how to join tables in sql
JOINING 2 Tables in sql
SELECT X.Column_Name , Y.Column_Name2
FROM TABLES1_NAME X
INNER JOIN TABLES2_NAME Y ON X.Primary_key = Y.Foreign_key;
--FOR EXAMPLE
--GET THE FIRST_NAME AND JOB_TITLE
--USE EMPLOYEES AND JOBS TABLE
--THE RELATIONSHIP IS JOB_ID
SELECT E.FIRST_NAME , J.JOB_TITLE
FROM EMPLOYEES E
INNER JOIN JOBS J ON J.JOB_ID = E.JOB_ID;joins in sql
INNER JOIN:
is used when retrieving data from multiple
tables and will return only matching data.
LEFT OUTER JOIN:
is used when retrieving data from
multiple tables and will return
left table and any matching right table records.
RIGHT OUTER JOIN:
is used when retrieving data from
multiple tables and will return right
table and any matching left table records
FULL OUTER JOIN:
is used when retrieving data from
multiple tables and will return both
table records, matching and non-matching.
INNER JOIN :
SELECT select_list From TableA A
Inner Join TableB B
On A.Key = B.Key
LEFT OUTER JOIN :
SELECT select_list From TableA A
Left Join TableB B
On A.Key = B.Key
(where b.key is null)//For delete matching data
RIGTH OUTER JOIN :
SELECT select_list From TableA A
Right Join TableB B
On A.Key = B.Key
FULL JOIN :
SELECT select_list From TableA A
FULL OUTER Join TableB B
On A.Key = B.KeyJoin In Sql Server
CREATE PROCEDURE SP_Purechase_Selecte
AS
SELECT
p.P_Id ,
p.p_name,
p.alias_name,
p.alias_code,
p.p_name_inlocal_language,
p.barcode,
p.buy_price,
p.sell_price_tak,
p.sell_price_ko,
p.qty,
typeQty.qty_type,
b.brand_name,
CA.cat_name ,
SN.sn_name ,
P.P_Description ,
p.Barwari_Krin
FROM tbl_Purchase p
INNER JOIN tbl_Qty_Type typeQty ON P.qty_type_id=typeQty.id
INNER JOIN tbl_Brand b ON p.brand_id=b.brand_id
INNER JOIN tbl_Catigory CA ON P.cat_id =CA.cat_id
INNER JOIN tbl_Sceintific_Name SN ON p.sn_id= SN.sn_id
INNER JOIN tbl_Product_Creation
GROUP BY P.P_Id,
CA.Cat_Name ,
P.P_Name ,
SN .Sn_Name ,
P.sellPrice ,
P.buyPrice ,
P.Barcode ,
P.Qty ,
P.P_Description,
p.Barwari_Krin
RETURNjoin three tables sql
Suppose we are having three table named as
Student_details
Attendance_details
Batch_details
And we have to apply join these three tables for fetching records
Example query:
select column_names
from Student_detail as s join Attendance_details as a on
s.s_id = a.s_id join Batch_details as b on
s.s_id = b.s_id;
Here in the above example we implemented simple join but you change it with own join requirements.join data in sql
#Joining 2 tables: table_1 and table_1
#Select the all the columns you want to show in the final joined table.
SELECT
table_1.column_a,
table_2.column_b
#Select the first table
FROM
database_name.table_1
#Select the type of join statement and second table you want to join.
JOIN
database_name.table_2
#Select the related columns on which you want to join the tables.
ON
table_1.column_a = table_2.column_bCopyright © 2021 Codeinu
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