SQL

sql update query

--update query example
 UPDATE table_name
 SET column1 = value1, column2 = value2, ...
 WHERE condition; 

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

Update Query in SQL Server

 
  UPDATE table1
  SET column2 = 'Your Text', column3 = 45000
  WHERE column1=5

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;

Update Query in SQL Server

  Update salesTransaction
  Set Unit_Price=45.41,Item_Number='Milk-1'
  Where trx_id=1249

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'

update select sql

--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