UPDATE your_table_name

SET column1 = select_statement.column1,

    column2 = select_statement.column2

FROM (

    SELECT column1, column2

    FROM another_table

    -- Optional: Add JOIN or WHERE conditions to filter/select specific records

) AS select_statement

WHERE your_table_name.id = select_statement.id;

UPDATE YourTable 

SET Col1 = OtherTable.Col1, 

    Col2 = OtherTable.Col2 

FROM (

    SELECT ID, Col1, Col2 

    FROM other_table) AS OtherTable

WHERE 

    OtherTable.ID = YourTable.ID

--the simplest way of doing this 

UPDATE

    table_to_update,

    table_info

SET

    table_to_update.col1 = table_info.col1,

    table_to_update.col2 = table_info.col2

​

WHERE

    table_to_update.ID = table_info.ID

UPDATE     Table_A SET     Table_A.col1 = Table_B.col1,     Table_A.col2 = Table_B.col2 FROM     Some_Table AS Table_A     INNER JOIN Other_Table AS Table_B         ON Table_A.id = Table_B.id WHERE     Table_A.col3 = 'cool'

In SQL Server 2008 (or newer), use MERGE

​

MERGE INTO YourTable T

   USING other_table S 

      ON T.id = S.id

         AND S.tsql = 'cool'

WHEN MATCHED THEN

   UPDATE 

      SET col1 = S.col1, 

          col2 = S.col2;

Alternatively:

​

MERGE INTO YourTable T

   USING (

          SELECT id, col1, col2 

            FROM other_table 

           WHERE tsql = 'cool'

         ) S

      ON T.id = S.id

WHEN MATCHED THEN

   UPDATE 

      SET col1 = S.col1, 

          col2 = S.col2;

UPDATE STATGLOB1

SET RESILI = tttt.nnn

(Select Count(ABONNE.NUMAB) as nnn From (ABONNE                                      

Inner Join ABONMENT ON ABONMENT.NUMAB = ABONNE.NUMAB)

Where ABONNE.SECTEUR='01'

And ABONMENT.ETATCPT=+QuotedStr('40')

Group By ABONNE.SECTEUR,Left(ABONNE.NUMAB,2),ABONNE.TYPABON,ABONMENT.ETATCPT) as tttt