Working with STRING functions in SQL server

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Hi Folks!!

I have a column 'EmployeeAddress'.I want to get the only employee 'House Number' from below address column.

employeeAddress
---------------------
245 1st main,Silkboard,Bangalore-560068------Here '245' is House Number
243 BTM,Bangalore-560068
653 Koramangala,Bangalore-560079
8 12th main,1st cross,Adugodi,Bangalore
1 electronic city,Bangalore------------------Here '1' is House number
5 electronic city,Bangalore------------------Here '5' is House number
8 electronic city,Bangalore------------------Here '8' is House number

Can anyone help me on this? Thanks in Advance..

What I have tried:

I tried like below .

SELECT LEFT(employeeAddress,charindex(' ',employeeAddress)-1) FROM Table

But i am getting below error

Msg 537, Level 16, State 2, Line 1
Invalid length parameter passed to the LEFT or SUBSTRING function.

Posted 4-May-16 21:31pm

Member 11931581

Updated 4-May-16 21:53pm

v2

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2 solutions

Solution 1

Write simple query:

SELECT SUBSTRING(employeeAddress, 1, CHARINDEX(' ', employeeAddress, 1) - 1) FROM Table

Posted 4-May-16 21:42pm

deepankarbhatnagar

Updated 4-May-16 21:43pm

v2

Comments

Zafar Sultan 5-May-16 3:57am

This won't work if the address field has preceding blank spaces. For example ' 2508 Sample Address'. See my solution below.

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Zafar Sultan · Accepted Answer · 2016-05-04T21:53:00

First of all this is not the way to store data. If you need 'House Number' from your table you have to store it as 'House Number'. Still, if you are unable to do that you will have to rely on finding the substring from your address field. Now, the problem is we will get the first index of ' ' and find the substring. But what if the address has preceding spaces? You will have to trim the blank spaces from the left of your string. I would recommend you to google 'SUBSTRING' and 'LTRIM' functions for SQL Server before moving ahead. Then only try this query for your understanding:

SQL

DECLARE @address VARCHAR(50) = '   2508 Sample Address'
SELECT SUBSTRING(LTRIM(@address),1, CHARINDEX(' ', LTRIM(@address)))

Now, for your requirement, you should write:

SQL

SELECT SUBSTRING(LTRIM(employeeAddress),1, CHARINDEX(' ', LTRIM(employeeAddress))) AS [House Number] FROM [YourTableName]