Sql – ID should not display between the specified date

sqlsql serversql-server-2000tsql

Using SQL Server 2000

Database1.Table1

ID  Name Date       title    
001 Ravi 23-02-2009 Accountant
001 Ravi 24-02-2009 Accountant
001 Ravi 25-02-2009 Accountant
002 Ram  21-02-2009 Supervisors
002 Ram  25-02-2009 Supervisors
002 Ram  26-02-2009 Supervisors

So on…,

Database2.Table2

ID  Name Date1      Date2    
001 Ravi 23-02-2009 24-02-2009 
002 Ram  21-02-2009 24-02-2009

So on…

Suppose I want to display the records from 21-02-2009 to 26-02-2009 –
Expected Output:

001 Ravi 25-02-2009 Accountant
002 Ram 25-02-2009 Supervisors
002 Ram 26-02-2009 Supervisors

From the above two table I want to display id, name, date, title from Database1.table1 where Database1.table1.id should not display between date1 and date2 from Database2.table2:

(23-02-2009 to 24-02-2009) ID should not display from table1
(21-02-2009 24-02-2009) ID should not display from table1

How to make a query in SQL?

Can any one help me.

Best Answer

For every row in Table1 we look for row in Table2 and show only rows with no Table2 match:



SELECT
  TABLE1.*
FROM TABLE1
LEFT JOIN TABLE2
ON 
  (TABLE1.ID = TABLE2.ID) AND --JOIN TABLE2 BY ID
  (TABLE1.DATE BETWEEN TABLE2.DATE1 AND TABLE2.DATE2) --AND BY DATE CRITERIA
WHERE 
  (TABLE2.ID IS NULL) AND --SHOW ONLY IF IT DIDN'T MATCH ROW IN TABLE2
  (TABLE1.DATE BETWEEN '21-02-2009' AND '26-02-2009')

Related Solutions

Sql – the difference between “INNER JOIN” and “OUTER JOIN”

Assuming you're joining on columns with no duplicates, which is a very common case:

An inner join of A and B gives the result of A intersect B, i.e. the inner part of a Venn diagram intersection.
An outer join of A and B gives the results of A union B, i.e. the outer parts of a Venn diagram union.

Examples

Suppose you have two tables, with a single column each, and data as follows:

Note that (1,2) are unique to A, (3,4) are common, and (5,6) are unique to B.

Inner join

An inner join using either of the equivalent queries gives the intersection of the two tables, i.e. the two rows they have in common.

select * from a INNER JOIN b on a.a = b.b;
select a.*, b.*  from a,b where a.a = b.b;

a | b
--+--
3 | 3
4 | 4

Left outer join

A left outer join will give all rows in A, plus any common rows in B.

select * from a LEFT OUTER JOIN b on a.a = b.b;
select a.*, b.*  from a,b where a.a = b.b(+);

a |  b
--+-----
1 | null
2 | null
3 |    3
4 |    4

Right outer join

A right outer join will give all rows in B, plus any common rows in A.

select * from a RIGHT OUTER JOIN b on a.a = b.b;
select a.*, b.*  from a,b where a.a(+) = b.b;

a    |  b
-----+----
3    |  3
4    |  4
null |  5
null |  6

Full outer join

A full outer join will give you the union of A and B, i.e. all the rows in A and all the rows in B. If something in A doesn't have a corresponding datum in B, then the B portion is null, and vice versa.

select * from a FULL OUTER JOIN b on a.a = b.b;

 a   |  b
-----+-----
   1 | null
   2 | null
   3 |    3
   4 |    4
null |    6
null |    5

Sql – the difference between UNION and UNION ALL

UNION removes duplicate records (where all columns in the results are the same), UNION ALL does not.

There is a performance hit when using UNION instead of UNION ALL, since the database server must do additional work to remove the duplicate rows, but usually you do not want the duplicates (especially when developing reports).

To identify duplicates, records must be comparable types as well as compatible types. This will depend on the SQL system. For example the system may truncate all long text fields to make short text fields for comparison (MS Jet), or may refuse to compare binary fields (ORACLE)

UNION Example:

SELECT 'foo' AS bar UNION SELECT 'foo' AS bar

Result:

+-----+
| bar |
+-----+
| foo |
+-----+
1 row in set (0.00 sec)

UNION ALL example:

SELECT 'foo' AS bar UNION ALL SELECT 'foo' AS bar