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# 2014-03-21
#
# 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. The
# focus of this file is testing that the block-sort optimization.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set ::testprefix orderby6
# Run all tests twice. Once with a normal table and a second time
# with a WITHOUT ROWID table
#
foreach {tn rowidclause} {1 {} 2 {WITHOUT ROWID}} {
# Construct a table with 1000 rows and a split primary key
#
reset_db
do_test $tn.1 {
db eval "CREATE TABLE t1(a,b,c,PRIMARY KEY(b,c)) $rowidclause;"
db eval {
WITH RECURSIVE
cnt(x) AS (VALUES(1) UNION ALL SELECT x+1 FROM cnt WHERE x<1000)
INSERT INTO t1 SELECT x, x%40, x/40 FROM cnt;
}
} {}
# Run various ORDER BY queries that can benefit from block-sort.
# Compare the output to the same output using a full-sort enforced
# by adding + to each term of the ORDER BY clause.
#
do_execsql_test $tn.2 {
SELECT b,a,c FROM t1 ORDER BY b,a,c;
} [db eval {SELECT b,a,c FROM t1 ORDER BY +b,+a,+c}]
do_execsql_test $tn.3 {
SELECT b,a,c FROM t1 ORDER BY b,c DESC,a;
} [db eval {SELECT b,a,c FROM t1 ORDER BY +b,+c DESC,+a}]
do_execsql_test $tn.4 {
SELECT b,a,c FROM t1 ORDER BY b DESC,c,a;
} [db eval {SELECT b,a,c FROM t1 ORDER BY +b DESC,+c,+a}]
do_execsql_test $tn.5 {
SELECT b,a,c FROM t1 ORDER BY b DESC,a,c;
} [db eval {SELECT b,a,c FROM t1 ORDER BY +b DESC,+a,+c}]
# LIMIT and OFFSET clauses on block-sort queries.
#
do_execsql_test $tn.11 {
SELECT a FROM t1 ORDER BY b, a LIMIT 10 OFFSET 20;
} {840 880 920 960 1000 1 41 81 121 161}
do_execsql_test $tn.11x {
SELECT a FROM t1 ORDER BY +b, a LIMIT 10 OFFSET 20;
} {840 880 920 960 1000 1 41 81 121 161}
do_execsql_test $tn.12 {
SELECT a FROM t1 ORDER BY b DESC, a LIMIT 10 OFFSET 20;
} {839 879 919 959 999 38 78 118 158 198}
do_execsql_test $tn.12 {
SELECT a FROM t1 ORDER BY +b DESC, a LIMIT 10 OFFSET 20;
} {839 879 919 959 999 38 78 118 158 198}
do_execsql_test $tn.13 {
SELECT a FROM t1 ORDER BY b, a DESC LIMIT 10 OFFSET 45;
} {161 121 81 41 1 962 922 882 842 802}
do_execsql_test $tn.13x {
SELECT a FROM t1 ORDER BY +b, a DESC LIMIT 10 OFFSET 45;
} {161 121 81 41 1 962 922 882 842 802}
do_execsql_test $tn.14 {
SELECT a FROM t1 ORDER BY b DESC, a LIMIT 10 OFFSET 45;
} {838 878 918 958 998 37 77 117 157 197}
do_execsql_test $tn.14x {
SELECT a FROM t1 ORDER BY +b DESC, a LIMIT 10 OFFSET 45;
