MULTIPLE UPDATE SQL code example

Example 1: update multiple columns in sql

UPDATE table-name SET column-name = value, column-name = value WHERE condition = value

Example 2: update table sql multiple set

-- CANT do multiple sets but can do case
UPDATE table
SET ID = CASE WHEN ID = 2555 THEN 111111259 
              WHEN ID = 2724 THEN 111111261
              WHEN ID = 2021 THEN 111111263
              WHEN ID = 2017 THEN 111111264
         END
WHERE ID IN (2555,2724,2021,2017)

Example 3: sql run multiple updates in one query

UPDATE table_name
SET   field_name = 
      case  field_name2 
      when 'value' then 'change_to'
      when 'value2' then 'change_to2'
end

Example 4: sql update multiple tables

/*You can't update multiple tables in one statement,
however, you can use a transaction to make sure that
two UPDATE statements are treated atomically.
You can also batch them to avoid a round trip.*/


BEGIN TRANSACTION;

UPDATE Table1
  SET Table1.LastName = 'DR. XXXXXX' 
FROM Table1 T1, Table2 T2
WHERE T1.id = T2.id
and T1.id = '011008';

UPDATE Table2
SET Table2.WAprrs = 'start,stop'
FROM Table1 T1, Table2 T2
WHERE T1.id = T2.id
and T1.id = '011008';

COMMIT;