# 2019-08-30
#
# 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.
#
#***********************************************************************
# Test cases for RANGE BETWEEN and especially with NULLS LAST
#

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

ifcapable !windowfunc {
  finish_test
  return
}

do_execsql_test 1.0 {
  CREATE TABLE t1(a, b);
  INSERT INTO t1 VALUES(NULL, 1);
  INSERT INTO t1 VALUES(NULL, 2);
  INSERT INTO t1 VALUES(NULL, 3);
} {}

foreach {tn win} {
  1 { ORDER BY a RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING }
  2 { ORDER BY a NULLS LAST RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING }
  3 { ORDER BY a DESC RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING }
  4 { ORDER BY a DESC NULLS FIRST RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING }

  5 { ORDER BY a      NULLS LAST  RANGE BETWEEN 1 FOLLOWING AND 2 FOLLOWING }
  6 { ORDER BY a DESC NULLS FIRST RANGE BETWEEN 1 FOLLOWING AND 2 FOLLOWING }

  7 { ORDER BY a      NULLS LAST  RANGE BETWEEN 2 PRECEDING AND 1 PRECEDING }
  8 { ORDER BY a DESC NULLS FIRST RANGE BETWEEN 2 PRECEDING AND 1 PRECEDING }
} {
  do_execsql_test 1.$tn "
    SELECT sum(b) OVER win FROM t1
    WINDOW win AS ( $win )
  " {6 6 6}
}

do_execsql_test 1.2 {
  SELECT sum(b) OVER win FROM t1
  WINDOW win AS (
    ORDER BY a DESC NULLS FIRST RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING
  )
} {6 6 6}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 2.0 {
  CREATE TABLE t1(a, b);
  INSERT INTO t1 VALUES(1, NULL);
  INSERT INTO t1 VALUES(2, 45);
  INSERT INTO t1 VALUES(3, 66.2);
  INSERT INTO t1 VALUES(4, 'hello world');
  INSERT INTO t1 VALUES(5, 'hello world');
  INSERT INTO t1 VALUES(6, X'1234');
  INSERT INTO t1 VALUES(7, X'1234');
  INSERT INTO t1 VALUES(8, NULL);
}

foreach {tn win} {
  1 "ORDER BY b RANGE BETWEEN 1 PRECEDING AND 2 PRECEDING"
  2 "ORDER BY b RANGE BETWEEN 2 FOLLOWING AND 2 FOLLOWING"
  3 "ORDER BY b NULLS LAST RANGE BETWEEN 1 PRECEDING AND 2 PRECEDING"
  4 "ORDER BY b NULLS LAST RANGE BETWEEN 2 FOLLOWING AND 2 FOLLOWING"
} {
  do_execsql_test 2.1.$tn "
    SELECT a, sum(a) OVER win FROM t1
    WINDOW win AS ( $win )
    ORDER BY 1
  " {1 9   2 {}  3 {}  4 9  5 9  6 13  7 13  8 9}
}

#-------------------------------------------------------------------------
ifcapable json1 {
  reset_db
  do_execsql_test 3.0 {
    CREATE TABLE testjson(id INTEGER PRIMARY KEY, j TEXT, x TEXT);
    INSERT INTO testjson VALUES(1, '{"a":1}', 'a');
    INSERT INTO testjson VALUES(2, '{"b":2}', 'b');
    INSERT INTO testjson VALUES(3, '{"c":3}', 'c');
    INSERT INTO testjson VALUES(4, '{"d":4}', 'd');
  }
  
  do_execsql_test 3.1 {
    SELECT json_group_array(json(j)) FROM testjson;
  } {
    {[{"a":1},{"b":2},{"c":3},{"d":4}]}
  }
  
  do_execsql_test 3.2 {
    SELECT json_group_array(json(j)) OVER (ORDER BY id) FROM testjson;
  } {
    {[{"a":1}]}
    {[{"a":1},{"b":2}]}
    {[{"a":1},{"b":2},{"c":3}]}
    {[{"a":1},{"b":2},{"c":3},{"d":4}]}
  }
  
