ClickHouse/tests/queries/0_stateless/01298_alter_merge.sql
2020-06-06 19:19:16 +03:00

37 lines
1.7 KiB
SQL

drop table if exists merge;
drop table if exists merge1;
drop table if exists merge2;
create table merge1 ( CounterID UInt32, StartDate Date, Sign Int8, VisitID UInt64, UserID UInt64, StartTime DateTime, ClickLogID UInt64) ENGINE = CollapsingMergeTree(StartDate, intHash32(UserID), tuple(CounterID, StartDate, intHash32(UserID), VisitID, ClickLogID), 8192, Sign);
insert into merge1 values (1, '2013-09-19', 1, 0, 2, '2013-09-19 12:43:06', 3);
create table merge2 ( CounterID UInt32, StartDate Date, Sign Int8, VisitID UInt64, UserID UInt64, StartTime DateTime, ClickLogID UInt64) ENGINE = CollapsingMergeTree(StartDate, intHash32(UserID), tuple(CounterID, StartDate, intHash32(UserID), VisitID, ClickLogID), 8192, Sign);
insert into merge2 values (2, '2013-09-19', 1, 0, 2, '2013-09-19 12:43:06', 3);
create table merge ( CounterID UInt32, StartDate Date, Sign Int8, VisitID UInt64, UserID UInt64, StartTime DateTime, ClickLogID UInt64) ENGINE = Merge(currentDatabase(), 'merge\[0-9\]');
alter table merge1 add column dummy String after CounterID;
alter table merge2 add column dummy String after CounterID;
alter table merge add column dummy String after CounterID;
describe table merge;
show create table merge;
insert into merge1 values (1, 'Hello, Alter Table!','2013-09-19', 1, 0, 2, '2013-09-19 12:43:06', 3);
select CounterID, dummy from merge where dummy <> '' limit 10;
alter table merge drop column dummy;
describe table merge;
show create table merge;
--error: must correctly fall into the alter
alter table merge add column dummy1 String after CounterID;
select CounterID, dummy1 from merge where dummy1 <> '' limit 10;
drop table merge;
drop table merge1;
drop table merge2;