Microsoft OLE DB 2.0 Programmers Reference and Data Access SDK (Microsoft Professional Editions)
| OLE DB Programmer's Reference |
Property group: Data Source Information
Property set: DBPROPSET_DATASOURCEINFO
Type: VT_I4
Typical R/W: R
Description: Subquery Support
A bitmask specifying the predicates in text commands that support subqueries. A combination of zero or more of the following:
- DBPROPVAL_SQ_CORRELATEDSUBQUERIES
- DBPROPVAL_SQ_COMPARISON
- DBPROPVAL_SQ_EXISTS
- DBPROPVAL_SQ_IN
- DBPROPVAL_SQ_QUANTIFIED
- DBPROPVAL_SQ_TABLE
The DBPROPVAL_SQ_CORRELATEDSUBQUERIES bit indicates that all predicates that support subqueries support correlated subqueries.
The DBPROPVAL_SQ_TABLE bit indicates that subqueries are supported in place of tables (for example, in the FROM clause of an SQL statement).
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