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reset() split in 2 function clear() & add()

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aggregate function reinitialization (if no rows was found) made with help of clear()
(fixed BUG#860)


mysql-test/r/subselect.result:
  test for BUG#860
mysql-test/t/subselect.test:
  test for BUG#860
sql/item_sum.cc:
  reset() replaced with clear()
sql/item_sum.h:
  reset() replaced with clear()
  (reset now is just composition of clear() and add())
sql/item_uniq.h:
  reset() replaced with clear()
sql/sql_select.cc:
  removed NULL value assigment, now it will be done by clear() call
  function for clearing if there was not found any row in group
sql/sql_select.h:
  function for clearing if there was not found any row in group
This commit is contained in:
unknown 2003-08-28 03:10:14 +03:00
commit 85f7a6978b
7 changed files with 69 additions and 45 deletions
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10
mysql-test/t/subselect.test
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@ -912,3 +912,13 @@ select * from t1 where s1 > (select max(s2) from t1);
-- error 1266
select * from t1 where s1 > any (select max(s2) from t1);
drop table t1;
#
# aggregate functions reinitialization
#
create table t1(toid int,rd int);
create table t2(userid int,pmnew int,pmtotal int);
insert into t2 values(1,0,0),(2,0,0);
insert into t1 values(1,0),(1,0),(1,0),(1,12),(1,15),(1,123),(1,12312),(1,12312),(1,123),(2,0),(2,0),(2,1),(2,2);
select userid,pmtotal,pmnew, (select count(rd) from t1 where toid=t2.userid) calc_total, (select count(rd) from t1 where rd=0 and toid=t2.userid) calc_new from t2 where userid in (select distinct toid from t1);
drop table t1, t2;