how to join left join of different tables

Answer 1

suppose there are 3 tables : one, two, three
then query will be
SELECT o.columnname FROM one o
LEFT JOIN two t ON o.id = t.id
LEFT JOIN threr th ON th.id = o.id
considering three tables are linked with each other via id

Answer 2

in db2 database

Answer 3

you mean to say create a join from two different databases?

Answer 4

no. I have 3 tables in db2 and need to get result like. in first table I need Column one and second table 2 column and third table I need 3 column , how can use left join to get desired result

Answer 5

SELECT o.columnname, t.columnname, th.columnname FROM one o
LEFT JOIN two t ON o.id = t.id
LEFT JOIN threr th ON th.id = o.id
just select the columns as above by using table aliases

Answer 6

for more detail please give me the tables name and columns name you want to select and relation column between these three

Answer 7

in three tables I have unique I'd I,e employeeid

Answer 8

ok then just use table aliases and employeeid at ON clause like
ON o.employeeid = t.employeeid

Answer 9

I tried that query is executing but result unable to get querying the I did some thing wrong , it is very helpful to me if you write complete query

Answer 10

please post your query

Answer 11

OK tomorrow I will post my how I am doing the query

Answer 12

thank you

Answer 13

no problem