You’re working on your SQL Server database, and you encounter this frustrating error: “Cannot insert explicit value for identity column in table ‘Table’ when IDENTITY_INSERT is set to OFF.” This error can halt your progress and leave you scratching your head.
You’re on a tight deadline, and every minute counts. You’ve meticulously prepared your data, and just when you think you’re ready to insert it into your table, this error pops up. It’s not just an inconvenience; it’s a roadblock. Your project is at a standstill, and the clock is ticking. The frustration builds as you try to figure out what went wrong and how to fix it.
Solution
The good news is, there’s a straightforward solution to this problem. SQL Server does not allow explicit values to be inserted into an identity column unless the IDENTITY_INSERT option is set to ON for that table. Here’s how you can resolve this issue:
- Enable
IDENTITY_INSERTfor the Table:SET IDENTITY_INSERT stockscancategories ON;
- Insert the Data:
INSERT INTO stockscancategories (ID, Column1, Column2, ...) VALUES (explicit_value, value1, value2, ...);
- Disable
IDENTITY_INSERTafter Insertion:- S
ET IDENTITY_INSERT stockscancategories OFF;
- S
Detailed Explanation
When you try to insert an explicit value into an identity column, SQL Server throws an error because it expects to manage the values for this column automatically. The IDENTITY_INSERT option allows you to override this behavior temporarily.
- Enable
IDENTITY_INSERT: This command tells SQL Server to allow explicit values to be inserted into the identity column. - Insert the Data: You can now insert your data, including explicit values for the identity column.
- Disable
IDENTITY_INSERT: After the insertion, it’s crucial to turn offIDENTITY_INSERTto maintain the integrity of your identity column.
Conclusion
By using the IDENTITY_INSERT option, you can easily resolve the “Cannot insert explicit value for identity column” error in SQL Server. This method allows you to insert explicit values into identity columns temporarily, ensuring your data operations proceed smoothly.
Remember to always disable IDENTITY_INSERT after your operation to maintain the integrity of your identity columns. With this knowledge, you can tackle this common SQL Server issue confidently and keep your projects on track.