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 server
/*General Formula For Joins*/
SELECT Column_List
FROM Left_Table_Name
JOIN_TYPES Right_Table_Name
ON Join_Condition
/*INNER JOIN - Matching Rows + Non Matching Rows are Eliminated
LEFT JOIN - Matching Rows + Non Matching Rows from the Left table
RIGHT JOIN - Matching Rows + Non Matching Rows from the Right table
FULL JOIN - Matching Rows + Non Matching Rows from the Both tables
CROSS JOIN - Return cartesian product of the tables involved in the Join
SELF JOIN - Return each table row is combined with itself and with every other table row.
The SELF JOIN can be thought of as a JOIN of two copies of the same tables.*/
/*Cross Join*/
SELECT Column_List
FROM Left_Table_Name
CROSS JOIN Right_Table_NameCopyright © 2021 Codeinu
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