[Table_Exists]
| Link | Table_Exists |
| Author | John Burwell |
| Category | Database |
| Version | 8.x |
| License | Public Domain |
| Posted | 26 Apr 2006 |
| Updated | 26 Apr 2006 |
| More by this author... | |
Description
Table_Exists accepts two parameters, a -Database string specifying a database and a -Table string specifying a table to find within that database. If the table exists, TRUE is returned. Otherwise, the tag returns FALSE.
Sample Usage
If: (Table_Exists: 'elusive_table', -Database='extant_db'); Output: 'The table was found.'; Else; Output: 'The table was not found.'; /If;
Source Code
Click the "Download" button below to retrieve a copy of this tag, including the complete documentation and sample usage shown on this page. Place the downloaded ".inc" file in your LassoStartup folder, restart Lasso, and you can begin using this tag immediately.
Define_Tag: 'Table_Exists',
-Required='Table',
-Required='Database';
Database_TableNames: #Database;
If: (Database_TableNameItem) == #Table;
Return: TRUE;
/If;
/Database_TableNames;
Return: FALSE;
/Define_Tag;
Related Tags
Comments
No comments