} {838 878 918 958 998 37 77 117 157 197}
# Many test cases where the LIMIT+OFFSET window is in various
# alignments with block-sort boundaries.
#
foreach {tx limit offset orderby} {
1 10 24 {+b,+a}
2 10 25 {+b,+a}
3 10 26 {+b,+a}
4 10 39 {+b,+a}
5 10 40 {+b,+a}
6 10 41 {+b,+a}
7 27 24 {+b,+a}
8 27 49 {+b,+a}
11 10 24 {+b DESC,+a}
12 10 25 {+b DESC,+a}
13 10 26 {+b DESC,+a}
14 10 39 {+b DESC,+a}
15 10 40 {+b DESC,+a}
16 10 41 {+b DESC,+a}
17 27 24 {+b DESC,+a}
18 27 49 {+b DESC,+a}
21 10 24 {+b,+a DESC}
22 10 25 {+b,+a DESC}
23 10 26 {+b,+a DESC}
24 10 39 {+b,+a DESC}
25 10 40 {+b,+a DESC}
26 10 41 {+b,+a DESC}
27 27 24 {+b,+a DESC}
28 27 49 {+b,+a DESC}
31 10 24 {+b DESC,+a DESC}
32 10 25 {+b DESC,+a DESC}
33 10 26 {+b DESC,+a DESC}
34 10 39 {+b DESC,+a DESC}
35 10 40 {+b DESC,+a DESC}
36 10 41 {+b DESC,+a DESC}
37 27 24 {+b DESC,+a DESC}
38 27 49 {+b DESC,+a DESC}
} {
set sql1 "SELECT a FROM t1 ORDER BY $orderby LIMIT $limit OFFSET $offset;"
set sql2 [string map {+ {}} $sql1]
# puts $sql2\n$sql1\n[db eval $sql2]
do_test $tn.21.$tx {db eval $::sql2} [db eval $sql1]
}
########################################################################
# A second test table, t2, has many columns open to sorting.
do_test $tn.31 {
db eval "CREATE TABLE t2(a,b,c,d,e,f,PRIMARY KEY(b,c,d,e,f)) $rowidclause;"
db eval {
WITH RECURSIVE
cnt(x) AS (VALUES(0) UNION ALL SELECT x+1 FROM cnt WHERE x<242)
INSERT INTO t2 SELECT x, x%3, (x/3)%3, (x/9)%3, (x/27)%3, (x/81)%3
FROM cnt;
}
} {}
do_execsql_test $tn.32 {
SELECT a FROM t2 ORDER BY b,c,d,e,f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f;}]
do_execsql_test $tn.33 {
SELECT a FROM t2 ORDER BY b,c,d,e,+f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f;}]
do_execsql_test $tn.34 {
SELECT a FROM t2 ORDER BY b,c,d,+e,+f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f;}]
do_execsql_test $tn.35 {
SELECT a FROM t2 ORDER BY b,c,+d,+e,+f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f;}]
do_execsql_test $tn.36 {
SELECT a FROM t2 ORDER BY b,+c,+d,+e,+f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f;}]
do_execsql_test $tn.37 {
SELECT a FROM t2 ORDER BY b,c,d,e,f DESC;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f DESC;}]
do_execsql_test $tn.38 {
SELECT a FROM t2 ORDER BY b,c,d,e DESC,f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e DESC,+f;}]
do_execsql_test $tn.39 {
SELECT a FROM t2 ORDER BY b,c,d DESC,e,f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d DESC,+e,+f;}]
do_execsql_test $tn.40 {
SELECT a FROM t2 ORDER BY b,c DESC,d,e,f;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c DESC,+d,+e,+f;}]
do_execsql_test $tn.41 {
SELECT a FROM t2 ORDER BY b DESC,c,d,e,f;
} [db eval {SELECT a FROM t2 ORDER BY +b DESC,+c,+d,+e,+f;}]
do_execsql_test $tn.42 {
SELECT a FROM t2 ORDER BY b DESC,c DESC,d,e,f LIMIT 31;
} [db eval {SELECT a FROM t2 ORDER BY +b DESC,+c DESC,+d,+e,+f LIMIT 31}]
do_execsql_test $tn.43 {
SELECT a FROM t2 ORDER BY b,c,d,e,f DESC LIMIT 8 OFFSET 7;
} [db eval {SELECT a FROM t2 ORDER BY +b,+c,+d,+e,+f DESC LIMIT 8 OFFSET 7}]
}
finish_test
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