MS-SQL Server querry question

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SQL-Server-2008

In table i have column that is type of varchar(n), and it's not primary/foreign key.
Now, what I need is sql querry that will filter and select all the records in that table like:

(pseudo) select all from table1 where table1.column2 startswith(aa to bz).
aa and bz are first two leters of any record that contains data for that column, and passed as parameters.

First two letters of all selected records then should look like:
aa ab ac ... bd bt bz.

Any suggestions would be appreciated!

Posted 11-Jan-12 10:55am

ZGelic

Updated 11-Jan-12 11:13am

Wonde Tadesse

v2

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2 solutions

Solution 1

This might be one solution

SQL

SELECT SUBSTRING(table1.column2,1,2) as FirstTwoLetters FROM table1
WHERE table1.column2 LIKE 'a%' OR table1.column2 LIKE 'b%' -- ... OR table1.column2 LIKE 'z%'

Here is more about LIKE [^] and SUBSTRING [^] operator and function

Posted 11-Jan-12 11:12am

Wonde Tadesse

Updated 11-Jan-12 11:29am

v2

Comments

ZGelic 11-Jan-12 17:19pm

yes but what if range is greater than from a% to b% for example from a% to t% then output should look like
aa, ab, ac, ... ba, bc, bb... ca, cb, cc..... ta, tb, tc,... tz (first two starting letters)

Wonde Tadesse 11-Jan-12 17:20pm

That's what the SUBSTRING do. It only selects the first two letters from the column.

ZGelic 11-Jan-12 17:24pm

your querry would return only ones starting with a and t and not for all the letters in between a and t...
anyway thanks

Wonde Tadesse 11-Jan-12 17:33pm

It's just adding similar OR conditions from a - z. Basically this can be one solution.See the updated answer.

ZGelic 11-Jan-12 17:49pm

In that case how many combinations of query exists? And each one should be stored as stored procedure... User can pass any two letters for (select from) and any two letters for (select to). I had in mind something like( I don't know if it is possible):
select * from table1 where SUBSTRING(table1.column2,1,2)<@param1 and SUBSTRING(table1.column2,1,2)>@param2

Wonde Tadesse 11-Jan-12 18:14pm

If you want to incorporate with SP, then the idea will be much simple. It will not be the same way of the answer. In anycase this will be your assignment.Cheers

ZGelic 11-Jan-12 18:16pm

Thanks anyway! Cheers

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ZGelic · Accepted Answer · 2012-01-12T11:40:00

Solution 2

if someone need solution for this or similar problem...

SQL

select * from table1 where SUBSTRING(table1.column2,1,2)>@param1 and SUBSTRING(table1.column2,1,2)<@param2

Posted 12-Jan-12 11:40am

ZGelic

Comments

Wonde Tadesse 12-Jan-12 18:01pm

It seems that you accomplished your task. 5+