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query_cache.result, query_cache.test:
Character set variables test
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@ -709,3 +709,50 @@ Variable_name Value
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Qcache_queries_in_cache 2
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Qcache_queries_in_cache 2
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SET OPTION SQL_SELECT_LIMIT=DEFAULT;
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SET OPTION SQL_SELECT_LIMIT=DEFAULT;
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drop table t1;
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drop table t1;
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SET NAMES koi8r;
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CREATE TABLE t1 (a char(1) character set koi8r);
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INSERT INTO t1 VALUES (_koi8r'<27>'),(_koi8r'<27>');
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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a <09> '<27>'='<27>'
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<EFBFBD> <09> 1
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<EFBFBD> <09> 1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 12
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 1
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set collation_connection=koi8r_bin;
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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a <09> '<27>'='<27>'
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<EFBFBD> <09> 0
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<EFBFBD> <09> 0
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 12
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 2
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set character_set_client=cp1251;
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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a <09> '<27>'='<27>'
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<EFBFBD> <09> 0
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<EFBFBD> <09> 0
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 12
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 3
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set character_set_results=cp1251;
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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a <09> '<27>'='<27>'
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<EFBFBD> <09> 0
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<EFBFBD> <09> 0
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 12
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show status like "Qcache_queries_in_cache";
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Variable_name Value
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Qcache_queries_in_cache 4
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DROP TABLE t1;
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@ -487,3 +487,50 @@ select * from t1;
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show status like "Qcache_queries_in_cache";
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show status like "Qcache_queries_in_cache";
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SET OPTION SQL_SELECT_LIMIT=DEFAULT;
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SET OPTION SQL_SELECT_LIMIT=DEFAULT;
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drop table t1;
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drop table t1;
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#
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# Test character set related variables:
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# character_set_result
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# character_set_client
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# charactet_set_connection/collation_connection
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# If at least one of the above variables has changed,
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# the cached query can't be reused. In the below test
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# absolutely the same query is used several times,
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# SELECT should fetch different results for every instance.
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# No hits should be produced.
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# New cache entry should appear for every SELECT.
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#
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SET NAMES koi8r;
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CREATE TABLE t1 (a char(1) character set koi8r);
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INSERT INTO t1 VALUES (_koi8r'<27>'),(_koi8r'<27>');
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#
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# Run select
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#
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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show status like "Qcache_hits";
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show status like "Qcache_queries_in_cache";
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#
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# Change collation_connection and run the same query again
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#
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set collation_connection=koi8r_bin;
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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show status like "Qcache_hits";
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show status like "Qcache_queries_in_cache";
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#
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# Now change character_set_client and run the same query again
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#
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set character_set_client=cp1251;
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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show status like "Qcache_hits";
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show status like "Qcache_queries_in_cache";
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#
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# And finally change character_set_results and run the same query again
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#
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set character_set_results=cp1251;
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SELECT a,'<27>','<27>'='<27>' FROM t1;
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show status like "Qcache_hits";
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show status like "Qcache_queries_in_cache";
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#
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# Keep things tidy
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#
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DROP TABLE t1;
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