Explain How Can You Delete Or Add Columns From An Existing Table In S

1.	Explain How Can You Delete Or Add Columns From An Existing Table In Sqlite?
Answer» There is a very limited support for alter ( add or delete ) table. In case if you WANT to delete or add columns from an EXISTING table in SQLite you have to first SAVE the existing data to a temporary table, drop the old table or COLUMN, create the NEW table and then copy the data back in from the temporary table. There is a very limited support for alter ( add or delete ) table. In case if you want to delete or add columns from an existing table in SQLite you have to first save the existing data to a temporary table, drop the old table or column, create the new table and then copy the data back in from the temporary table.

Explain How Can You Delete Or Add Columns From An Existing Table In Sqlite?

Answer»

There is a very limited support for alter ( add or delete ) table. In case if you WANT to delete or add columns from an EXISTING table in SQLite you have to first SAVE the existing data to a temporary table, drop the old table or COLUMN, create the NEW table and then copy the data back in from the temporary table.

There is a very limited support for alter ( add or delete ) table. In case if you want to delete or add columns from an existing table in SQLite you have to first save the existing data to a temporary table, drop the old table or column, create the new table and then copy the data back in from the temporary table.

Discussion

No Comment Found

Related InterviewSolutions

I Accidentally Deleted Some Important Information From My Sqlite Database. How Can I Recover It?
What Is An Sqlite_corrupt Error? What Does It Mean For The Database To Be "malformed"? Why Am I Getting This Error?
Does Sqlite Support Foreign Keys?
The Sql Standard Requires That A Unique Constraint Be Enforced Even If One Or More Of The Columns In The Constraint Are Null, But Sqlite Does Not Do This. Isn't That A Bug?
What Is The Export Control Classification Number (eccn) For Sqlite?
My Query Does Not Return The Column Name That I Expect. Is This A Bug?
Insert Is Really Slow - I Can Only Do Few Dozen Inserts Per Second?
Case-insensitive Matching Of Unicode Characters Does Not Work?
Why Does Round(9.95,1) Return 9.9 Instead Of 10.0? Shouldn't 9.95 Round Up?
What Is An Sqlite_schema Error, And Why Am I Getting One?