Commit cebe1b5d authored by unknown's avatar unknown
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store SERVER_MORE_RESULTS_EXISTS in key of query cache (BUG#6897) 


mysql-test/r/query_cache.result:
  query in QC from normal execution and SP
mysql-test/t/query_cache.test:
  environment restoring fix
  layout fix
  query in QC from normal execution and SP
sql/mysql_priv.h:
  store SERVER_MORE_RESULTS_EXISTS
sql/sql_cache.cc:
  store SERVER_MORE_RESULTS_EXISTS in key of query cache
BitKeeper/etc/config:
  switching logging off
parent 5ae1fd9d

BitKeeper/etc/config

+1 −1
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ description: MySQL - fast and reliable SQL database 
# repository is commercial it can be an internal email address or "none"

# to disable logging.

# 

logging:  logging@openlogging.org

logging:  none

# 

# If this field is set, all checkins will appear to be made by this user,

# in effect making this a single user package.  Single user packages are

mysql-test/r/query_cache.result

+79 −0
Original line number Diff line number Diff line
@@ -852,6 +852,7 @@ Qcache_hits 6 
show status like "Qcache_queries_in_cache";

Variable_name	Value

Qcache_queries_in_cache	4

SET NAMES default;

DROP TABLE t1;

CREATE TABLE t1 (a int(1));

CREATE DATABASE mysqltest;
@@ -1007,6 +1008,8 @@ abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzab 
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flush query cache;

drop table t1, t2;

set GLOBAL query_cache_size=1355776

#;

create table t1 (a int);

insert into t1 values (1),(2);

CREATE PROCEDURE `p1`()
@@ -1036,4 +1039,80 @@ a f1() 
2	2

drop procedure p1//

drop table t1//

flush query cache;

reset query cache;

flush status;

create table t1 (s1 int)//

create procedure f1 () begin

select sql_cache * from t1;

select sql_cache * from t1;

end;//

call f1();

s1

show status like "Qcache_queries_in_cache";

Variable_name	Value

Qcache_queries_in_cache	1

show status like "Qcache_inserts";

Variable_name	Value

Qcache_inserts	1

show status like "Qcache_hits";

Variable_name	Value

Qcache_hits	1

call f1();

s1

show status like "Qcache_queries_in_cache";

Variable_name	Value

Qcache_queries_in_cache	1

show status like "Qcache_inserts";

Variable_name	Value

Qcache_inserts	1

show status like "Qcache_hits";

Variable_name	Value

Qcache_hits	3

call f1();

s1

select sql_cache * from t1;

s1

show status like "Qcache_queries_in_cache";

Variable_name	Value

Qcache_queries_in_cache	2

show status like "Qcache_inserts";

Variable_name	Value

Qcache_inserts	2

show status like "Qcache_hits";

Variable_name	Value

Qcache_hits	5

insert into t1 values (1);

select sql_cache * from t1;

s1

1

show status like "Qcache_queries_in_cache";

Variable_name	Value

Qcache_queries_in_cache	1

show status like "Qcache_inserts";

Variable_name	Value

Qcache_inserts	3

show status like "Qcache_hits";

Variable_name	Value

Qcache_hits	5

call f1();

s1

1

call f1();

s1

1

select sql_cache * from t1;

s1

1

show status like "Qcache_queries_in_cache";

Variable_name	Value

Qcache_queries_in_cache	2

show status like "Qcache_inserts";

Variable_name	Value

Qcache_inserts	4

show status like "Qcache_hits";

Variable_name	Value

Qcache_hits	9

drop procedure f1;

drop table t1;

set GLOBAL query_cache_size=0;

mysql-test/t/query_cache.test

+44 −1
Original line number Diff line number Diff line
@@ -616,6 +616,7 @@ set character_set_results=cp1251; 
SELECT a,'',''='' FROM t1; 

show status like "Qcache_hits";

show status like "Qcache_queries_in_cache";

SET NAMES default;



DROP TABLE t1;
@@ -711,9 +712,10 @@ repair table t1; 
show status like 'qcache_queries_in_cache';

drop table t1;



#

# Bug #9549: Make sure cached queries that span more than one cache block

# are handled properly in the embedded server.



#

# We just want a small query cache, so we can fragment it easily

set GLOBAL query_cache_size=64*1024;

# This actually gives us a usable cache size of about 48K
@@ -755,6 +757,8 @@ select a from t1; 
flush query cache;



drop table t1, t2;

set GLOBAL query_cache_size=1355776





#

# SP cursors and selects with query cache (BUG#9715)
@@ -788,4 +792,43 @@ drop procedure p1// 
drop table t1//

delimiter ;//



#

# query in QC from normal execution and SP (BUG#6897)

#

flush query cache;

reset query cache;

flush status;

delimiter //;

create table t1 (s1 int)//

create procedure f1 () begin

select sql_cache * from t1;

select sql_cache * from t1;

end;//

delimiter ;//

call f1();

show status like "Qcache_queries_in_cache";

show status like "Qcache_inserts";

show status like "Qcache_hits";

call f1();

show status like "Qcache_queries_in_cache";

show status like "Qcache_inserts";

show status like "Qcache_hits";

call f1();

