CODEWITHSUNDEEP
mysqljoinleft-joinouter-join
Fakhr Alam
Fakhr Alam

Reputation: 199

left outer join in 3 tables

I hv 3 tables
shop floor and owner
shop is parent table and other 2 are child tables 

SHOP    
s_id, floor_id,s_owner,s_remarks
1,2,1,big shop   
2,2,3,near bank   
3,1,2,corner   
4,7,7,FAKE FLOOR AND OWNER   

OWNERS   
o_id, o_name, contact
1,gale,009659999999   
2,smith,00447676767   
3,pathan,0088787878   

FLOORS   
f_id, f_name
1,FIRST FLOOR   
2,SECOND FLOOR  
3,THIRD FLOOR   


select shop.s_id, floors.f_name, owners.o_id, s_remarks  
from ? join ?

TO show all records of shop even no related record occure in owners or in floors

Upvotes: 0

Views: 593

Answers (1)

Mark Byers
Mark Byers

Reputation: 839114

As you suggest in the title, you need to use a LEFT JOIN. This should get you started:

SELECT shop.s_id, floors.f_name, owners.o_id, s_remarks
FROM ?
LEFT JOIN ? ON ? = ?
LEFT JOIN ? ON ? = ?

You just need to replace the question marks with the correct table or column names.

Upvotes: 3

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