sql qurery how to set null value

Question

0.00/5 (No votes)

See more:

hi expert!!!!

i create one query for select data and this query select only 5 field of table,

this query also use for fill dataTable, in dataTable all column present. so its give error.

so how can use select query with only column destination, i don't select all column data because of heavy datatable.

in shot query for select null value from any particular "column".

Posted 6-Oct-12 0:25am

Member 9444634

Add a Solution

Comments

Vijay Walunj,Navi mumbai 6-Oct-12 6:30am

i didn't get u.can you able to explain your problem with example

Member 9444634 6-Oct-12 6:36am

for example: a, b,c,d,e this is five column

and i want to select only data of a and d.
and set null to b,c,e column.

Member 9444634 6-Oct-12 6:37am

just like this:

select a,b=null,c=null,d,e=null from table_name

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2012-10-06T00:56:00

Solution 1

Try:

SQL

SELECT a AS a, null AS b, null AS c, d AS d FROM myTable

Posted 6-Oct-12 0:56am

OriginalGriff

Comments

Member 9444634 6-Oct-12 7:09am

thx....

OriginalGriff 6-Oct-12 7:17am

You're welcome!

(BTW: try to avoid txtspeak here - it seriously annoys some people, and can affect how your questions or comments are received)

psychic6000 6-Oct-12 7:43am

i would say, why are you still selecting those columns at all... just use
select a,d from my table

OriginalGriff 6-Oct-12 7:47am

Probably, because he needs to have blank columns in his table and he is using the returned data as a Data Source.

Member 9444634 6-Oct-12 8:10am

ya, i want only definition of column so...