| title | description | author | ms.author | ms.date | ms.service | ms.subservice | ms.topic |
|---|---|---|---|---|---|---|---|
Sparse Columns Support (ODBC) |
Sparse Columns Support (ODBC) |
markingmyname |
maghan |
03/16/2017 |
sql |
native-client |
reference |
[!INCLUDE SQL Server]
Important
[!INCLUDEsnac-removed-oledb-and-odbc]
This topic describes [!INCLUDEssNoVersion] Native Client ODBC support for sparse columns. For a sample demonstrating ODBC support for sparse columns, see Call SQLColumns on a Table with Sparse Columns. For more information about sparse columns, see Sparse Columns Support in SQL Server Native Client.
The application parameter descriptor (APD) descriptor field and SQL_SOPT_SS_NAME_SCOPE statement attribute accepts the additional values SQL_SS_NAME_SCOPE_EXTENDED and SQL_SS_NAME_SCOPE_SPARSE_COLUMN_SET. These values specify which columns are included in the result set returned by SQLColumns. For more information about SQL_SOPT_SS_NAME_SCOPE, see SQLSetStmtAttr.
A new implementation row descriptor (IRD), a read-only SQLSMALLINT field called SQL_CA_SS_IS_COLUMN_SET, can be used to determine if a column is an XML column_set value. SQL_CA_SS_IS_COLUMN_SET takes the values SQL_TRUE and SQL_FALSE.
Two [!INCLUDEssNoVersion] specific columns (SS_IS_SPARSE and SS_IS_COLUMN_SET) have been added to the result set for SQLColumns.
The following ODBC functions have been updated to support sparse columns in [!INCLUDEssNoVersion] Native Client: