Merge 10.2 into 10.3

1 files changed, 368 insertions, 0 deletions

diff --git a/mysql-test/main/derived_cond_pushdown.result b/mysql-test/main/derived_cond_pushdown.result
index 832b9a46289..51a4703d5d4 100644
--- a/mysql-test/main/derived_cond_pushdown.result
+++ b/mysql-test/main/derived_cond_pushdown.result
@@ -16027,6 +16027,374 @@ a
 aa
 DROP FUNCTION f1;
 #
+# MDEV-17011: condition pushdown into materialized derived used
+#             in INSERT SELECT, multi-table UPDATE and DELETE
+#
+CREATE TABLE t1 (a int ,b int) ENGINE=MyISAM;
+INSERT INTO t1 VALUES
+(1, 1), (1, 2), (2, 1), (2, 2), (3,1), (3,3), (4,2);
+CREATE TABLE t2 (a int) ENGINE MYISAM;
+INSERT INTO t2 VALUES
+(3), (7), (1), (4), (1);
+CREATE TABLE t3 (a int, b int) ENGINE MYISAM;
+EXPLAIN FORMAT=JSON INSERT INTO t3
+SELECT * FROM (SELECT a, count(*) as c FROM t1 GROUP BY a) t WHERE a<=2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 7,
+      "filtered": 100,
+      "attached_condition": "t.a <= 2",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "t1.a",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 7,
+                "filtered": 100,
+                "attached_condition": "t1.a <= 2"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+INSERT INTO t3
+SELECT * FROM (SELECT a, count(*) as c FROM t1 GROUP BY a) t WHERE a<=2;
+SELECT * FROM t3;
+a	b
+1	2
+2	2
+EXPLAIN FORMAT=JSON UPDATE t2, (SELECT a, count(*) as c FROM t1 GROUP BY a) t SET t2.a=t.c+10
+WHERE t2.a= t.c and t.a>=3;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 5,
+      "filtered": 100,
+      "attached_condition": "t2.a is not null"
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ref",
+      "possible_keys": ["key0"],
+      "key": "key0",
+      "key_length": "8",
+      "used_key_parts": ["c"],
+      "ref": ["test.t2.a"],
+      "rows": 2,
+      "filtered": 100,
+      "attached_condition": "t2.a = t.c and t.a >= 3",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "filesort": {
+            "sort_key": "t1.a",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 7,
+                "filtered": 100,
+                "attached_condition": "t1.a >= 3"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+UPDATE t2, (SELECT a, count(*) as c FROM t1 GROUP BY a) t SET t2.a=t.c+10
+WHERE t2.a= t.c and t.a>=3;
+SELECT * FROM t2;
+a
+3
+7
+11
+4
+11
+EXPLAIN FORMAT=JSON DELETE t2 FROM t2, (SELECT a, count(*) as c FROM t1 GROUP BY a) t
+WHERE t2.a= t.c+9 and t.a=2;
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "t2",
+      "access_type": "ALL",
+      "rows": 5,
+      "filtered": 100
+    },
+    "table": {
+      "table_name": "<derived2>",
+      "access_type": "ALL",
+      "rows": 7,
+      "filtered": 100,
+      "attached_condition": "t.a = 2 and t2.a = t.c + 9",
+      "materialized": {
+        "query_block": {
+          "select_id": 2,
+          "table": {
+            "table_name": "t1",
+            "access_type": "ALL",
+            "rows": 7,
+            "filtered": 100,
+            "attached_condition": "t1.a = 2"
+          }
+        }
+      }
+    }
+  }
+}
+DELETE t2 FROM t2, (SELECT a, count(*) as c FROM t1 GROUP BY a) t
+WHERE t2.a= t.c+9 and t.a=2;
+SELECT * FROM t2;
+a
+3
+7
+4
+DROP TABLE t1,t2,t3;
+#
+# MDEV-16765: pushdown condition with the CASE structure
+#             defined with Item_cond item
+#
+CREATE TABLE t1(a INT, b INT);
+INSERT INTO t1 VALUES (1,2), (3,4), (2,3);
+SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.max_a=1) OR (tab2.max_a=2))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+max_a	b
+1	2
+1	3
+EXPLAIN FORMAT=JSON SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.max_a=1) OR (tab2.max_a=2))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "case when (tab2.max_a = 1 or tab2.max_a = 2) then 1 else 0 end = 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "case when (max_a = 1 or max_a = 2) then 1 else 0 end = 1",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 3,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.max_a=1) OR ((tab2.max_a>2) AND (tab2.max_a<4)))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+max_a	b
+1	2
+1	4
+EXPLAIN FORMAT=JSON SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.max_a=1) OR ((tab2.max_a>2) AND (tab2.max_a<4)))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "case when (tab2.max_a = 1 or tab2.max_a > 2 and tab2.max_a < 4) then 1 else 0 end = 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "case when (max_a = 1 or max_a > 2 and max_a < 4) then 1 else 0 end = 1",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 3,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.max_a>1) AND ((tab2.max_a=2) OR (tab2.max_a>2)))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+max_a	b
+1	3
+1	4
+EXPLAIN FORMAT=JSON SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.max_a>1) AND ((tab2.max_a=2) OR (tab2.max_a>2)))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "case when (tab2.max_a > 1 and (tab2.max_a = 2 or tab2.max_a > 2)) then 1 else 0 end = 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "having_condition": "case when (max_a > 1 and (max_a = 2 or max_a > 2)) then 1 else 0 end = 1",
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 3,
+                "filtered": 100
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.b=2) OR (tab2.b=4))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+max_a	b
+1	2
+1	4
+EXPLAIN FORMAT=JSON SELECT *
+FROM
+(
+SELECT CASE WHEN ((tab2.b=2) OR (tab2.b=4))
+THEN 1 ELSE 0 END AS max_a,b
+FROM (SELECT MAX(a) as max_a,b FROM t1 GROUP BY t1.b) AS tab2
+) AS tab1
+WHERE (tab1.max_a=1);
+EXPLAIN
+{
+  "query_block": {
+    "select_id": 1,
+    "table": {
+      "table_name": "<derived3>",
+      "access_type": "ALL",
+      "rows": 3,
+      "filtered": 100,
+      "attached_condition": "case when (tab2.b = 2 or tab2.b = 4) then 1 else 0 end = 1",
+      "materialized": {
+        "query_block": {
+          "select_id": 3,
+          "filesort": {
+            "sort_key": "t1.b",
+            "temporary_table": {
+              "table": {
+                "table_name": "t1",
+                "access_type": "ALL",
+                "rows": 3,
+                "filtered": 100,
+                "attached_condition": "case when (t1.b = 2 or t1.b = 4) then 1 else 0 end = 1"
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+DROP TABLE t1;
+#
+# MDEV-16803: pushdown condition with IN predicate in the derived table
+#             defined with several SELECT statements
+#
+CREATE TABLE t1 (a INT, b INT);
+INSERT INTO t1 VALUES (1,2),(3,2),(1,1);
+SELECT * FROM
+(
+SELECT a,b,1 as c
+FROM t1
+UNION ALL
+SELECT a,b,2 as c
+FROM t1
+) AS tab
+WHERE ((a,b) IN ((1,2),(3,2)));
+a	b	c
+1	2	1
+3	2	1
+1	2	2
+3	2	2
+DROP TABLE t1;
+# Start of 10.3 tests
+#
 # MDEV-16801: splittable materialized derived/views with
 #             one grouping field from table without keys
 #