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409 lines
15 KiB
Plaintext
409 lines
15 KiB
Plaintext
# 2011 July 1
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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# This file implements regression tests for SQLite library. The
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# focus of this script is the DISTINCT modifier.
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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ifcapable !compound {
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finish_test
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return
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}
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set testprefix distinct
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proc is_distinct_noop {sql} {
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set sql1 $sql
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set sql2 [string map {DISTINCT ""} $sql]
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set program1 [list]
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set program2 [list]
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db eval "EXPLAIN $sql1" {
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if {$opcode != "Noop" && $opcode != "Explain"} { lappend program1 $opcode }
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}
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db eval "EXPLAIN $sql2" {
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if {$opcode != "Noop" && $opcode != "Explain"} { lappend program2 $opcode }
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}
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return [expr {$program1==$program2}]
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}
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proc do_distinct_noop_test {tn sql} {
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uplevel [list do_test $tn [list is_distinct_noop $sql] 1]
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}
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proc do_distinct_not_noop_test {tn sql} {
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uplevel [list do_test $tn [list is_distinct_noop $sql] 0]
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}
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proc do_temptables_test {tn sql temptables} {
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uplevel [list do_test $tn [subst -novar {
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set ret ""
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db eval "EXPLAIN [set sql]" {
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if {$opcode == "OpenEphemeral" || $opcode == "SorterOpen"} {
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if {$p5!=8 && $p5!=0} { error "p5 = $p5" }
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if {$p5==8} {
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lappend ret hash
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} else {
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lappend ret btree
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}
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}
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}
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set ret
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}] $temptables]
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}
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#-------------------------------------------------------------------------
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# The following tests - distinct-1.* - check that the planner correctly
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# detects cases where a UNIQUE index means that a DISTINCT clause is
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# redundant. Currently the planner only detects such cases when there
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# is a single table in the FROM clause.
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#
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do_execsql_test 1.0 {
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CREATE TABLE t1(a, b, c, d);
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CREATE UNIQUE INDEX i1 ON t1(b, c);
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CREATE UNIQUE INDEX i2 ON t1(d COLLATE nocase);
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CREATE TABLE t2(x INTEGER PRIMARY KEY, y);
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CREATE TABLE t3(c1 PRIMARY KEY NOT NULL, c2 NOT NULL);
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CREATE INDEX i3 ON t3(c2);
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CREATE TABLE t4(a, b NOT NULL, c NOT NULL, d NOT NULL);
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CREATE UNIQUE INDEX t4i1 ON t4(b, c);
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CREATE UNIQUE INDEX t4i2 ON t4(d COLLATE nocase);
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}
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foreach {tn noop sql} {
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1.1 0 "SELECT DISTINCT b, c FROM t1"
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1.2 1 "SELECT DISTINCT b, c FROM t4"
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2.1 0 "SELECT DISTINCT c FROM t1 WHERE b = ?"
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2.2 1 "SELECT DISTINCT c FROM t4 WHERE b = ?"
