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include/master-slave.inc
[connection master]
connection master;
create table t1(a int , b int invisible);
insert into t1 values(1);
insert into t1(a,b) values(2,2);
select a,b from t1;
a b
1 NULL
2 2
desc t1;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES NULL INVISIBLE
create table t2(a int , b int invisible default 5);
insert into t2 values(1);
insert into t2(a,b) values(2,2);
select a,b from t2;
a b
1 5
2 2
desc t2;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES 5 INVISIBLE
connection slave;
select * from t1;
a
1
2
select a,b from t1;
a b
1 NULL
2 2
desc t1;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES NULL INVISIBLE
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) DEFAULT NULL,
`b` int(11) DEFAULT NULL INVISIBLE
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
select * from t2;
a
1
2
select a,b from t2;
a b
1 5
2 2
desc t2;
Field Type Null Key Default Extra
a int(11) YES NULL
b int(11) YES 5 INVISIBLE
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` int(11) DEFAULT NULL,
`b` int(11) DEFAULT 5 INVISIBLE
) ENGINE=MyISAM DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
connection master;
drop table t1,t2;
include/rpl_end.inc
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