delete all sql code example

Example 1: sql delete where in

-- Deletes all records where `columnName` matches the values in brackets.
DELETE FROM tableName WHERE columnName IN ('val1', 'val2', 'val3');

Example 2: sql delete all values in a column

UPDATE TableName SET ColumnName = NULL

Example 3: delete all rows from table sql

-- Quick, no possible rollback
TRUNCATE TABLE my_table;
-- With rollback
DELETE FROM my_table;
COMMIT;

Example 4: delete query

public function deletedata(){	

	$this->db->where('id', 2);	
	$this->db->delete('table_name');

	}