select from select sql code example

Example 1: sql select from select

SELECT t1.*
FROM   t1
WHERE  t1.MY_FIELD = (SELECT  t2.MY_FIELD
                   FROM    t2
                   WHERE   t2.MY_FIELD = t1.MY_FIELD);

Example 2: how select from db

SELECT columname FROM tablename

Example 3: SELECT FROM

SELECT * FROM Customers;

Example 4: sql select

Everything in brackets is optional.
SELECT [all/distinct] <COL1>, <COL2>, <COL3>
FROM <TABLE_NAME>
[JOIN <JOIN_CONDITION>]
[WHERE <CONDITION>]
[GROUP BY <COLUMN_NAME>]
[HAVING <SEARCH_CONDITION>]
[ORDER BY <SORT_SPECIFICATION>]

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