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How to determine the value of a field after it has been selected from a varchar field of 1 table and converted to an INT type value and inserted into another Sybase table with a field type of INT ?

Posted on 2016-11-09
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Last Modified: 2016-11-09
I am inserting records into a Sybase Table using
I am using a C# program to read in the records from a txt file named InputFile.txt into a Sybase table titled tableA.
One of the fields I read into tableA has a title "age" which has a datatype of varchar(3).
Let's say I read in the records as follows:

                   while ((line = file.ReadLine()) != null)
                    {
                        DataRow row = dt.NewRow();
                        row["age"] = line.Substring(45, 3);

Then I select the records from tableA insert them into another table, tableB that has a field titled "AgeDays" that is an INT type field. This is carried out as follows:

INSERT INTO tableB (
            AgeDays  )      
           SELECT
           CONVERT(INT, W.age) * 1 AS Expr4

If a record in the InputFile.txt has an Age value of '000' that is imported into the field tableA.age, what value would appear in tableB.AgeDays after the insertion statement is executed?
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Question by:zimmer9
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2 Comments
 
LVL 40

Accepted Solution

by:
Kyle Abrahams earned 2000 total points
ID: 41881093
000 is cast to 0 . . . 0 * 1 = 0.
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LVL 26

Expert Comment

by:wilcoxon
ID: 41881132
Since it is being inserted into an int field, the value will have all leading 0s stripped (000 -> 0, 001 -> 1, 010 -> 10, etc).
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