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Merge maint2.mysql.com:/data/localhome/tsmith/bk/mrg50/50

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into  maint2.mysql.com:/data/localhome/tsmith/bk/mrg50/51


BUILD/SETUP.sh:
  Auto merged
client/Makefile.am:
  Auto merged
dbug/Makefile.am:
  Auto merged
include/mysql_com.h:
  Auto merged
libmysql/Makefile.am:
  Auto merged
mysql-test/lib/mtr_cases.pl:
  Auto merged
mysql-test/lib/mtr_match.pl:
  Auto merged
mysql-test/lib/mtr_misc.pl:
  Auto merged
mysql-test/r/ctype_ucs.result:
  Auto merged
mysql-test/r/ctype_utf8.result:
  Auto merged
mysql-test/r/func_time.result:
  Auto merged
mysql-test/r/myisam.result:
  Auto merged
mysql-test/r/query_cache.result:
  Auto merged
mysql-test/r/range.result:
  Auto merged
mysql-test/t/ctype_ucs.test:
  Auto merged
mysql-test/t/ctype_utf8.test:
  Auto merged
mysql-test/t/func_time.test:
  Auto merged
mysql-test/t/myisam.test:
  Auto merged
mysql-test/t/range.test:
  Auto merged
mysql-test/t/system_mysql_db_fix.test:
  Auto merged
mysys/my_seek.c:
  Auto merged
regex/Makefile.am:
  Auto merged
scripts/Makefile.am:
  Auto merged
server-tools/instance-manager/Makefile.am:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/item_func.h:
  Auto merged
sql/item_strfunc.cc:
  Auto merged
sql/item_strfunc.h:
  Auto merged
sql/item_sum.cc:
  Auto merged
sql/log.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/slave.cc:
  Auto merged
sql/slave.h:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_lex.cc:
  Auto merged
sql/sql_lex.h:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_repl.h:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/stacktrace.c:
  Auto merged
sql-common/client.c:
  Auto merged
sql/stacktrace.h:
  Auto merged
storage/innobase/Makefile.am:
  Auto merged
support-files/mysql.spec.sh:
  Auto merged
tests/Makefile.am:
  Auto merged
tests/mysql_client_test.c:
  Auto merged
BitKeeper/deleted/.del-mytest.c:
  Delete: libmysql/mytest.c
BitKeeper/deleted/.del-make_win_bin_dist:
  Delete: scripts/make_win_bin_dist
BitKeeper/deleted/.del-message.mc~1:
  Delete: sql/message.mc
Makefile.am:
  Manual merge (use local)
configure.in:
  Manual merge (use local)
BitKeeper/deleted/.del-Makefile.in:
  Manual merge (use local)
client/mysqlbinlog.cc:
  Manual merge (use local)
extra/Makefile.am:
  Manual merge (use local)
extra/comp_err.c:
  Manual merge (use local)
extra/yassl/Makefile.am:
  Manual merge (use local)
extra/yassl/taocrypt/Makefile.am:
  Manual merge (use local)
include/my_dbug.h:
  Manual merge (use local)
mysql-test/mysql-test-run.pl:
  Manual merge (use local)
mysql-test/lib/mtr_process.pl:
  Manual merge (use local)
mysys/Makefile.am:
  Manual merge (use local)
server-tools/Makefile.am:
  Manual merge (use local)
sql/Makefile.am:
  Manual merge (use local)
sql/sp.cc:
  Manual merge
sql/sp_head.cc:
  Manual merge
sql/sql_class.h:
  Manual merge (use local)
sql/sql_select.cc:
  SCCS merged
sql/table.cc:
  Manual merge
storage/archive/ha_archive.cc:
  Manual merge
storage/heap/Makefile.am:
  Manual merge (use local)
storage/myisam/Makefile.am:
  Manual merge (use local)
storage/myisammrg/Makefile.am:
  Manual merge (use local)
strings/Makefile.am:
  Manual merge (use local)
vio/Makefile.am:
  Manual merge (use local)
zlib/Makefile.am:
  Manual merge (use local)
This commit is contained in:
unknown
2006-09-13 09:03:52 +02:00
parent bc053aa0a1 2214e282a3
commit fba86d2b7e
39 changed files with 612 additions and 341 deletions
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21
sql/sql_select.cc
View File

@ -9094,11 +9094,6 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
keyinfo->key_length+= key_part_info->length;
}
}
else
{
set_if_smaller(table->s->max_rows, rows_limit);
param->end_write_records= rows_limit;
}
if (distinct && field_count != param->hidden_field_count)
{
@ -9113,8 +9108,6 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
null_pack_length-=hidden_null_pack_length;
keyinfo->key_parts= ((field_count-param->hidden_field_count)+
test(null_pack_length));
set_if_smaller(share->max_rows, rows_limit);
param->end_write_records= rows_limit;
table->distinct= 1;
share->keys= 1;
if (blob_count)
@ -9169,6 +9162,20 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
0 : FIELDFLAG_BINARY;
}
}
/*
Push the LIMIT clause to the temporary table creation, so that we
materialize only up to 'rows_limit' records instead of all result records.
This optimization is not applicable when there is GROUP BY or there is
no GROUP BY, but there are aggregate functions, because both must be
computed for all result rows.
*/
if (!group && !thd->lex->current_select->with_sum_func)
{
set_if_smaller(table->s->max_rows, rows_limit);
param->end_write_records= rows_limit;
}
if (thd->is_fatal_error) // If end of memory
goto err; /* purecov: inspected */
share->db_record_offset= 1;