SQLite

# 2015-11-05
#
# 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 tests for indexes on large numeric values.
#

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


# Test cases from Zsbán Ambrus:
#
do_execsql_test numindex1-1.1 {
  CREATE TABLE t1(a INTEGER PRIMARY KEY, b);
  CREATE INDEX t1b ON t1(b);
  INSERT INTO t1(a,b) VALUES(100, 356282677878746339);
  INSERT INTO t1(a,b) VALUES(50, 356282677878746339.0);
  INSERT INTO t1(a,b) VALUES(0, 356282677878746340);
  DELETE FROM t1 WHERE a=50;
  PRAGMA integrity_check;
} {ok}

do_execsql_test numindex1-1.2 {
  CREATE TABLE t2(a,b);
  INSERT INTO t2(a,b) VALUES('b', 1<<58),
      ('c', (1<<58)+1e-7), ('d', (1<<58)+1);
  SELECT a, b, typeof(b), '|' FROM t2 ORDER BY +a;
} {b 288230376151711744 integer | c 2.88230376151712e+17 real | d 288230376151711745 integer |}

do_execsql_test numindex1-1.3 {
  SELECT x.a || CASE WHEN x.b==y.b THEN '==' ELSE '<>' END || y.a
    FROM t2 AS x, t2 AS y
   ORDER BY +x.a, +x.b;
} {b==b b==c b<>d c==b c==c c<>d d<>b d<>c d==d}

finish_test