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3 1 "SELECT DISTINCT rowid FROM t1"
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4 1 "SELECT DISTINCT rowid, a FROM t1"
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5 1 "SELECT DISTINCT x FROM t2"
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6 1 "SELECT DISTINCT * FROM t2"
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7 1 "SELECT DISTINCT * FROM (SELECT * FROM t2)"
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8.1 0 "SELECT DISTINCT * FROM t1"
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8.2 1 "SELECT DISTINCT * FROM t4"
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8 0 "SELECT DISTINCT a, b FROM t1"
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9 0 "SELECT DISTINCT c FROM t1 WHERE b IN (1,2)"
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10 0 "SELECT DISTINCT c FROM t1"
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11 0 "SELECT DISTINCT b FROM t1"
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12.1 0 "SELECT DISTINCT a, d FROM t1"
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12.2 0 "SELECT DISTINCT a, d FROM t4"
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13.1 0 "SELECT DISTINCT a, b, c COLLATE nocase FROM t1"
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13.2 0 "SELECT DISTINCT a, b, c COLLATE nocase FROM t4"
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14.1 0 "SELECT DISTINCT a, d COLLATE nocase FROM t1"
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14.2 1 "SELECT DISTINCT a, d COLLATE nocase FROM t4"
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15 0 "SELECT DISTINCT a, d COLLATE binary FROM t1"
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16.1 0 "SELECT DISTINCT a, b, c COLLATE binary FROM t1"
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16.2 1 "SELECT DISTINCT a, b, c COLLATE binary FROM t4"
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16 0 "SELECT DISTINCT t1.rowid FROM t1, t2"
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17 0 { /* Technically, it would be possible to detect that DISTINCT
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** is a no-op in cases like the following. But SQLite does not
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** do so. */
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SELECT DISTINCT t1.rowid FROM t1, t2 WHERE t1.rowid=t2.rowid }
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18 1 "SELECT DISTINCT c1, c2 FROM t3"
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19 1 "SELECT DISTINCT c1 FROM t3"
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20 1 "SELECT DISTINCT * FROM t3"
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21 0 "SELECT DISTINCT c2 FROM t3"
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22 0 "SELECT DISTINCT * FROM (SELECT 1, 2, 3 UNION SELECT 4, 5, 6)"
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24 0 "SELECT DISTINCT rowid/2 FROM t1"
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25 1 "SELECT DISTINCT rowid/2, rowid FROM t1"
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26.1 0 "SELECT DISTINCT rowid/2, b FROM t1 WHERE c = ?"
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26.2 1 "SELECT DISTINCT rowid/2, b FROM t4 WHERE c = ?"
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} {
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if {$noop} {
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do_distinct_noop_test 1.$tn $sql
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} else {
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do_distinct_not_noop_test 1.$tn $sql
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}
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}
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#-------------------------------------------------------------------------
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# The following tests - distinct-2.* - test cases where an index is
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# used to deliver results in order of the DISTINCT expressions.
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#
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drop_all_tables
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do_execsql_test 2.0 {
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CREATE TABLE t1(a, b, c);
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CREATE INDEX i1 ON t1(a, b);
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CREATE INDEX i2 ON t1(b COLLATE nocase, c COLLATE nocase);
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INSERT INTO t1 VALUES('a', 'b', 'c');
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INSERT INTO t1 VALUES('A', 'B', 'C');
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INSERT INTO t1 VALUES('a', 'b', 'c');
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INSERT INTO t1 VALUES('A', 'B', 'C');
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}
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foreach {tn sql temptables res} {
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1 "a, b FROM t1" {} {A B a b}
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2 "b, a FROM t1" {} {B A b a}
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3 "a, b, c FROM t1" {hash} {A B C a b c}
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4 "a, b, c FROM t1 ORDER BY a, b, c" {btree} {A B C a b c}
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5 "b FROM t1 WHERE a = 'a'" {} {b}
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6 "b FROM t1 ORDER BY +b COLLATE binary" {btree hash} {B b}
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7 "a FROM t1" {} {A a}
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8 "b COLLATE nocase FROM t1" {} {b}
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9 "b COLLATE nocase FROM t1 ORDER BY b COLLATE nocase" {} {b}
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} {
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do_execsql_test 2.$tn.1 "SELECT DISTINCT $sql" $res
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do_temptables_test 2.$tn.2 "SELECT DISTINCT $sql" $temptables
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}
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do_execsql_test 2.A {
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SELECT (SELECT DISTINCT o.a FROM t1 AS i) FROM t1 AS o ORDER BY rowid;
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} {a A a A}
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do_test 3.0 {
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db eval {
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CREATE TABLE t3(a INTEGER, b INTEGER, c, UNIQUE(a,b));
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INSERT INTO t3 VALUES
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(null, null, 1),
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(null, null, 2),
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(null, 3, 4),
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(null, 3, 5),
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(6, null, 7),
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(6, null, 8);
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SELECT DISTINCT a, b FROM t3 ORDER BY +a, +b;
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}
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} {{} {} {} 3 6 {}}
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do_test 3.1 {
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regexp {OpenEphemeral} [db eval {
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EXPLAIN SELECT DISTINCT a, b FROM t3 ORDER BY +a, +b;
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}]
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} {0}
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#-------------------------------------------------------------------------
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# Ticket [fccbde530a6583bf2748400919f1603d5425995c] (2014-01-08)
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# The logic that computes DISTINCT sometimes thinks that a zeroblob()
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# and a blob of all zeros are different when they should be the same.
