Moved safe_to_cache_query from thd to lex.

This is required for prepared statements and stored procedures.


BitKeeper/etc/ignore:
  Added bkpull.log bkpull.log.2 bkpull.log.3 build.log sql/safe_to_cache_query.txt to the ignore list
sql/item_create.cc:
  Moved safe_to_cache_query from thd to lex.
sql/item_func.cc:
  Moved safe_to_cache_query from thd to lex.
sql/sql_cache.cc:
  Moved safe_to_cache_query from thd to lex.
  Note: Query_cache::is_cacheable() has both a thd and lex argument.
  We assumed that it's the lex->safe_to_cache_query we should test.
sql/sql_class.cc:
  Moved safe_to_cache_query from thd to lex.
sql/sql_class.h:
  Moved safe_to_cache_query from thd to lex.
sql/sql_lex.cc:
  Moved safe_to_cache_query from thd to lex.
  We set it to 1 initially. It's then set to 0 in cases where
  it's know not to be safe. (Before this change, it was set to
  0 in thd, and then set to 1 before parsing.)
sql/sql_lex.h:
  Moved safe_to_cache_query from thd to lex.
sql/sql_parse.cc:
  Moved safe_to_cache_query from thd to lex.
  No point in setting it here now, it's set in lex_start() later.
sql/sql_prepare.cc:
  Moved safe_to_cache_query from thd to lex.
  Must set it after lex_start() has been called.
sql/sql_yacc.yy:
  Moved safe_to_cache_query from thd to lex.

1 files changed, 1 insertions, 1 deletions

diff --git a/sql/sql_class.cc b/sql/sql_class.cc
index 4141211ad92..9bca7245cba 100644
--- a/sql/sql_class.cc
+++ b/sql/sql_class.cc
@@ -87,7 +87,7 @@ THD::THD():user_time(0), fatal_error(0),
   host=user=priv_user=db=query=ip=0;
   host_or_ip="unknown ip";
   locked=killed=count_cuted_fields=some_tables_deleted=no_errors=password=
-    query_start_used=safe_to_cache_query=prepare_command=0;
+    query_start_used=prepare_command=0;
   db_length=query_length=col_access=0;
   query_error=0;
   next_insert_id=last_insert_id=0;