如何替换另一个表格列中的表格字符串

Question

How do I update/replace the value of the first table from the list of my second table in SQL. Sorry im not so good in using of SQL especially replacing from values base from different table

First table.

ID | Value
======================
1 | Fruits[Apple]
2 | Fruits[Apple,Mango]
3 | Apple[Red,Green]

Second table

Search | Replace
=========================
Apple  | Orange
Green  | Yellow

Answer 1

You will need some kind of recursive replace. something like a loop

declare @t1 table (ID int, Value varchar(max))
declare @t2 table (Search  varchar(max), ReplaceWith varchar(max))
insert @t1 values (1, 'Fruits[Apple]'),(2, 'Fruits[Apple,Mango]'), (3, 'Apple[Red,Green]')
insert @t2 values ('Apple', 'Orange'),('Green', 'Yellow')

--loop nth times for rows that have more than one match
while exists(select top 1 * from @t1 inner join @t2 on charindex(Search, Value ) > 0)
begin 
    update @t1
    set Value = replace(Value, Search, ReplaceWith)
    from @t2
    inner join @t1 on charindex(Search, Value ) > 0
end

select * from @t1

results

ID    Value
----- -----------------------
1     Fruits[Orange]
2     Fruits[Orange,Mango]
3     Orange[Red,Yellow]

Alternatively, you could use recursive CTE

;with CTE(ID, Value, rec_count)
as (
    select distinct ID, Value, 1 as rec_count  from @t1 inner join @t2 on charindex(Search, Value ) > 0
    union all
    select ID, Value = replace(Value, Search, ReplaceWith), rec_count +1
    from CTE
    inner join @t2 on charindex(Search, Value ) > 0
)
update @t1 
set Value= replaced.Value 
from @t1 t
inner join 
( select distinct ID, Value 
  from CTE c 
  where rec_count > 1 
  and rec_count = (select max(rec_count) from CTE where ID = c.ID) ) replaced on replaced.ID = t.ID

Answer 2

Simply use following UPDATE by cross-joined select statement and enjoy it! ;)

UPDATE  tFirst
SET     Value = REPLACE(tFirst.Value, tSecond.Search, tSecond.Replace)
FROM
    [First]             tFirst
    CROSS JOIN [Second] tSecond