I think that this may help you.....
The query uses the inner join to join the table1 and table2
SELECT T1.name1,T2.name2
FROM `table1` T1
INNER JOIN `table2` T2 ON t2.name1=t1.PrimaryKey;
With your Example:
select * from Table1;
+----+------+------+--------+
| ID | Name | age | Gender |
+----+------+------+--------+
| 1 | Pars | 23 | M |
| 2 | Pepe | 24 | M |
| 3 | Pio | 25 | M |
| 4 | Pak | 26 | F |
+----+------+------+--------+
select * from Table2;
+------+------+------+--------+
| ID | Name | age | Gender |
+------+------+------+--------+
| 1 | Pars | 30 | M |
| 2 | Pepe | 31 | M |
| 3 | Pio | 32 | M |
+------+------+------+--------+
After the Update Query:
Update Table1 join Table2 using(ID) set Table1.AGE=Table2.AGE;
RESULT:
select * from Table1;
+----+------+------+--------+
| ID | Name | age | Gender |
+----+------+------+--------+
| 1 | Pars | 30 | M |
| 2 | Pepe | 31 | M |
| 3 | Pio | 32 | M |
| 4 | Pak | 26 | F |
+----+------+------+--------+
Used left join to join the tables. Try this code:-
select a.id ,
coalesce(a.name,b.name) as name
,coalesce(b.age,a.age)as age
,coalesce(a.gender,a.gender)as gender
from table1 as a
left join Table2 as b
on a.id=b.id
也尝试一下:
update Table1 set Table1.age=Table2.age from table1 inner join table2 on Table1.id=Table2.id
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