SMALLINT * | column_nullbind |
| TDS_SMALLINT | column_operand |
| TDS_TINYINT | column_operator |
| uint8_t | column_output:1 |
| TDS_TINYINT | column_prec |
| precision for decimal/numeric and some datetime types | |
| 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 |
| uint8_t | column_timestamp:1 |
| TDS_SERVER_TYPE | 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, 4, 5 or 8). | |
| uint8_t | column_writeable:1 |
| const TDSCOLUMNFUNCS * | funcs |
| struct { | |
| TDS_INT column_size | |
| TDS_SERVER_TYPE column_type | |
| type of data, saved from wire | |
| } | on_server |
| DSTR | table_column_name |
| DSTR | table_name |
| uint8_t | use_iconv_out:1 |
Metadata about columns in regular and compute rows.
| 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 types is the size.
| TDS_SERVER_TYPE 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
| TDS_TINYINT tds_column::column_varint_size |
Size of length when reading from wire (0, 1, 2, 4, 5 or 8).
0 means fixed type. 1, 2 and 4 means the data stream contains a length exactly these bytes. 5 means old BLOB types having TEXTPTR on them. 5 as they contain 2 lengths, one 4 bytes for data length and another 1 byte for TEXTPTR length. 8 are MSSQL VARBINARY/VARCHAR(MAX) which have a 8 byte length, although data types are still limited to 2GB.
1.16.1