Sql update from select

UPDATE YourTable 
SET Col1 = OtherTable.Col1, 
    Col2 = OtherTable.Col2 
FROM (
    SELECT ID, Col1, Col2 
    FROM other_table) AS OtherTable
WHERE 
    OtherTable.ID = YourTable.ID

Source: stackoverflow.com

Sql update from select

UPDATE t1
SET t1.COL1 = t2.COL1, t1.COL2 = t2.COL2
FROM MY_TABLE AS t1
JOIN MY_OTHER_TABLE AS t2 ON t1.COLID = t2.ID
WHERE t1.COL3 = 'OK';

How do I UPDATE from a SELECT in SQL Server?

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'

Source: thecodeteacher.com

How do I UPDATE from a SELECT in SQL Server?

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;

Source: stackoverflow.com

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