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third_party/sqlite/src/test/minmax3.test

Index: third_party/sqlite/src/test/minmax3.test
diff --git a/third_party/sqlite/src/test/minmax3.test b/third_party/sqlite/src/test/minmax3.test
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+# 2008 January 5
+#
+# 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.
+#
+#***********************************************************************
+# $Id: minmax3.test,v 1.5 2008/07/12 14:52:20 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Do not use a codec for tests in this file, as the database file is
+# manipulated directly using tcl scripts (using the [hexio_write] command).
+#
+do_not_use_codec
+
+# Do an SQL statement.  Append the search count to the end of the result.
+#
+proc count sql {
+  set ::sqlite_search_count 0
+  return [concat [execsql $sql] $::sqlite_search_count]
+}
+
+# This procedure sets the value of the file-format in file 'test.db'
+# to $newval. Also, the schema cookie is incremented.
+# 
+proc set_file_format {newval} {
+  hexio_write test.db 44 [hexio_render_int32 $newval]
+  set schemacookie [hexio_get_int [hexio_read test.db 40 4]]
+  incr schemacookie
+  hexio_write test.db 40 [hexio_render_int32 $schemacookie]
+  return {}
+}
+
+do_test minmax3-1.0 {
+  execsql {
+    CREATE TABLE t1(x, y, z);
+  }
+  db close
+  set_file_format 4
+  sqlite3 db test.db
+  execsql {
+    BEGIN;
+    INSERT INTO t1 VALUES('1', 'I',   'one');
+    INSERT INTO t1 VALUES('2', 'IV',  'four');
+    INSERT INTO t1 VALUES('2', NULL,  'three');
+    INSERT INTO t1 VALUES('2', 'II',  'two');
+    INSERT INTO t1 VALUES('2', 'V',   'five');
+    INSERT INTO t1 VALUES('3', 'VI',  'six');
+    COMMIT;
+    PRAGMA automatic_index=OFF;
+  }
+} {}
+do_test minmax3-1.1.1 {
+  # Linear scan.
+  count { SELECT max(y) FROM t1 WHERE x = '2'; }
+} {V 5}
+do_test minmax3-1.1.2 {
+  # Index optimizes the WHERE x='2' constraint.
+  execsql { CREATE INDEX i1 ON t1(x) }
+  count   { SELECT max(y) FROM t1 WHERE x = '2'; }
+} {V 9}
+do_test minmax3-1.1.3 {
+  # Index optimizes the WHERE x='2' constraint and the MAX(y).
+  execsql { CREATE INDEX i2 ON t1(x,y) }
+  count   { SELECT max(y) FROM t1 WHERE x = '2'; }
+} {V 1}
+do_test minmax3-1.1.4 {
+  # Index optimizes the WHERE x='2' constraint and the MAX(y).
+  execsql { DROP INDEX i2 ; CREATE INDEX i2 ON t1(x, y DESC) }
+  count   { SELECT max(y) FROM t1 WHERE x = '2'; }
+} {V 1}
+do_test minmax3-1.1.5 {
+  count   { SELECT max(y) FROM t1 WHERE x = '2' AND y != 'V'; }
+} {IV 2}
+do_test minmax3-1.1.6 {
+  count   { SELECT max(y) FROM t1 WHERE x = '2' AND y < 'V'; }
+} {IV 1}
+do_test minmax3-1.1.6 {
+  count   { SELECT max(y) FROM t1 WHERE x = '2' AND z != 'five'; }
+} {IV 4}
+
+do_test minmax3-1.2.1 {
+  # Linear scan of t1.
+  execsql { DROP INDEX i1 ; DROP INDEX i2 }
+  count { SELECT min(y) FROM t1 WHERE x = '2'; }
+} {II 5}
+do_test minmax3-1.2.2 {
+  # Index i1 optimizes the WHERE x='2' constraint.
+  execsql { CREATE INDEX i1 ON t1(x) }
+  count   { SELECT min(y) FROM t1 WHERE x = '2'; }
+} {II 9}
+do_test minmax3-1.2.3 {
+  # Index i2 optimizes the WHERE x='2' constraint and the min(y).
+  execsql { CREATE INDEX i2 ON t1(x,y) }
+  count   { SELECT min(y) FROM t1 WHERE x = '2'; }
+} {II 1}
+do_test minmax3-1.2.4 {
+  # Index optimizes the WHERE x='2' constraint and the MAX(y).