select sql_cache * from t1;

show status like "Qcache_queries_in_cache";

show status like "Qcache_inserts";

show status like "Qcache_hits";

insert into t1 values (1);

select sql_cache * from t1;

show status like "Qcache_queries_in_cache";

show status like "Qcache_inserts";

show status like "Qcache_hits";

call f1();

call f1();

select sql_cache * from t1;

show status like "Qcache_queries_in_cache";

show status like "Qcache_inserts";

show status like "Qcache_hits";

drop procedure f1;

drop table t1;

set GLOBAL query_cache_size=0;

sql/mysql_priv.h

+1 −0
Original line number Diff line number Diff line
@@ -521,6 +521,7 @@ struct Query_cache_query_flags 
{

  unsigned int client_long_flag:1;

  unsigned int client_protocol_41:1;

  unsigned int more_results_exists:1;

  uint character_set_client_num;

  uint character_set_results_num;

  uint collation_connection_num;

sql/sql_cache.cc

+38 −8
Original line number Diff line number Diff line
@@ -775,10 +775,11 @@ void Query_cache::store_query(THD *thd, TABLE_LIST *tables_used) 
    Query_cache_query_flags flags;

    // fill all gaps between fields with 0 to get repeatable key

    bzero(&flags, QUERY_CACHE_FLAGS_SIZE);

    flags.client_long_flag= (thd->client_capabilities & CLIENT_LONG_FLAG ?

			     1 : 0);

    flags.client_protocol_41= (thd->client_capabilities & CLIENT_PROTOCOL_41 ?

			     1 : 0);

    flags.client_long_flag= test(thd->client_capabilities & CLIENT_LONG_FLAG);

    flags.client_protocol_41= test(thd->client_capabilities &

                                   CLIENT_PROTOCOL_41);

    flags.more_results_exists= test(thd->server_status &

                                    SERVER_MORE_RESULTS_EXISTS);

    flags.character_set_client_num=

      thd->variables.character_set_client->number;

    flags.character_set_results_num=
@@ -792,6 +793,20 @@ void Query_cache::store_query(THD *thd, TABLE_LIST *tables_used) 
    flags.sql_mode= thd->variables.sql_mode;

    flags.max_sort_length= thd->variables.max_sort_length;

    flags.group_concat_max_len= thd->variables.group_concat_max_len;

    DBUG_PRINT("qcache", ("long %d, 4.1: %d, more results %d, \

CS client: %u, CS result: %u, CS conn: %u, limit: %lu, TZ: 0x%lx, \

sql mode: 0x%lx, sort len: %lu, conncat len: %lu",

                          (int)flags.client_long_flag,

                          (int)flags.client_protocol_41,

                          (int)flags.more_results_exists,

                          flags.character_set_client_num,

                          flags.character_set_results_num,

                          flags.collation_connection_num,

                          flags.limit,

                          (ulong)flags.time_zone,

                          flags.sql_mode,

                          flags.max_sort_length,

                          flags.group_concat_max_len));

    STRUCT_LOCK(&structure_guard_mutex);



    if (query_cache_size == 0)
@@ -974,10 +989,11 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length) 


  // fill all gaps between fields with 0 to get repeatable key

  bzero(&flags, QUERY_CACHE_FLAGS_SIZE);

  flags.client_long_flag= (thd->client_capabilities & CLIENT_LONG_FLAG ?

			   1 : 0);

  flags.client_protocol_41= (thd->client_capabilities & CLIENT_PROTOCOL_41 ?

                           1 : 0);

  flags.client_long_flag= test(thd->client_capabilities & CLIENT_LONG_FLAG);

  flags.client_protocol_41= test(thd->client_capabilities &

                                 CLIENT_PROTOCOL_41);

  flags.more_results_exists= test(thd->server_status &

                                  SERVER_MORE_RESULTS_EXISTS);

  flags.character_set_client_num= thd->variables.character_set_client->number;

  flags.character_set_results_num=

    (thd->variables.character_set_results ?
@@ -989,6 +1005,20 @@ Query_cache::send_result_to_client(THD *thd, char *sql, uint query_length) 
  flags.sql_mode= thd->variables.sql_mode;

  flags.max_sort_length= thd->variables.max_sort_length;

  flags.group_concat_max_len= thd->variables.group_concat_max_len;

  DBUG_PRINT("qcache", ("long %d, 4.1: %d, more results %d, \

CS client: %u, CS result: %u, CS conn: %u, limit: %lu, TZ: 0x%lx, \

sql mode: 0x%lx, sort len: %lu, conncat len: %lu",

                          (int)flags.client_long_flag,

                          (int)flags.client_protocol_41,

                          (int)flags.more_results_exists,

                          flags.character_set_client_num,

                          flags.character_set_results_num,

                          flags.collation_connection_num,

                          flags.limit,

                          (ulong)flags.time_zone,

                          flags.sql_mode,

                          flags.max_sort_length,

                          flags.group_concat_max_len));

  memcpy((void *)(sql + (tot_length - QUERY_CACHE_FLAGS_SIZE)),

	 &flags, QUERY_CACHE_FLAGS_SIZE);

  query_block = (Query_cache_block *)  hash_search(&queries, (byte*) sql,