Edit File: sql_max_join_size_func.test
############# mysql-test\t\sql_max_join_size_func.test #################### # # # Variable Name: sql_max_join_size # # Scope: GLOBAL & SESSION # # Access Type: Dynamic # # Data Type: BOOLEAN # # Default Value: 4294967295 # # Values: 1-4294967295 # # # # # # Creation Date: 2008-02-25 # # Author: Sharique Abdullah # # # # Description: Test Cases of Dynamic System Variable "sql_max_join_size" # # that checks behavior of this variable in the following ways# # * Functionality based on different values # # # # Reference: http://dev.mysql.com/doc/refman/5.1/en/server-system # # -variables.html#option_mysqld_max_join_size # # # ########################################################################### --echo ** Setup ** # # Setup # SET @session_max_join_size = @@SESSION.sql_max_join_size; SET @global_max_join_size = @@GLOBAL.sql_max_join_size; SET @session_sql_big_selects = @@SESSION.sql_big_selects; # # Create tables # CREATE TEMPORARY TABLE t1(a varchar(20) not null, b varchar(20)); CREATE TEMPORARY TABLE t2(a varchar(20) null, b varchar(20)); INSERT INTO t1 VALUES('aa','bb'); INSERT INTO t1 VALUES('aa1','bb'); INSERT INTO t1 VALUES('aa2','bb'); INSERT INTO t1 VALUES('aa3','bb'); INSERT INTO t1 VALUES('aa4','bb'); INSERT INTO t2 VALUES('aa','bb'); INSERT INTO t2 VALUES('aa1','bb'); INSERT INTO t2 VALUES('aa2','bb'); INSERT INTO t2 VALUES('aa3','bb'); INSERT INTO t2 VALUES('aa4','bb'); --echo '#--------------------FN_DYNVARS_161_01-------------------------#' # # Testing fail condition # SET SESSION sql_max_join_size=9; --error ER_TOO_BIG_SELECT SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a; --echo Expected error The SELECT would examine more than MAX_JOIN_SIZE rows. --echo '#--------------------FN_DYNVARS_161_02-------------------------#' # # Testing pass conditions # SET SESSION SQL_BIG_SELECTS = 1; SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a; --echo This should work SET SESSION sql_max_join_size=DEFAULT; DELETE FROM t2 WHERE a = 'aa4'; SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a; --echo This should work --echo '#----------------------------FN_DYNVARS_136_05-------------------------#' # # Session data integrity check & GLOBAL Value check # SET GLOBAL sql_max_join_size = 4; --echo ** Connecting con_int1 using root ** connect (con_int1,localhost,root,,); --echo ** Connection con_int1 ** connection con_int1; SELECT @@SESSION.sql_max_join_size; --echo 4 Expected SET SESSION sql_max_join_size = 2; --echo ** Connecting con_int2 using root ** connect (con_int2,localhost,root,,); --echo ** Connection con_int2 ** connection con_int2; SELECT @@SESSION.sql_max_join_size; --echo 4 Expected SET SESSION sql_max_join_size = 10; --echo ** Connection con_int2 ** connection con_int2; SELECT @@SESSION.sql_max_join_size; --echo 10 Expected --echo ** Connection con_int1 ** connection con_int1; SELECT @@SESSION.sql_max_join_size; --echo 2 Expected SELECT @@GLOBAL.sql_max_join_size; --echo 4 Expected --echo ** Connection default ** connection default; --echo Disconnecting Connections con_int1, con_int2 disconnect con_int1; disconnect con_int2; # # Cleanup # SET @@SESSION.sql_max_join_size = @session_max_join_size; SET @@GLOBAL.sql_max_join_size = @global_max_join_size ; SET @@SESSION.sql_big_selects = @session_sql_big_selects; DROP TABLE t1; DROP TABLE t2;
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