CODEWITHSUNDEEP
sqlms-access
user1601472
user1601472

Reputation: 181

Left Join SQL Query - MS Access

I am trying to join two tables Table1 and Table2 using the query below. I want all the columns (and rows) from Table1 and Column 'BasedOnDate' from Table2. The problem is, all the values in column 'BasedOnDate' are being set to 1 after the left join, instead of on the rows where is a match in both the tables (likes row 1 in Table1 and Row 1 in Table2. Can someone comment on where the problem lies?

The query I am using right now:

SELECT Table1.*, Table2.BasedOnDate
FROM Table1 LEFT JOIN Table2 ON (Table1.Name = Table2.Name) AND 
(Table1.[Date-4] = Table2.[Date-4]) AND 
(Table1.[Date-3] = Table2.[Date-3]) AND 
(Table1.[Date-2]= Table2.[Date-2]) AND 
(Table1.[Date-1] = Table2.[Date-1]) AND 
(Table1.ID = Table2.ID) AND 
(Table1.Site = Table2.Site);



Table2:

Site    ID     Date-1    Date-2     Date-3     Date-4    Name      BasedOnDate
00001   201    3/30/2011 4/6/2011   4/3/2011   4/6/2011  Name-1         1


Table1:

Site    ID     Date-1    Date-2     Date-3     Date-4    Name      
00001   201    3/30/2011 4/6/2011   4/3/2011   4/6/2011  Name-1
00001   101    5/21/2011 5/28/2011  5/21/2011  5/28/2011 Name-2

Upvotes: 1

Views: 166

Answers (1)

nzs
nzs

Reputation: 3252

As I recreated your situation I can confirm that using correct syntax the query works: retreives all column of Table1 plus the joined Table2's BasedOnDate. Where there's no match the query returns null for BasedOnDate.

SITE ID     DATE1           DATE2           DATE3           DATE4           NAME    BASEDONDATE
1    201    March, 30 2011  April, 06 2011  April, 03 2011  April, 06 2011  Name-1  1
1    101    May, 21 2011    May, 28 2011    May, 21 2011    May, 28 2011    Name-2  (null)

You can check here: http://sqlfiddle.com/#!6/a56ee/2

If you need further research pls take a comment. Hope it helps you!

Upvotes: 1

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