![]() If your run this test code you will see that the value for the field seq is equal to the maximum value inserted in the PRIMARY KEY field.Īfter this if you try to insert a new record in your table you will see that the AUTOINCREMENT flag has started to work as expected and your new record will receive the next value from the sequence. Int lastInsertedValue = Convert.ToInt32(cmd.ExecuteScalar()) This table could be read by the usual ADO.NET classes cmd.CommandText = "SELECT seq FROM sqlite_sequence WHERE name = 'tblName'" Now, when you create a table with the AUTOINCREMENT SQLite add a new row to an internal table called sqlite_sequence. So your code to add the AUTOINCREMENT flag to your table is something like this SQLiteCommand cmd = new SQLiteCommand() Ĭmd.CommandText = "ALTER TABLE tblName RENAME TO tmp_tblName" ĪnotherField NVARCHAR(100) NOT NULL)", cnn) Ĭmd.CommandText = "INSERT INTO tblName (ID, AnotherField) SELECT ID, AnotherField FROM tmp_tblName" You are forced to rename your original table, create a new table with the schema you want and then copy from the renamed table into the new one. SET column1 = value1, column2 = value2.The first thing to say here is that SQLite has no syntax to change the settings of a column. WHERE column_name NOT IN (val-1, val-2.val-N) WHERE column_name IN (val-1, val-2.val-N) WHERE column_name EXISTS (SELECT * FROM table_name ) ![]() ON table_name ( column1, lumnN) ĬREATE TRIGGER database_igger_nameĬREATE VIRTUAL TABLE database_name.table_name USING weblog( access.log ) ĬREATE VIRTUAL TABLE database_name.table_name USING fts3( ) ![]() ON table_name ( column_name COLLATE NOCASE ) WHERE column_name BETWEEN val-1 AND val-2 ![]() ĪLTER TABLE table_name RENAME TO new_table_name ĪTTACH DATABASE 'DatabaseName' As 'Alias-Name' SQLite ANALYZE StatementĪLTER TABLE table_name ADD COLUMN column_def. help - This is a single line commentĪll the SQLite statements start with any of the keywords like SELECT, INSERT, UPDATE, DELETE, ALTER, DROP, etc., and all the statements end with a semicolon ( ). You can create it explicitly with the AUTOINCREMENT keyword. There are a couple of ways you can create an AUTOINCREMENT column: You can create it implicitly when you define the column as INTEGER PRIMARY KEY. C-style comments can span multiple lines. In SQLite, an AUTOINCREMENT column is one that uses an automatically incremented value for each row that’s inserted into the table. You can also use C-style comments, which begin with "/*" and extend up to and including the next "*/" character pair or until the end of input, whichever comes first. SQL comments begin with two consecutive "-" characters (ASCII 0x2d) and extend up to and including the next newline character (ASCII 0x0a) or until the end of input, whichever comes first. SQLite comments are extra notes, which you can add in your SQLite code to increase its readability and they can appear anywhere whitespace can occur, including inside expressions and in the middle of other SQL statements but they cannot be nested. the clauses GLOB and glob have the same meaning in SQLite statements. The important point to be noted is that SQLite is case insensitive, i.e. This chapter lists all the basic SQLite Syntax. SQLite is followed by unique set of rules and guidelines called Syntax.
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