4D v13.4
Is table number valid
- 4D Language Reference
-
- Structure Access
-
- Structure Access Commands
- CREATE INDEX
- DELETE INDEX
- Field
- Field name
- Get external data pathNew
- GET FIELD ENTRY PROPERTIES
- GET FIELD PROPERTIES
- Get last field number
- Get last table number
- GET MISSING TABLE NAMES
- GET RELATION PROPERTIES
- GET TABLE PROPERTIES
- Is field number valid
- Is table number valid
- REGENERATE MISSING TABLE
- RELOAD EXTERNAL DATANew
- SET EXTERNAL DATA PATHNew
- SET INDEX
- Table
- Table name
4D v13.4
Is table number valid
Is table number valid
| Is table number valid ( tableNum ) -> Function result | ||||||||
| Parameter | Type | Description | ||||||
| tableNum | Longint |
|
Table number | |||||
| Function result | Boolean |
|
True = table exists in database, False = table does not exist in database | |||||
The Is table number valid command returns True if the table whose number is passed in the tableNum parameter exists in the database and False otherwise. Keep in mind that the command returns False if the table is in the Trash of the Explorer.
This command can be used to detect any table deletions, which create gaps in the sequence of table numbers.
PROPERTIES
Product: 4D
Theme: Structure Access
Number:
999
INDEX
HISTORY
Created: 4D v11 SQL
SEE ALSO
Get last table number
Is field number valid
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