Saving changes is not permitted when altering the structure of a SQL Server 2008 table, such as changing a column's data type. This occurs because SQL Server prevents changes that require recreating the table by default. To resolve this, one can uncheck the "Prevent saving changes that require table re-creation" option in the Tools > Options > Designers menu. The document then demonstrates altering the MST_STUDENT table column data type as an example.

1. SAVING CHANGES IS NOT
PERMITTED ON SQL
SERVER 2008. HOW TO
SOLVE?
BY:
IKHWAN KRISNADI – SOFTWARE ENGINEER

2. IKHWAN KRISNADI - SOFTWARE ENGINEER
CAUSED BY
 SAVING CHANGES IS NOT
PERMITTED WHEN ALTER TABLE
(TABLE STRUCTURE IS CHANGED)
:
 CHANGE DATA TYPE ON EXISTING
COLUMS
 OR CHANGE ALLOW NULLS ON
EXISTING COLUMNS

3. IKHWAN KRISNADI - SOFTWARE ENGINEER
SOLUTION
 DISABLE PREVENT CHANGES TO
ALTER TABLE

4. IKHWAN KRISNADI - SOFTWARE ENGINEER
EXAMPLE
 SQL SERVER MANAGEMENT
STUDIO THAT USED IS SQL
SERVER MANAGEMENT STUDIO
2008 R2
 TABLE THAT USED IS
MST_STUDENT

5. IKHWAN KRISNADI - SOFTWARE ENGINEER
SCRIPT TABLE
MST_STUDENT

6. IKHWAN KRISNADI - SOFTWARE ENGINEER
MST_STUDENT BEFORE
ALTERED

7. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE
MST_STUDENT
 RIGHT CLICK ON TABLE
MST_STUDENT, THEN CLICK
DESIGN

8. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE MST_STUDENT
(CONTINUED)
 CHANGE DATA TYPE COLUMN
“ADDRESS1” BECOME VARCHAR(300)
 SAVE CHANGES

9. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE MST_STUDENT
(CONTINUED)
 OCCURS NOTIFICATION THAT
CHANGES IS NOT PERMITTED

10. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE MST_STUDENT
(CONTINUED)
 CLOSE THE NOTIFICATION
 CLIK TOOLS, THEN CLICK
OPTIONS

11. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE MST_STUDENT
(CONTINUED)
 CLICK DESIGNERS

12. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE MST_STUDENT
(CONTINUED)
 UNCHECK PREVENT SAVING
CHANGES THAT REQUIRE TABLE
RE-CREATION

13. ALTER TABLE MST_STUDENT
(CONTINUED)
 CLICK OK
 RIGHT CLICK ON TABLE
MST_STUDENT, THEN CLICK
DESIGN
 CHANGE DATA TYPE COLUMN
“ADDRESS1” BECOME
VARCHAR(300)
 SAVE CHANGES
IKHWAN KRISNADI - SOFTWARE
ENGINEER

14. IKHWAN KRISNADI - SOFTWARE ENGINEER
ALTER TABLE MST_STUDENT
(CONTINUED)
 TRY TO SELECT ON TABLE
MST_STUDENT AFTER CHANGES

15. ALTER TABLE MST_STUDENT
(CONTINUED)
 VIEW DESIGN TABLE
MST_STUDENT AFTER CHANGES
IKHWAN KRISNADI - SOFTWARE
ENGINEER

16. NOTE
 DON’T CHANGE STRUCTURE
TABLE WHEN TABLE IS ACCESSED
BY USER
IKHWAN KRISNADI - SOFTWARE ENGINEER

17. THANK YOU
IKHWAN KRISNADI - SOFTWARE ENGINEER