  do_execsql_test 3.3 {
    SELECT json_group_array(json(j)) OVER (
      ORDER BY id RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
      EXCLUDE TIES
    ) FROM testjson;
  } {
    {[{"a":1}]}
    {[{"a":1},{"b":2}]}
    {[{"a":1},{"b":2},{"c":3}]}
    {[{"a":1},{"b":2},{"c":3},{"d":4}]}
  }
  
  do_execsql_test 3.4 {
    SELECT json_group_array(json(j)) OVER (
      ORDER BY id ROWS BETWEEN 1 PRECEDING AND 1 FOLLOWING
    ) FROM testjson;
  } {
    {[{"a":1},{"b":2}]}
    {[{"a":1},{"b":2},{"c":3}]}
    {[{"b":2},{"c":3},{"d":4}]}
    {[{"c":3},{"d":4}]}
  }
  
  do_execsql_test 3.5 {
    SELECT json_group_array(json(j)) OVER (
      ORDER BY id ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING
    ) FROM testjson;
  } {
    {[]}
    {[{"a":1}]}
    {[{"a":1},{"b":2}]}
    {[{"b":2},{"c":3}]}
  }
  
  do_execsql_test 3.5a {
    UPDATE testjson SET j = replace(j,char(125),',"e":9'||char(125));
    SELECT j FROM testjson;
  } {
    {{"a":1,"e":9}}
    {{"b":2,"e":9}}
    {{"c":3,"e":9}}
    {{"d":4,"e":9}}
  }
  do_execsql_test 3.5b {
    SELECT group_concat(x,'') OVER (
      ORDER BY id ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING
    ) FROM testjson ORDER BY id;
  } {bc cd d {}}
  do_execsql_test 3.5c {
    SELECT json_group_array(json(j)) OVER (
      ORDER BY id ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING
    ) FROM testjson;
  } {
    {[{"b":2,"e":9},{"c":3,"e":9}]}
    {[{"c":3,"e":9},{"d":4,"e":9}]}
    {[{"d":4,"e":9}]}
    {[]}
  }
  do_execsql_test 3.5d {
    SELECT json_group_object(x,json(j)) OVER (
      ORDER BY id ROWS BETWEEN 1 FOLLOWING AND 2 FOLLOWING
    ) FROM testjson;
  } {
    {{"b":{"b":2,"e":9},"c":{"c":3,"e":9}}}
    {{"c":{"c":3,"e":9},"d":{"d":4,"e":9}}}
    {{"d":{"d":4,"e":9}}}
    {{}}
  }
  
  do_execsql_test 3.7b {
    SELECT group_concat(x,'') FILTER (WHERE id!=2) OVER (
      ORDER BY id ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING
    ) FROM testjson;
  } {{} a a c}

  do_execsql_test 3.7c {
    SELECT json_group_array(json(j)) FILTER (WHERE id!=2) OVER (
      ORDER BY id ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING
    ) FROM testjson
  } {
    {[]}
    {[{"a":1,"e":9}]}
    {[{"a":1,"e":9}]}
    {[{"c":3,"e":9}]}
  }
  do_execsql_test 3.7d {
    SELECT json_group_object(x,json(j)) FILTER (WHERE id!=2) OVER (
      ORDER BY id ROWS BETWEEN 2 PRECEDING AND 1 PRECEDING
    ) FROM testjson
  } {
    {{}}
    {{"a":{"a":1,"e":9}}}
    {{"a":{"a":1,"e":9}}}
    {{"c":{"c":3,"e":9}}}
  }
}

#-------------------------------------------------------------------------
reset_db
do_execsql_test 4.0 {
  CREATE TABLE x(a);
  INSERT INTO x VALUES(1);
  INSERT INTO x VALUES(2);
}

do_execsql_test 4.1 {
  WITH y AS (
      SELECT Row_Number() OVER (win) FROM x WINDOW win AS (PARTITION BY a)
  )
  SELECT * FROM y;
} {
  1 1
}

do_catchsql_test 4.2 {
  WITH y AS (
    SELECT Row_Number() OVER (win) FROM x WINDOW win AS (PARTITION
  BY fake_column))
  SELECT * FROM y;
} {1 {no such column: fake_column}}

do_catchsql_test 4.3 {
  SELECT 1 WINDOW win AS (PARTITION BY fake_column);
} {0 1}

finish_test