The result of group_concat(b, '.')īe used as aggregate window functions. Where rows are sorted according to the ORDER BY clause in theįor example, the frame for the row with (a=3) consists of rows (2, 'B', 'two'), Previous row ("1 PRECEDING") and the following row ("1 FOLLOWING"), inclusive, In the example above, the window frame consists of all rows between the ORDER BY a ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING The following SELECT statement returns: - a | b | group_concat Here is an example using the built-in row_number() Window functions cannot be added by the application. That exhibit the exceptional properties found in the built-in Handling in the query planner and hence new window functions The built-in window functions, however, require special-case The sqlite3_create_window_function() interface.
Furthermore, all of the built-inĪggregate functions of SQLite can be used as anĪggregate window function by adding an appropriate OVER clause.Īpplications can register new aggregate window functions using Every aggregate window functionĬan also work as a ordinary aggregate function, simply by omitting Unlike ordinary functions, window functionsĪlso, Window functions may only appear in the result set and in theīuilt-in window functions. Expr COLLATE collation-name DESC ASC NULLS FIRST NULLS LAST
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