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#
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do_execsql_test 4.1 {
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DROP TABLE IF EXISTS t1;
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DROP TABLE IF EXISTS t2;
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CREATE TABLE t1(a INTEGER);
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INSERT INTO t1 VALUES(3);
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INSERT INTO t1 VALUES(2);
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INSERT INTO t1 VALUES(1);
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INSERT INTO t1 VALUES(2);
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INSERT INTO t1 VALUES(3);
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INSERT INTO t1 VALUES(1);
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CREATE TABLE t2(x);
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INSERT INTO t2
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SELECT DISTINCT
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CASE a WHEN 1 THEN x'0000000000'
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WHEN 2 THEN zeroblob(5)
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ELSE 'xyzzy' END
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FROM t1;
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SELECT quote(x) FROM t2 ORDER BY 1;
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} {'xyzzy' X'0000000000'}
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#----------------------------------------------------------------------------
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# Ticket [c5ea805691bfc4204b1cb9e9aa0103bd48bc7d34] (2014-12-04)
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# Make sure that DISTINCT works together with ORDER BY and descending
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# indexes.
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#
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do_execsql_test 5.1 {
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DROP TABLE IF EXISTS t1;
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CREATE TABLE t1(x);
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INSERT INTO t1(x) VALUES(3),(1),(5),(2),(6),(4),(5),(1),(3);
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CREATE INDEX t1x ON t1(x DESC);
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SELECT DISTINCT x FROM t1 ORDER BY x ASC;
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} {1 2 3 4 5 6}
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do_execsql_test 5.2 {
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SELECT DISTINCT x FROM t1 ORDER BY x DESC;
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} {6 5 4 3 2 1}
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do_execsql_test 5.3 {
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SELECT DISTINCT x FROM t1 ORDER BY x;
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} {1 2 3 4 5 6}
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do_execsql_test 5.4 {
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DROP INDEX t1x;
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CREATE INDEX t1x ON t1(x ASC);
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SELECT DISTINCT x FROM t1 ORDER BY x ASC;
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} {1 2 3 4 5 6}
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do_execsql_test 5.5 {
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SELECT DISTINCT x FROM t1 ORDER BY x DESC;
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} {6 5 4 3 2 1}
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do_execsql_test 5.6 {
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SELECT DISTINCT x FROM t1 ORDER BY x;
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} {1 2 3 4 5 6}
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#-------------------------------------------------------------------------
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# 2015-11-23. Problem discovered by Kostya Serebryany using libFuzzer
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#
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db close
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sqlite3 db :memory:
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do_execsql_test 6.1 {
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CREATE TABLE jjj(x);
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SELECT (SELECT 'mmm' UNION SELECT DISTINCT max(name) ORDER BY 1)
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FROM sqlite_master;
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} {jjj}
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do_execsql_test 6.2 {
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CREATE TABLE nnn(x);
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SELECT (SELECT 'mmm' UNION SELECT DISTINCT max(name) ORDER BY 1)
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FROM sqlite_master;
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} {mmm}
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#-------------------------------------------------------------------------
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# Ticket [9c944882]
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#
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reset_db
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do_execsql_test 7.0 {
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CREATE TABLE t1(a INTEGER PRIMARY KEY);
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CREATE TABLE t3(a INTEGER PRIMARY KEY);
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CREATE TABLE t4(x);
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CREATE TABLE t5(y);
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INSERT INTO t5 VALUES(1), (2), (2);
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INSERT INTO t1 VALUES(2);
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INSERT INTO t3 VALUES(2);
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INSERT INTO t4 VALUES(2);
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}
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do_execsql_test 7.1 {
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WITH t2(b) AS (
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SELECT DISTINCT y FROM t5 ORDER BY y
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)
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SELECT * FROM
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t4 CROSS JOIN t3 CROSS JOIN t1
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WHERE (t1.a=t3.a) AND (SELECT count(*) FROM t2 AS y WHERE t4.x!='abc')=t1.a
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} {2 2 2}
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# 2021-04-06 forum post https://sqlite.org/forum/forumpost/66954e9ece
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reset_db
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do_execsql_test 8.0 {
