X# Runtime and VO SDK Reference
X# Runtime and VO SDK Reference
VO Namespace
SQLSelect Class
SQLSelect Methods
SQLSelect.AddDateVal Method
SQLSelect.AddTimeString Method
SQLSelect.Append Method
SQLSelect.AppendRow Method
SQLSelect.BindColumn Method
SQLSelect.Close Method
SQLSelect.Column Method
SQLSelect.ColumnAttributes Method
SQLSelect.Commit Method
SQLSelect.DataField Method
SQLSelect.Delete Method
SQLSelect.DirectSkip Method
SQLSelect.Error Method
SQLSelect.Execute Method
SQLSelect.ExtendedFetch Method
SQLSelect.Fetch Method
SQLSelect.FIELDGET Method
SQLSelect.FieldGetFormatted Method
SQLSelect.FieldHyperLabel Method
SQLSelect.FieldInfo Method
SQLSelect.FieldName Method
SQLSelect.FieldPos Method
SQLSelect.FIELDPUT Method
SQLSelect.FieldSpec Method
SQLSelect.FieldStatus Method
SQLSelect.FieldSym Method
SQLSelect.FieldValidate Method
SQLSelect.FLOCK Method
SQLSelect.FreeStmt Method
SQLSelect.GetData Method
SQLSelect.GetdateVal Method
SQLSelect.GetLookupTable Method
SQLSelect.GetStatementOption Method
SQLSelect.GetTimeStamp Method
SQLSelect.GetTimeString Method
SQLSelect.GoBottom Method
SQLSelect.GoTo Method
SQLSelect.GoTop Method
SQLSelect.NoIVarGet Method
SQLSelect.NoIVarPut Method
SQLSelect.Notify Method
SQLSelect.NumResultCols Method
SQLSelect.PreExecute Method
SQLSelect.Prepare Method
SQLSelect.Refresh Method
SQLSelect.ReReadRow Method
SQLSelect.ResetCursor Method
SQLSelect.ResetNotification Method
SQLSelect.RLOCK Method
SQLSelect.RLockVerify Method
SQLSelect.Rollback Method
SQLSelect.SetColumnAttributes Method
SQLSelect.SetDataField Method
SQLSelect.SetPos Method
SQLSelect.SetPrimaryKey Method
SQLSelect.SetStatementOption Method
SQLSelect.SetTimeStamp Method
SQLSelect.Skip Method
SQLSelect.SuspendNotification Method
SQLSelect.Unlock Method
SQLSelect.Update Method
SQLSelect.UpdateCursor Method
SQLSelect.UpdateKey Method
SQLSelect.UpdateVal Method
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SQLSelect.PreExecute Method

X#
Return the SQL command that is generated by X#.

Namespace:  VO
Assembly:  VOSQLClasses (in VOSQLClasses.dll) Version: 2.19
Syntax
Copy
 VIRTUAL METHOD PreExecute(
	cSQLString
) AS USUAL CLIPPER
Request Example View Source

Parameters

cSQLString (Optional)
Type: Usual
A string containing the SQL statement which will be passed to the SQL driver.

Return Value

Type: Usual
A possibly updated SQL string that will be passed to the SQL driver.
Remarks
This method is a callback method that is passed to the SQL command generated by X# for the purpose of inspection and optional modification, immediately prior to the command being passed to ODBC. It must return SQL statement text.
Examples
The following example demonstrates the use of the SQLSelect:PreExecute() method:
X#
Copy
1METHOD PreExecute(cSQLString) CLASS SubclassOfSQLSelect
2? sSQLString    //View all the SQL can modify it here, too
3RETURN cSQLString
See Also