On Transact SQL language the Msg 343 Level 15 - Transact sql error message Msg 343 Level 15 - Unknown object type used in a CREATE, DROP, or ALTER statement.
Msg 343 Level 15 Example:
Invalid alter table:
USE model;
GO
ALTER students ADD dep_id INT;
GO
| Message |
|---|
| Msg 343, Level 15, State 1, Line 1 |
| Unknown object type 'students' used in a CREATE, DROP, or ALTER statement. |
| Msg 102, Level 15, State 1, Line 1 |
| Incorrect syntax near 'dep_id'. |
Correct alter table:
USE model;
GO
ALTER TABLE students ADD dep_id INT;
GO
| Message |
|---|
| Command(s) completed successfully. |
Other error messages:
- Conversion failed when converting date and/or time from character string
- Is not a defined system type
- Conversion failed when converting the varchar value
- Cannot insert the value NULL into column
- Cannot insert explicit value for identity column in table
- The INSERT statement conflicted with the FOREIGN KEY constraint
- The DELETE statement conflicted with the REFERENCE constraint