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How to compare the data of smallint with varchar

Hello, I have one field with type of smallint, and want to compared to another filed with type of varchar in differet table, both two fields have same meaning, now i want to compare them, how can i do a conversion, that say, Table A,field1: Line_nbr, varchar; Table B, field2:req_line_nbr. how can i do the comparsion of req_line_nbr with line_nbr? what function should i use? Thanks
0
shyline777
Asked:
shyline777
  • 2
1 Solution
 
strangelynormal1Commented:
SELECT *
FROM [Table A] a
         ,[Table B] b
WHERE CONVERT(VARCHAR(20),a.Line_nbr) = b.req_line_nbr
0
 
shyline777Author Commented:
i did the convert and only return 18 which should be 42, i found the problem coused by my extract function LEFT which Return TAB character clude, so can you tell me how can i extracted the characters before a TAB used as a delimiter in a data field?  Thank you so much
0
 
strangelynormal1Commented:
Okay, let's assume that the field only has tab as a possible extra character.

SELECT *
FROM [Table A] a
         ,[Table B] b
WHERE a.Line_nbr = CONVERT(SMALLINT,REPLACE(b.req_line_nbr,CHAR(9),''))
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