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What is ID in SQLite?

Contents
  1. How do I find my SQLite ID?
  2. Does SQLite auto generate ID?
  3. Does SQLite reuse ids?
  4. What is primary key in SQLite?
You could define id as an auto increment column: create table entries (id integer primary key autoincrement, data) As MichaelDorner notes, the SQLite documentation says that an integer primary key does the same thing and is slightly faster. 22 мая 2017 г.


How do I find my SQLite ID?

SQLite has a special SQL function – last_insert_rowid() – that returns the ID of the last row inserted into the database so getting the ID of a new row after performing a SQL insert just involves executing the last_insert_rowid() command.

Does SQLite auto generate ID?

As you can see clearly from the output, SQLite implicitly creates a column named rowid and automatically assigns an integer value whenever you insert a new row into the table. Note that you can also refer to the rowid column using its aliases: _rowid_ and oid .

Does SQLite reuse ids?

ROWID values that were rolled back are ignored and can be reused. SQLite keeps track of the largest ROWID using an internal table named "sqlite_sequence". The sqlite_sequence table is created and initialized automatically whenever a normal table that contains an AUTOINCREMENT column is created.

What is primary key in SQLite?

Advertisements. A primary key is a field in a table which uniquely identifies the each rows/records in a database table. Primary keys must contain unique values. A primary key column cannot have NULL values.

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