The OLE DB Driver for SQL Server exposes the ITableDefinition::DropColumn function, which allows consumers to remove a column from a SQL Server table.
SQL Server: ALTER TABLE Customer DROP COLUMN Birth_Date;Oracle: ALTER TABLE Customer DROP COLUMN Birth_Date;Google BigQuery: ALTER TABLE Customer DROP COLUMN Birth_Date;The resulting table structure is: Table Customer Column Name Data Type First_Name char(50) Last_Name char(50) ...
In the Criteria Pane, clear the check box in the Output column for the data column you want to remove. (If you want to add the column back to the query output, you can check the Output column again.) -or- Remove the column from the output list in the SQL pane. See Also Tasks Ho...
To remove a column from the queryIn the Criteria Pane, select the grid row containing the column you want to remove and then press DELETE. -or- Remove all references to the column in the SQL pane.See AlsoTasksHow to: Add Columns to Queries...
在MySQL 中, 以下能够删除一列的SQL语句是( )A.ALTER TABLE emp REMOVE addcolumnB.ALTER TABLE emp DROP
Note If you want to remove a column from just the output of a Select query, you can do so without removing it from the query altogether. For details, seeRemove Columns from Query Results (Visual Database Tools). See Also Add Columns to Queries (Visual Database Tools) ...
Create Column Aliases Modify Queries Draw Reflexive Relationships Edit Rows in the Results Pane Rules for Updating Results Count Rows in a Table SQL Pane Sort in Ascending or Descending Order Conventions for Combining Search Conditions in the Criteria Pane Modify Join Operators Remove Joins Table Prope...
VSTASKCOLUMN VSTASKFIELD VSTASKPRIORITY VSTBM VSTBXTABVIEW VSTDTYPE VsTextPos VSTREECLOSEACTIONS VSTREEDISPLAYDATA VSTREELISTITEMCHANGE VSTREETEXTOPTIONS VSTREETEXTOPTIONS2 VSTREETOOLTIPTYPE VSTWT_LOCATION VsUIElementDescriptor VsUIPropertyDescriptor VSUPDATEPROJREFREASON VsUpToDateCheckFlags VsUpToDat...
VSTASKCOLUMN VSTASKFIELD VSTASKPRIORITY VSTBM VSTBXTABVIEW VSTDTYPE VsTextPos VSTREECLOSEACTIONS VSTREEDISPLAYDATA VSTREELISTITEMCHANGE VSTREETEXTOPTIONS VSTREETEXTOPTIONS2 VSTREETOOLTIPTYPE VSTWT_LOCATION VsUIElementDescriptor VsUIPropertyDescriptor VSUPDATEPROJREFREASON VsUpToDateCheckF...
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