Catalog Metadata
This topic describes the column metadata returned by SQLColumns and SQLProcedureColumns, and the data type metadata returned by SQLGetTypeInfo.
Remarks
The following column values are returned for date/time types by SQLColumns and SQLProcedureColumns.
| Parameter Type | date | time | smalldatetime | datetime | datetime2 | datetimeoffset |
|---|---|---|---|---|---|---|
| DATA_TYPE | SQL_TYPE_DATE | SQL_SS_TIME2 | SQL_TYPE_TIMESTAMP | SQL_TYPE_TIMESTAMP | SQL_TYPE_TIMESTAMP | SQL_SS_TIMESTAMPOFFSET |
| TYPE_NAME | date | time | smalldatetime | datetime | datetime2 | datetimeoffset |
| COLUMN_SIZE | 10 | 8,10..16 | 16 | 23 | 19, 21..27 | 26, 28..34 |
| BUFFER_LENGTH | 6 | 10 | 16 | 16 | 16 | 20 |
| DECIMAL_DIGITS | 0 | 0..7 | 0 | 3 | 1..7 | 1..7 |
| SQL_DATA_TYPE | SQL_DATETIME | SQL_SS_TYPE_TIME2 | SQL_DATETIME | SQL_DATETIME | SQL_DATETIME | SQL_SS_TYPE_TIMESTAMPOFFSET |
| SQL_DATETIME_SUB | SQL_CODE_DATE | NULL | SQL_CODE_TIMESTAMP | SQL_CODE_TIMESTAMP | SQL_CODE_TIMESTAMP | NULL |
| CHAR_OCTET_LENGTH | NULL | NULL | NULL | NULL | NULL | NULL |
| SS_DATA_TYPE | 0 | 0 | 111 | 111 | 0 | 0 |
The following column values are returned for date/time types by SQLGetTypeInfo:
| Parameter Type | date | time | smalldatetime | datetime | datetime2 | datetimeoffset |
|---|---|---|---|---|---|---|
| TYPE_NAME | date | time | smalldatetime | datetime | datetime2 | datetimeoffset |
| DATA_TYPE | SQL_TYPE_DATE | SQL_SS_TIME2 | SQL_TYPE_TIMESTAMP | SQL_TYPE_TIMESTAMP | SQL_TYPE_TIMESTAMP | SQL_SS_TIMESTAMPOFFSET |
| COLUMN_SIZE | 10 | 16 | 16 | 23 | 27 | 34 |
| LITERAL_PREFIX | ' | ' | ' | ' | ' | ' |
| LITERAL_SUFFIX | ' | ' | ' | ' | ' | ' |
| CREATE_PARAMS | NULL | scale | NULL | NULL | scale | scale |
| NULLABLE | SQL_NULLABLE | SQL_NULLABLE | SQL_NULLABLE | SQL_NULLABLE | SQL_NULLABLE | SQL_NULLABLE |
| CASE_SENSITIVE | SQL_FALSE | SQL_FALSE | SQL_FALSE | SQL_FALSE | SQL_FALSE | SQL_FALSE |
| SEARCHABLE | SQL_PRED_SEARCHABLE | SQL_PRED_SEARCHABLE | SQL_PRED_SEARCHABLE | SQL_PRED_SEARCHABLE | SQL_PRED_SEARCHABLE | SQL_PRED_SEARCHABLE |
| UNSIGNED_ATTRIBUTE | NULL | NULL | NULL | NULL | NULL | NULL |
| FXED_PREC_SCALE | SQL_FALSE | SQL_FALSE | SQL_FALSE | SQL_FALSE | SQL_FALSE | SQL_FALSE |
| AUTO_UNIQUE_VALUE | NULL | NULL | NULL | NULL | NULL | NULL |
| LOCAL_TYPE_NAME | date | time | smalldatetime | datetime | datetime2 | datetimeoffset |
| MINIMUM_SCALE | 0 | 0 | 0 | 3 | 0 | 0 |
| MAXIMUM_SCALE | 0 | 7 | 0 | 3 | 7 | 7 |
| SQL_DATA_TYPE | SQL_DATETIME | SQL_SS_TIME2 | SQL_DATETIME | SQL_DATETIME | SQL_DATETIME | SQL_SS_TYPE_TIMESTAMPOFFSET |
| SQL_DATETIME_SUB | SQL_CODE_DATE | NULL | SQL_CODE_TIMESTAMP | SQL_CODE_TIMESTAMP | SQL_CODE_TIMESTAMP | NULL |
| NUM_PREC_RADIX | NULL | NULL | NULL | NULL | NULL | NULL |
| INTERVAL_PRECISION | NULL | NULL | NULL | NULL | NULL | NULL |
| USERTYPE | 0 | 0 | 12 | 22 | 0 | 0 |