Question

I want to delete or add column in sqlite database

I am using following query to delete column.

ALTER TABLE TABLENAME DROP COLUMN COLUMNNAME

But it gives error

System.Data.SQLite.SQLiteException: SQLite error
near "DROP": syntax error

Answer 1

OUTDATED: While this answer was perfectly valid at time of writing, the information it contains is outdated. There is a better way to do this now, see this answer instead. The answer has been preserved for historic reasons.

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ALTER TABLE SQLite

SQLite supports a limited subset of ALTER TABLE. The ALTER TABLE command in SQLite allows the user to rename a table or to add a new column to an existing table. It is not possible to rename a column, remove a column, or add or remove constraints from a table.

You can:

1. create new table as the one you are trying to change,
2. copy all data,
3. drop old table,
4. rename the new one.