+  execsql { DROP INDEX i2 ; CREATE INDEX i2 ON t1(x, y DESC) }
+  count   { SELECT min(y) FROM t1 WHERE x = '2'; }
+} {II 1}
+
+do_test minmax3-1.3.1 {
+  # Linear scan
+  execsql { DROP INDEX i1 ; DROP INDEX i2 }
+  count   { SELECT min(y) FROM t1; }
+} {I 5}
+do_test minmax3-1.3.2 {
+  # Index i1 optimizes the min(y)
+  execsql { CREATE INDEX i1 ON t1(y) }
+  count   { SELECT min(y) FROM t1; }
+} {I 1}
+do_test minmax3-1.3.3 {
+  # Index i1 optimizes the min(y)
+  execsql { DROP INDEX i1 ; CREATE INDEX i1 ON t1(y DESC) }
+  count   { SELECT min(y) FROM t1; }
+} {I 1}
+
+do_test minmax3-1.4.1 {
+  # Linear scan
+  execsql { DROP INDEX i1 }
+  count   { SELECT max(y) FROM t1; }
+} {VI 5}
+do_test minmax3-1.4.2 {
+  # Index i1 optimizes the max(y)
+  execsql { CREATE INDEX i1 ON t1(y) }
+  count   { SELECT max(y) FROM t1; }
+} {VI 0}
+do_test minmax3-1.4.3 {
+  # Index i1 optimizes the max(y)
+  execsql { DROP INDEX i1 ; CREATE INDEX i1 ON t1(y DESC) }
+  execsql   { SELECT y from t1}
+  count   { SELECT max(y) FROM t1; }
+} {VI 0}
+do_test minmax3-1.4.4 {
+  execsql { DROP INDEX i1 }
+} {}
+
+do_test minmax3-2.1 {
+  execsql {
+    CREATE TABLE t2(a, b);
+    CREATE INDEX i3 ON t2(a, b);
+    INSERT INTO t2 VALUES(1, NULL);
+    INSERT INTO t2 VALUES(1, 1);
+    INSERT INTO t2 VALUES(1, 2);
+    INSERT INTO t2 VALUES(1, 3);
+    INSERT INTO t2 VALUES(2, NULL);
+    INSERT INTO t2 VALUES(2, 1);
+    INSERT INTO t2 VALUES(2, 2);
+    INSERT INTO t2 VALUES(2, 3);
+    INSERT INTO t2 VALUES(3, 1);
+    INSERT INTO t2 VALUES(3, 2);
+    INSERT INTO t2 VALUES(3, 3);
+  }
+} {}
+do_test minmax3-2.2 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1; }
+} {1}
+do_test minmax3-2.3 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>1; }
+} {2}
+do_test minmax3-2.4 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>-1; }
+} {1}
+do_test minmax3-2.5 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1; }
+} {1}
+do_test minmax3-2.6 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<2; }
+} {1}
+do_test minmax3-2.7 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<1; }
+} {{}}
+do_test minmax3-2.8 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 3 AND b<1; }
+} {{}}
+
+do_test minmax3-3.1 {
+  execsql {
+    DROP TABLE t2;
+    CREATE TABLE t2(a, b);
+    CREATE INDEX i3 ON t2(a, b DESC);
+    INSERT INTO t2 VALUES(1, NULL);
+    INSERT INTO t2 VALUES(1, 1);
+    INSERT INTO t2 VALUES(1, 2);
+    INSERT INTO t2 VALUES(1, 3);
+    INSERT INTO t2 VALUES(2, NULL);
+    INSERT INTO t2 VALUES(2, 1);
+    INSERT INTO t2 VALUES(2, 2);
+    INSERT INTO t2 VALUES(2, 3);
+    INSERT INTO t2 VALUES(3, 1);
+    INSERT INTO t2 VALUES(3, 2);
+    INSERT INTO t2 VALUES(3, 3);
+  }
+} {}
+do_test minmax3-3.2 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1; }
+} {1}
+do_test minmax3-3.3 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>1; }
+} {2}
+do_test minmax3-3.4 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b>-1; }
+} {1}
+do_test minmax3-3.5 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1; }
+} {1}
+do_test minmax3-3.6 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<2; }
+} {1}
+do_test minmax3-3.7 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 1 AND b<1; }
+} {{}}
+do_test minmax3-3.8 {
+  execsql { SELECT min(b) FROM t2 WHERE a = 3 AND b<1; }
+} {{}}
+
+do_test minmax3-4.1 {
+  execsql {
+    CREATE TABLE t4(x);
+    INSERT INTO t4 VALUES('abc');
+    INSERT INTO t4 VALUES('BCD');
+    SELECT max(x) FROM t4;
+  }
+} {abc}
+do_test minmax3-4.2 {
+  execsql {
+    SELECT max(x COLLATE nocase) FROM t4;
+  }
+} {BCD}
+do_test minmax3-4.3 {
+  execsql {
+    SELECT max(x), max(x COLLATE nocase) FROM t4;
+  }
+} {abc BCD}
+do_test minmax3-4.4 {
+  execsql {
+    SELECT max(x COLLATE binary), max(x COLLATE nocase) FROM t4;
+  }
+} {abc BCD}
+do_test minmax3-4.5 {
+  execsql {
+    SELECT max(x COLLATE nocase), max(x COLLATE rtrim) FROM t4;
+  }
+} {BCD abc}
+do_test minmax3-4.6 {
+  execsql {
+    SELECT max(x COLLATE nocase), max(x) FROM t4;
+  }
+} {BCD abc}
+do_test minmax3-4.10 {
+  execsql {
+    SELECT min(x) FROM t4;
+  }
+} {BCD}
+do_test minmax3-4.11 {
+  execsql {
+    SELECT min(x COLLATE nocase) FROM t4;
+  }
+} {abc}
+do_test minmax3-4.12 {
+  execsql {
+    SELECT min(x), min(x COLLATE nocase) FROM t4;
+  }
+} {BCD abc}
+do_test minmax3-4.13 {
+  execsql {
+    SELECT min(x COLLATE binary), min(x COLLATE nocase) FROM t4;
+  }
+} {BCD abc}
+do_test minmax3-4.14 {
+  execsql {
+    SELECT min(x COLLATE nocase), min(x COLLATE rtrim) FROM t4;
+  }
+} {abc BCD}
+do_test minmax3-4.15 {
+  execsql {
+    SELECT min(x COLLATE nocase), min(x) FROM t4;
+  }
+} {abc BCD}
+
+
+finish_test