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CREATE TABLE person ( pid INT) ;
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CREATE UNIQUE INDEX idx ON person ( pid ) WHERE pid == 1;
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INSERT INTO person VALUES (1), (10), (10);
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SELECT DISTINCT pid FROM person where pid = 10;
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} {10}
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#-------------------------------------------------------------------------
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reset_db
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do_execsql_test 9.0 {
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CREATE TABLE t1(a, b);
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INSERT INTO t1 VALUES('a', 'a');
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INSERT INTO t1 VALUES('a', 'b');
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INSERT INTO t1 VALUES('a', 'c');
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INSERT INTO t1 VALUES('b', 'a');
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INSERT INTO t1 VALUES('b', 'b');
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INSERT INTO t1 VALUES('b', 'c');
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INSERT INTO t1 VALUES('a', 'a');
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INSERT INTO t1 VALUES('b', 'b');
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INSERT INTO t1 VALUES('A', 'A');
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INSERT INTO t1 VALUES('B', 'B');
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}
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foreach {tn idx} {
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1 { }
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2 { CREATE INDEX i1 ON t1(a, b); }
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3 { CREATE INDEX i1 ON t1(b, a); }
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4 { CREATE INDEX i1 ON t1(a COLLATE nocase, b COLLATE nocase); }
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5 { CREATE INDEX i1 ON t1(b COLLATE nocase, a COLLATE nocase); }
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} {
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execsql { DROP INDEX IF EXISTS i1 }
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execsql $idx
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do_execsql_test 9.$tn.1 {
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SELECT DISTINCT a, b FROM t1 ORDER BY a, b
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} {
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A A B B
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a a a b a c
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b a b b b c
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}
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do_execsql_test 9.$tn.1 {
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SELECT DISTINCT a COLLATE nocase, b COLLATE nocase FROM t1
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ORDER BY a COLLATE nocase, b COLLATE nocase
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} {
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a a a b a c
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b a b b b c
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}
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}
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# 2023-03-16
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# https://sqlite.org/forum/forumpost/16ce2bb7a639e29b
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# ticket c36cdb4afd504dc1
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# ticket 4051a7f931d9ba24
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# ticket d6fd512f50513ab7
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#
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do_execsql_test 10.1 {
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SELECT DISTINCT
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1
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ORDER BY
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x';
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} {1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1}
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do_execsql_test 10.2 {
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EXPLAIN
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SELECT DISTINCT
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1
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ORDER BY
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x','x','x','x','x','x','x',
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'x','x','x','x';
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} {/0 Init 0 /}
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do_execsql_test 10.3 {
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EXPLAIN CREATE TABLE t2 AS SELECT DISTINCT ':memory:', 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 ORDER BY '%J%j%w%s', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', '%J%j%w%s', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 42e-300, 'unixepoch', 'unixepoch', 'unixepoch' LIMIT 0xda;
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} {/0 Init 0/}
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do_execsql_test 10.4 {
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DROP TABLE IF EXISTS t0;
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CREATE TABLE t0 AS SELECT DISTINCT 0xda, 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 0xda-0xda-42e-300, 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0', 'lit0' ORDER BY '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%Y-%m-%d', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', 'lit0', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', 'auto', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', ':memory:', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '%%', '';
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SELECT count(*) FROM t0;
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} {1}
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do_execsql_test 10.5 {
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DROP TABLE IF EXISTS t2;
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CREATE TABLE t2 AS SELECT DISTINCT ':memory:', 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 0.0*7/0, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 ORDER BY '%J%j%w%s', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', '%J%j%w%s', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 'unixepoch', 42e-300, 'unixepoch', 'unixepoch', 'unixepoch' LIMIT 0xda;
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SELECT count(*) FROM t2;
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} {1}
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finish_test
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