SQLite

Artifact d1766b0cbaf87521a0245b18da8c907cc0d791b287a66e90c70f8b836985794d:

• File test/window1.test — part of check-in [3781e52085] at 2018-05-16 20:58:07 on branch exp-window-functions — Start of experimental implementation of SQL window functions. Does not yet work. (user: dan size: 3000)

# 2018 May 8
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix window1


do_execsql_test 1.0 {
  CREATE TABLE t1(a, b, c, d);
  INSERT INTO t1 VALUES(1, 2, 3, 4);
  INSERT INTO t1 VALUES(5, 6, 7, 8);
  INSERT INTO t1 VALUES(9, 10, 11, 12);
}

do_execsql_test 1.1 {
  SELECT sum(b) OVER () FROM t1
} {18 18 18}

do_execsql_test 1.2 {
  SELECT a, sum(b) OVER () FROM t1
} {1 18 5 18 9 18}

do_execsql_test 1.3 {
  SELECT a, 4 + sum(b) OVER () FROM t1
} {1 22 5 22 9 22}

do_execsql_test 1.4 {
  SELECT a + 4 + sum(b) OVER () FROM t1
} {23 27 31}

do_execsql_test 1.5 {
  SELECT a, sum(b) OVER (PARTITION BY c) FROM t1
} {1 2 5 6 9 10}

foreach {tn sql} {
  1 "SELECT sum(b) OVER () FROM t1"
  2 "SELECT sum(b) OVER (PARTITION BY c) FROM t1"
  3 "SELECT sum(b) OVER (ORDER BY c) FROM t1"
  4 "SELECT sum(b) OVER (PARTITION BY d ORDER BY c) FROM t1"
  5 "SELECT sum(b) FILTER (WHERE a>0) OVER (PARTITION BY d ORDER BY c) FROM t1"
  6 "SELECT sum(b) OVER (ORDER BY c RANGE UNBOUNDED PRECEDING) FROM t1"
  7 "SELECT sum(b) OVER (ORDER BY c ROWS 45 PRECEDING) FROM t1"
  8 "SELECT sum(b) OVER (ORDER BY c RANGE CURRENT ROW) FROM t1"
  9 "SELECT sum(b) OVER (ORDER BY c RANGE BETWEEN UNBOUNDED PRECEDING 
     AND CURRENT ROW) FROM t1"
 10 "SELECT sum(b) OVER (ORDER BY c ROWS BETWEEN UNBOUNDED PRECEDING 
     AND UNBOUNDED FOLLOWING) FROM t1"
} {
  do_test 2.$tn { lindex [catchsql $sql] 0 } 0
}

foreach {tn sql} {
  1 "SELECT * FROM t1 WHERE sum(b) OVER ()"
  2 "SELECT * FROM t1 GROUP BY sum(b) OVER ()"
  3 "SELECT * FROM t1 GROUP BY a HAVING sum(b) OVER ()"
} {
  do_catchsql_test 3.$tn $sql {1 {misuse of window function sum()}}
}

do_execsql_test 4.0 {
  CREATE TABLE t2(a, b, c);
  INSERT INTO t2 VALUES(0, 0, 0);
  INSERT INTO t2 VALUES(1, 1, 1);
  INSERT INTO t2 VALUES(2, 0, 2);
  INSERT INTO t2 VALUES(3, 1, 0);
  INSERT INTO t2 VALUES(4, 0, 1);
  INSERT INTO t2 VALUES(5, 1, 2);
  INSERT INTO t2 VALUES(6, 0, 0);
}

do_execsql_test 4.1 {
  SELECT a, sum(a) OVER (PARTITION BY b) FROM t2;
} {
  0 12  2 12  4 12  6 12   1  9  3  9  5  9 
}

do_execsql_test 4.2 {
  SELECT a, sum(a) OVER (PARTITION BY b) FROM t2 ORDER BY a;
} {
  0 12  1  9  2 12  3  9  4 12  5  9 6 12   
}

do_execsql_test 4.3 {
  SELECT a, sum(a) OVER () FROM t2 ORDER BY a;
} {
  0 21  1  21  2 21  3  21  4 21  5  21 6 21   
}

do_execsql_test 4.4 {
  SELECT a, sum(a) OVER (ORDER BY a) FROM t2;
} {
  0 0  1 1  2 3  3 6  4 10  5 15  6 21
}

do_execsql_test 4.5 {
  SELECT a, sum(a) OVER (PARTITION BY b ORDER BY a) FROM t2 ORDER BY a
} {
  0 0  1 1  2 2  3 4  4 6  5 9  6 12
}

finish_test