# 2022 October 18
#
# 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.
#
#***********************************************************************
#

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

proc custom {a b} { return [string compare $a $b] }
db collate custom custom

do_execsql_test 1.0 {
  CREATE TABLE t1(a INTEGER PRIMARY KEY, b TEXT COLLATE custom);
  INSERT INTO t1 VALUES(1, 'one');
  INSERT INTO t1 VALUES(2, 'two');
  INSERT INTO t1 VALUES(3, 'three');
  INSERT INTO t1 VALUES(4, 'four');
  INSERT INTO t1 VALUES(5, 'five');
  INSERT INTO t1 VALUES(6, 'six');
  CREATE INDEX t1b ON t1(b);
}

do_execsql_test 1.1 {
  SELECT * FROM t1
} {
  1 one 2 two 3 three 4 four 5 five 6 six
}

do_execsql_test 1.2 {
  SELECT group_concat(a,',') OVER win FROM t1 
  WINDOW win AS (
    ORDER BY b RANGE BETWEEN 1 PRECEDING AND 2 PRECEDING
  )
} {
  5 4 1 6 3 2
}

proc custom {a b} { return [string compare $b $a] }

do_execsql_test 1.3 {
  SELECT group_concat(a,',') OVER win FROM t1 
  WINDOW win AS (
    ORDER BY b RANGE BETWEEN 1 PRECEDING AND 2 PRECEDING
  )
} {
  5 5,4 5,4,1 5,4,1,6 5,4,1,6,3 5,4,1,6,3,2
}

finish_test

