[sql] Import reference version of SQLite 3.8.7.4.

third_party/sqlite/sqlite-src-3080704/test/minmax4.test

+# 2012 February 02
+#
+# 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 for queries of the form:  
+#
+#    SELECT p, max(q) FROM t1;
+#
+# Demonstration that the value returned for p is on the same row as 
+# the maximum q.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !compound {
+  finish_test
+  return
+}
+
+do_test minmax4-1.1 {
+  db eval {
+    CREATE TABLE t1(p,q);
+    SELECT p, max(q) FROM t1;
+  }
+} {{} {}}
+do_test minmax4-1.2 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+  }
+} {{} {}}
+do_test minmax4-1.3 {
+  db eval {
+    INSERT INTO t1 VALUES(1,2);
+    SELECT p, max(q) FROM t1;
+  }
+} {1 2}
+do_test minmax4-1.4 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+  }
+} {1 2}
+do_test minmax4-1.5 {
+  db eval {
+    INSERT INTO t1 VALUES(3,4);
+    SELECT p, max(q) FROM t1;
+  }
+} {3 4}
+do_test minmax4-1.6 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+    SELECT p FROM (SELECT p, min(q) FROM t1);
+  }
+} {1 2 1}
+do_test minmax4-1.7 {
+  db eval {
+    INSERT INTO t1 VALUES(5,0);
+    SELECT p, max(q) FROM t1;
+    SELECT p FROM (SELECT max(q), p FROM t1);
+  }
+} {3 4 3}
+do_test minmax4-1.8 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+  }
+} {5 0}
+do_test minmax4-1.9 {
+  db eval {
+    INSERT INTO t1 VALUES(6,1);
+    SELECT p, max(q) FROM t1;
+    SELECT p FROM (SELECT max(q), p FROM t1);
+  }
+} {3 4 3}
+do_test minmax4-1.10 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+  }
+} {5 0}
+do_test minmax4-1.11 {
+  db eval {
+    INSERT INTO t1 VALUES(7,NULL);
+    SELECT p, max(q) FROM t1;
+  }
+} {3 4}
+do_test minmax4-1.12 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+  }
+} {5 0}
+do_test minmax4-1.13 {
+  db eval {
+    DELETE FROM t1 WHERE q IS NOT NULL;
+    SELECT p, max(q) FROM t1;
+  }
+} {7 {}}
+do_test minmax4-1.14 {
+  db eval {
+    SELECT p, min(q) FROM t1;
+  }
+} {7 {}}
+
+do_test minmax4-2.1 {
+  db eval {
+    CREATE TABLE t2(a,b,c);
+    INSERT INTO t2 VALUES
+         (1,null,2),
+         (1,2,3),
+         (1,1,4),
+         (2,3,5);
+    SELECT a, max(b), c FROM t2 GROUP BY a ORDER BY a;
+  }
+} {1 2 3 2 3 5}
+do_test minmax4-2.2 {
+  db eval {
+    SELECT a, min(b), c FROM t2 GROUP BY a ORDER BY a;
+  }
+} {1 1 4 2 3 5}
+do_test minmax4-2.3 {
+  db eval {
+    SELECT a, min(b), avg(b), count(b), c FROM t2 GROUP BY a ORDER BY a DESC;
+  }
+} {2 3 3.0 1 5 1 1 1.5 2 4}
+do_test minmax4-2.4 {
+  db eval {
+    SELECT a, min(b), max(b), c FROM t2 GROUP BY a ORDER BY a;
+  }
+} {1 1 2 3 2 3 3 5}
+do_test minmax4-2.5 {
+  db eval {
+    SELECT a, max(b), min(b), c FROM t2 GROUP BY a ORDER BY a;
+  }
+} {1 2 1 4 2 3 3 5}
+do_test minmax4-2.6 {
+  db eval {
+    SELECT a, max(b), b, max(c), c FROM t2 GROUP BY a ORDER BY a;
+  }
+} {1 2 1 4 4 2 3 3 5 5}
+do_test minmax4-2.7 {
+  db eval {
+    SELECT a, min(b), b, min(c), c FROM t2 GROUP BY a ORDER BY a;
+  }
+} {1 1 {} 2 2 2 3 3 5 5}
+
+
+
+finish_test