sql query to update multiple rows code example

Example 1: 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 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)