diff options
Diffstat (limited to 'mysql-test/r/query_cache_ps_ps_prot.result')
| -rw-r--r-- | mysql-test/r/query_cache_ps_ps_prot.result | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/mysql-test/r/query_cache_ps_ps_prot.result b/mysql-test/r/query_cache_ps_ps_prot.result index dc0c4a0193a..e594161f2e9 100644 --- a/mysql-test/r/query_cache_ps_ps_prot.result +++ b/mysql-test/r/query_cache_ps_ps_prot.result @@ -529,5 +529,46 @@ DROP DATABASE mysqltest1; use test; ######################################################################## +# +# Bug#27430 Crash in subquery code when in PS and table DDL changed +# after PREPARE +# Check the effect of automatic reprepare on query cache +# +######################################################################## +drop table if exists t1; +create table t1 (a varchar(255)); +insert into t1 (a) values ("Pack my box with five dozen liquor jugs."); +flush status; +prepare stmt from "select a from t1"; +execute stmt; +a +Pack my box with five dozen liquor jugs. +set @@global.query_cache_size=0; +alter table t1 add column b int; +execute stmt; +a +Pack my box with five dozen liquor jugs. +set @@global.query_cache_size=100000; +execute stmt; +a +Pack my box with five dozen liquor jugs. +execute stmt; +a +Pack my box with five dozen liquor jugs. +# +# Sic: ALTER TABLE caused an automatic reprepare +# of the prepared statement. Since the query cache was disabled +# at the time of reprepare, the new prepared statement doesn't +# work with it. +# +show status like 'Qcache_hits'; +Variable_name Value +Qcache_hits 0 +show status like 'Qcache_queries_in_cache'; +Variable_name Value +Qcache_queries_in_cache 0 +# Cleanup +deallocate prepare stmt; +drop table t1; set @@global.query_cache_size=@initial_query_cache_size; flush status; |