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Don't force column header to @@session.var_name if @@local.var_name

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was used. (Bug #10724)


mysql-test/r/key_cache.result:
  Updated results
mysql-test/r/ps_1general.result:
  Updated results
mysql-test/r/user_var.result:
  Add new results
mysql-test/r/variables.result:
  Update results
mysql-test/t/user_var.test:
  Add new regression test
sql/item_func.cc:
  Don't set name explicitly in get_system_var(), let it get set by the
  select_item: rule in sql_parse.yy or other callers of get_system_var().
sql/sql_parse.cc:
  Set the name on the Item returned by get_system_var().
This commit is contained in:
unknown
2005-07-25 11:25:28 -07:00
parent bf45b6ba84
commit f8a6e9d369
7 changed files with 67 additions and 32 deletions
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12
sql/sql_parse.cc
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@@ -4197,6 +4197,8 @@ void create_select_for_variable(const char *var_name)
THD *thd;
LEX *lex;
LEX_STRING tmp, null_lex_string;
Item *var;
char buff[MAX_SYS_VAR_LENGTH*2+4+8], *end;
DBUG_ENTER("create_select_for_variable");
thd= current_thd;
@@ -4206,8 +4208,14 @@ void create_select_for_variable(const char *var_name)
tmp.str= (char*) var_name;
tmp.length=strlen(var_name);
bzero((char*) &null_lex_string.str, sizeof(null_lex_string));
add_item_to_list(thd, get_system_var(thd, OPT_SESSION, tmp,
null_lex_string));
/*
We set the name of Item to @@session.var_name because that then is used
as the column name in the output.
*/
var= get_system_var(thd, OPT_SESSION, tmp, null_lex_string);
end= strxmov(buff, "@@session.", var_name, NullS);
var->set_name(buff, end-buff, system_charset_info);
add_item_to_list(thd, var);
DBUG_VOID_RETURN;
}