Use destination table values in source to get data

Question

I have a requirement to get data from source table to destination table. Source is oracle say tablename - 'orasource' fielnames=empid, empname and destination table name is 'sqldest' and field name are empid, empname.
My requirement - I want to fetch only those rows from source based on destination table 'sqldest' and field name is empid. How do I do this?

Answer 1

I am desperatly looking help...
Approach 1 - created two variables - oraquery string, empid string
step1 - ms sql database - created sql task - declare @empid varchar(max)
SELECT @empid=
Stuff((SELECT ',' + empid
        FROM  
        (SELECT  DISTINCT  convert(varchar(10),empid ) empid FROM emp
         ) x
        For XML PATH ('')),1,1,'')
select @empid =    '(' +  @empid + ')'
select @empid
resultset=singlerow
resultset=resultname=0; variablename=User::empid (empid is declared as string)
step2 - oracle database - created data flow task
created oledb source
I put  this statemnt in oraquery expression - "select * from dept where dept in  "
+  @[User::empid] + "
expression=true
[OLE DB Source [1]] Error: SSIS Error Code DTS_E_OLEDBERROR.  An OLE DB error has occurred. Error code: 0x80040E14.
An OLE DB record is available.  Source: "Microsoft OLE DB Provider for Oracle"  Hresult: 0x80040E14  Description: "ORA-00936: missing expression
If I put this statement in above, then it is working fine.
SELECT  top 10 convert(varchar(10),empid ) empid FROM emp
Approach-2
created three variables - oraquery string, empid  int, loop object--when I put int then it is automatically setting to 0
step1 - ms sql database - created sql task - SELECT  DISTINCT  convert(varchar(10),empid ) empid FROM emp
resultset=fullresult
resultset=resultname=0; variablename=User::loop 
step2 - created a for each loop container
for loop editor - for each ado ennumerator
enumerator configuration - loop
variablemapping - variable=empid;index=0
step3 - oracle database - created data flow task (outside for each loop. If I put inside it is taking long time)
created oledb source
I put  this statemnt in oraquery expression - "select * from dept where dept in  "
+  @[User::empid] + "
expression=true
Data inserting in a destination table but  empid=0.