Overview. This SQL error generally means that somewhere in the query, there is invalid syntax. Some common examples: Using a database-specific SQL for the wrong database (eg BigQuery supports DATE_ADD, but Redshift supports DATEADD)
SQLite AUTOINCREMENT is a keyword used for auto incrementing a value of a field in the table. We can auto increment a field value by using AUTOINCREMENT keyword when creating a table with specific column name to auto increment.
Auto-increment allows a unique number to be generated automatically when a new record is inserted into a table. Often this is the primary key field that we would like to be created automatically every time a new record is inserted.
Summary. The AUTOINCREMENT keyword imposes extra CPU, memory, disk space, and disk I/O overhead and should be avoided if not strictly needed. It is usually not needed. In SQLite, a column with type INTEGER PRIMARY KEY is an alias for the ROWID (except in WITHOUT ROWID tables) which is always a 64-bit signed integer.
According to SQLite FAQ you have to declare either a INTEGER PRIMARY KEY
or INTEGER PRIMARY KEY AUTOINCREMENT
column to achieve that.
In SQLite you need not to specify AUTOINCREMENT if you are specifying a column as Primary Key...
SQLite AUTOINCREMENT : You Should Avoid Using It
Unless you create a table specifying the WITHOUT ROWID
option, you get an implicit auto increment column called rowid
.
The rowid
column store 64-bit signed integer that uniquely identifies a row within the table.
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