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SET STATEMENT timestamp=xxx ....

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fix sys_var->is_default() method (that was using default_val property
in a global sys_var object to track per-session state):
* move timestamp to a dedicated Sys_var_timestamp class
  (in fact, rename Sys_var_session_special_double to Sys_var_timestamp)
* make session_is_default a virtual method with a special implementation
  for timestamps
* other variables don't have a special behavior for default values
  and can have session_is_default() to be always false.
This commit is contained in:
Sergei Golubchik
2015-04-09 11:14:57 +02:00
parent 0a9052f591
commit eb29a63e45
5 changed files with 41 additions and 42 deletions
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2
sql/sql_parse.cc
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@ -2663,7 +2663,7 @@ mysql_execute_command(THD *thd)
lex->free_arena_for_set_stmt();
goto error;
}
if (v->var->is_default())
if (v->var->session_is_default(thd))
o= new set_var(v->type, v->var, &v->base, NULL);
else
{