MDEV-36441 MDEV-35452 Fix extra spider_same_server_link warnings in view-protocol

With --view-protocol, mtr transforms a SELECT query to two queries:

1. CREATE OR REPLACE VIEW mysqltest_tmp_v AS ...
2. SELECT * FROM mysqltest_tmp_v

where ... is the original query. Further mtr may run the first query
in a separate connection.

On the other hand if the data node is the same as the spider node,
spider_same_server_link is required for connection to the data node.

Therefore, for mtr --view-protocol tests often spider_same_server_link
needs to be set on both session and global levels. In this patch we
add the missing "SET GLOBAL spider_same_server_link=1" queries to
tests that fail with wrong results due to this issue.

It does not fix --view-protocol for all the affected tests, because
there are other issues fixed in subsequent patches.

storage/spider/mysql-test/spider/bugfix/r/mdev_26345.result

@@ -5,6 +5,7 @@ for child3
 MDEV-26345 SELECT MIN on Spider table returns more rows than expected
 
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 create table t2 (a int, b int, PRIMARY KEY (a, b));

storage/spider/mysql-test/spider/bugfix/r/mdev_29002.result

@@ -2,6 +2,7 @@ for master_1
 for child2
 for child3
 SET spider_same_server_link= on;
+SET global spider_same_server_link= on;
 CREATE SERVER s FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t (a INT);

storage/spider/mysql-test/spider/bugfix/r/mdev_29163.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 CREATE SERVER s FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t1 (a INT);
 CREATE TABLE t2 (b INT);

storage/spider/mysql-test/spider/bugfix/r/mdev_29502.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 CREATE SERVER $srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t (a INT);
 INSERT INTO t VALUES (23),(48);

storage/spider/mysql-test/spider/bugfix/r/mdev_29962.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t (c INT) ENGINE=InnoDB;

storage/spider/mysql-test/spider/bugfix/r/mdev_30392.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t1 (a INT);
 INSERT INTO t1 VALUES (1),(2);

storage/spider/mysql-test/spider/bugfix/r/mdev_30408.result

@@ -3,6 +3,7 @@ for child2
 for child3
 set @@optimizer_switch="semijoin=off";
 set spider_same_server_link= 1;
+set global spider_same_server_link=1;
 CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 create table ten(a int primary key);

storage/spider/mysql-test/spider/bugfix/r/mdev_31338.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t (c BLOB) ENGINE=InnoDB;
 CREATE TABLE ts (c BLOB) ENGINE=Spider COMMENT='WRAPPER "mysql",srv "srv",TABLE "t"';

storage/spider/mysql-test/spider/bugfix/r/mdev_31645.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t1 ( a bigint(20) NOT NULL, b bigint(20) DEFAULT 0, PRIMARY KEY (a));
 CREATE TABLE t2 ( a bigint(20) NOT NULL, b bigint(20) DEFAULT 0, PRIMARY KEY (a)) ENGINE=SPIDER COMMENT='srv "srv", WRAPPER "mysql", TABLE "t1"';

storage/spider/mysql-test/spider/bugfix/r/mdev_34003.result

@@ -2,6 +2,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 create table t2 (c INT KEY,c1 BLOB,c2 TEXT) ENGINE=InnoDB;

storage/spider/mysql-test/spider/bugfix/r/mdev_35874.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t1 (c6 decimal(6,0)) ENGINE=InnoDB;

storage/spider/mysql-test/spider/bugfix/r/subquery.result

@@ -5,6 +5,7 @@ for master_1
 for child2
 for child3
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 create table t1 (c1 int);
 create table t2 (c2 int);

storage/spider/mysql-test/spider/bugfix/t/mdev_26345.test

@@ -11,6 +11,7 @@
 --echo
 
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 

storage/spider/mysql-test/spider/bugfix/t/mdev_29002.test

@@ -4,6 +4,7 @@
 --enable_result_log
 --enable_query_log
 SET spider_same_server_link= on;
+SET global spider_same_server_link= on;
 evalp CREATE SERVER s FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 

storage/spider/mysql-test/spider/bugfix/t/mdev_29163.test

@@ -7,6 +7,7 @@
 --enable_result_log
 --enable_query_log
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 evalp CREATE SERVER s FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 
 CREATE TABLE t1 (a INT);

storage/spider/mysql-test/spider/bugfix/t/mdev_29502.test

@@ -9,6 +9,7 @@
 --enable_query_log
 
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 --let $srv=srv_mdev_29502
 evalp CREATE SERVER $srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 

storage/spider/mysql-test/spider/bugfix/t/mdev_29962.test

@@ -8,6 +8,7 @@
 --enable_query_log
 
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 

storage/spider/mysql-test/spider/bugfix/t/mdev_30392.test

@@ -7,6 +7,7 @@
 --enable_result_log
 --enable_query_log
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 
 CREATE TABLE t1 (a INT);

storage/spider/mysql-test/spider/bugfix/t/mdev_30408.test

@@ -6,6 +6,7 @@
 
 set @@optimizer_switch="semijoin=off";
 set spider_same_server_link= 1;
+set global spider_same_server_link=1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 

storage/spider/mysql-test/spider/bugfix/t/mdev_31338.test

@@ -10,6 +10,7 @@
 --enable_query_log
 
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 CREATE TABLE t (c BLOB) ENGINE=InnoDB;
 CREATE TABLE ts (c BLOB) ENGINE=Spider COMMENT='WRAPPER "mysql",srv "srv",TABLE "t"';

storage/spider/mysql-test/spider/bugfix/t/mdev_31645.test

@@ -7,6 +7,7 @@
 --enable_result_log
 --enable_query_log
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 
 CREATE TABLE t1 ( a bigint(20) NOT NULL, b bigint(20) DEFAULT 0, PRIMARY KEY (a));

storage/spider/mysql-test/spider/bugfix/t/mdev_34003.test

@@ -4,6 +4,7 @@
 --enable_result_log
 --enable_query_log
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 create table t2 (c INT KEY,c1 BLOB,c2 TEXT) ENGINE=InnoDB;

storage/spider/mysql-test/spider/bugfix/t/mdev_35874.test

@@ -9,6 +9,7 @@
 --enable_query_log
 --source include/have_innodb.inc
 set spider_same_server_link= 1;
+set global spider_same_server_link= 1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER mysql
 OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 

storage/spider/mysql-test/spider/bugfix/t/subquery.test

@@ -7,6 +7,7 @@
 --enable_result_log
 --enable_query_log
 set spider_same_server_link=1;
+set global spider_same_server_link=1;
 evalp CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET "$MASTER_1_MYSOCK", DATABASE 'test',user 'root');
 create table t1 (c1 int);
 create table t2 (c2 int);