如何在SQL Server 2012中使用replace，substring charindex从表中获取ID？

Question

I have two tables ( #temp1 and #temp2 ) as shown in the below code and I'm trying to get the matching static ID for the values present in #temp2 table but there is problem with the below code such that it returns null staticID value.

I'm not sure where its getting wrong can someone let me know whats the mistake I'm doing in the below code ?

 BEGIN
    CREATE TABLE #temp2
      (
         staticname VARCHAR(160),
      )

    INSERT INTO #temp2
    VALUES      ('Per capita disappearance, carcass weight(456)'),
                ('Production(286)')

    CREATE TABLE #temp1
      (
         idnum         INTEGER IDENTITY(1, 1),
         statisticname VARCHAR(256),
         staticid      INTEGER
      )

    INSERT INTO #temp1
    VALUES      ('Per capita disappearance, carcass weight',
                 '144'),
                ('Production',
                 '143')

SELECT 
    Ltrim (Rtrim (Replace (T2.staticname, Substring(T2.staticname,
                  Charindex('(', T2.staticname, 0),
                  Len(T2.staticname) - ( Charindex('(', T2.staticname, 0) - 1 )), ''
       ))),
    T1.staticid
FROM   
    #temp2 T2
LEFT JOIN 
    #temp1 T1 ON T2.staticname = T1.statisticname

DROP TABLE #temp1
DROP TABLE #temp2

Answer 1

#temp1 table's STATISTICNAME values

Per capita disappearance, carcass weight
Production

are not matching with #temp2 table's STATISTICNAME values

Per capita disappearance, carcass weight(456)
Production(286)

Since using the LEFT JOIN so obviously the left table #temp data will come, so the STATICID column from #temp1 is returning NULL

If you want to do the partial search with the columns use the LIKE operator. So your LEFT JOIN block will be:

LEFT JOIN #TEMP1 T1 ON T2.STATICNAME LIKE T1.STATISTICNAME + '%'

Answer 2

You have to change the columns that match in the JOIN

SELECT LTRIM (RTRIM (REPLACE (T2.STATICNAME,SUBSTRING(T2.STATICNAME, CHARINDEX('(',T2.STATICNAME,0), LEN(T2.STATICNAME)-(CHARINDEX('(',T2.STATICNAME,0)-1)),    '')))
       ,T1.STATICID
FROM #TEMP2 T2 LEFT JOIN #TEMP1 T1 ON LTRIM (RTRIM (REPLACE (T2.STATICNAME,SUBSTRING(T2.STATICNAME, CHARINDEX('(',T2.STATICNAME,0), LEN(T2.STATICNAME)-(CHARINDEX('(',T2.STATICNAME,0)-1)),    ''))) 
                                      = T1.STATISTICNAME

Answer 3

You are not joining on the parsed value. Try this:

 BEGIN

CREATE TABLE #TEMP2
(
  STATICNAME Varchar(160),
  )

INSERT INTO #TEMP2 VALUES ('Per capita disappearance, carcass weight(456)'),('Production(286)')
  CREATE TABLE #TEMP1
(
IDNUM INTEGER IDENTITY(1,1),
STATISTICNAME VARCHAR(256),
STATICID INTEGER
)

INSERT INTO #TEMP1 VALUES ('Per capita disappearance, carcass weight','144'),('Production','143')

;With cteParsed As
(Select *,
    LTRIM (RTRIM (REPLACE (T2.STATICNAME,SUBSTRING(T2.STATICNAME, 
    CHARINDEX('(',T2.STATICNAME,0), LEN(T2.STATICNAME)-
    (CHARINDEX('(',T2.STATICNAME,0)-1)),    ''))) StaticNameParsed
    From #Temp2 T2
)
Select *, T1.STATICID 
    From cteParsed T2 
    LEFT JOIN #TEMP1 T1 ON T2.StaticNameParsed = T1.STATISTICNAME
DROP TABLE #TEMP1
DROP TABLE #TEMP2
END

Answer 4

Not sure what you are looking for, but your join was failing

Select A.*,B.*
 From #Temp1 A 
 Join #Temp2 B on ( B.STATICNAME Like A.STATISTICNAME+'%'  )