Fix for MDEV-3948, and backport of the following collection of fixes and backports

from MariaDB 10.0.
  
The bug in mdev-3948 was an instance of the problem fixed by Sergey's patch
in 10.0 - namely that the range optimizer could change table->[read | write]_set,
and not restore it.
  
revno: 3471
committer: Sergey Petrunya <psergey@askmonty.org>
branch nick: 10.0-serg-fix-imerge
timestamp: Sat 2012-11-03 12:24:36 +0400
message:
  # MDEV-3817: Wrong result with index_merge+index_merge_intersection, InnoDB table, join, AND and OR conditions
  Reconcile the fixes from:
  #
  # guilhem.bichot@oracle.com-20110805143029-ywrzuz15uzgontr0
  # Fix for BUG#12698916 - "JOIN QUERY GIVES WRONG RESULT AT 2ND EXEC. OR
  # AFTER FLUSH TABLES [-INT VS NULL]"
  #
  # guilhem.bichot@oracle.com-20111209150650-tzx3ldzxe1yfwji6
  # Fix for BUG#12912171 - ASSERTION FAILED: QUICK->HEAD->READ_SET == SAVE_READ_SET
  # and
  #
  and related fixes from: BUG#1006164, MDEV-376:
  
  Now, ROR-merged QUICK_RANGE_SELECT objects make no assumptions about the values
  of table->read_set and table->write_set.
  Each QUICK_ROR_SELECT has (and had before) its own column bitmap, but now, all 
  QUICK_ROR_SELECT's functions that care: reset(), init_ror_merged_scan(), and 
  get_next()  will set table->read_set when invoked and restore it back to what 
  it was before the call before they return.

  This allows to avoid the mess when somebody else modifies table->read_set for 
  some reason.

1 files changed, 55 insertions, 0 deletions

diff --git a/mysql-test/t/range.test b/mysql-test/t/range.test
index 6ac883ffcc1..a5ff9cc0096 100644
--- a/mysql-test/t/range.test
+++ b/mysql-test/t/range.test
@@ -1,6 +1,7 @@
 #
 # Problem with range optimizer
 #
+--source include/have_innodb.inc
 
 --disable_warnings
 drop table if exists t1, t2, t3, t10, t100;
@@ -1549,3 +1550,57 @@ SELECT * FROM t1 ignore index(d) WHERE d = 'q' OR d >= 'q' OR (d IN ( 'j' , 's'
 SELECT * FROM t1 force index(d)  WHERE d = 'q' OR d >= 'q' OR (d IN ( 'j' , 's' , 'i' ) AND ( b = 102 ));
 
 DROP TABLE t1;
+
+--disable_parsing
+# MariaDB: Moved the following to partition.test
+--echo #
+--echo # BUG#12912171 - ASSERTION FAILED: QUICK->HEAD->READ_SET ==
+--echo # SAVE_READ_SET
+--echo #
+CREATE TABLE t1 (
+ a INT,
+ b INT,
+ c INT,
+ PRIMARY KEY (c,a), KEY (a),KEY (a)
+) ENGINE=INNODB PARTITION BY KEY () PARTITIONS 2;
+INSERT INTO t1 VALUES (1,5,1),(2,4,1),(3,3,1),(4,2,1),(5,1,1);
+UPDATE t1 SET b = 0, c=1 WHERE a <=>0;
+SELECT * FROM t1;
+DROP TABLE t1;
+--enable_parsing
+
+--echo #
+--echo # BUG#13256446 - ASSERTION QUICK->HEAD->READ_SET ==
+--echo # SAVE_READ_SET' FAILED IN OPT_RANGE.CC:1606 
+--echo #
+CREATE TABLE t1 (
+ f1 INT AUTO_INCREMENT,
+ f2 INT,
+ f3 INT,
+ f4 INT,
+ PRIMARY KEY (f1),KEY(f2)
+) ENGINE=INNODB;
+CREATE ALGORITHM=MERGE VIEW v2 AS SELECT f1,f2,f3,f4 FROM t1 WHERE f2=103;
+INSERT INTO t1 VALUES (154,0,NULL,0),(0,NULL,9,0),
+ (NULL,102,NULL,3),(0,3,NULL,0), (9,0,NULL,0),(0,9,NULL,157);
+SELECT * FROM v2;
+UPDATE v2 SET f4=0, f2=NULL, f1=NULL WHERE f1 > 16 ORDER BY f1;
+SELECT * FROM v2;
+DROP TABLE t1;
+DROP VIEW v2;
+
+CREATE TABLE t1 (
+ f1 INT AUTO_INCREMENT,
+ f2 INT,
+ f3 INT,
+ f4 INT,
+ PRIMARY KEY (f1),KEY(f2)
+) ENGINE=INNODB;
+INSERT INTO t1 VALUES(1,NULL,NULL,0), (2,2,0,3), (9,0,107,18),
+ (10,0,0,0), (231,0,0,0), (232,0,8,0), (234,0,0,NULL), (235,8,0,3);
+CREATE ALGORITHM=MERGE VIEW v3 AS SELECT f1,f2,f3,f4 FROM t1 WHERE f1<=85 ;
+SELECT * FROM v3;
+UPDATE v3 SET f3=0, f4=4 WHERE f2=68 ORDER BY f1; 
+SELECT * FROM v3;
+DROP TABLE t1;
+DROP VIEW v3;