How Do I Use A Variable In A Select Query

Nov 10, 2005

How do i use a variable in a select query
---------------
Declare @host varchar(20)
set @host = '"Fab"'

Declare @DB_name varchar(25)
set @DB_name = 'config_mpl_18May2005'

Declare @Full_Path varchar(60)
set @Full_Path = @host + '.' + @DB_name + '.dbo.cfg_dn'
Print '@Full_Path = ' + @Full_Path

------ cfg_dn ----------

Print 'Starting on CFG DN'

select * from @Full_Path

where dbid = 5441 or dbid = 5389 or dbid = 562


Error:

Server: Msg 137, Level 15, State 2, Line 16

Must declare the variable '@Full_Path'.

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SQL Server 2012 :: How To Pull Value Of Query And Not Value Of Variable When Query Using Select Top 1 Value From Table

Jun 26, 2015

how do I get the variables in the cursor, set statement, to NOT update the temp table with the value of the variable ? I want it to pull a date, not the column name stored in the variable...

create table #temptable (columname varchar(150), columnheader varchar(150), earliestdate varchar(120), mostrecentdate varchar(120))
insert into #temptable
SELECT ColumnName, headername, '', '' FROM eddsdbo.[ArtifactViewField] WHERE ItemListType = 'DateTime' AND ArtifactTypeID = 10
--column name
declare @cname varchar(30)

[code]...

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Declaring A Table Variable Within A Select Table Joined To Other Select Tables In Query

Oct 15, 2007

Hello,

I hope someone can answer this, I'm not even sure where to start looking for documentation on this. The SQL query I'm referencing is included at the bottom of this post.

I have a query with 3 select statements joined together like tables. It works great, except for the fact that I need to declare a variable and make it a table within two of those 3. The example is below. You'll see that I have three select statements made into tables A, B, and C, and that table A has a variable @years, which is a table.

This works when I just run table A by itself, but when I execute the entire query, I get an error about the "declare" keyword, and then some other errors near the word "as" and the ")" character. These are some of those errors that I find pretty meaningless that just mean I've really thrown something off.

So, am I not allowed to declare a variable within these SELECT tables that I'm creating and joining?

Thanks in advance,
Andy



Select * from

(

declare @years table (years int);

insert into @years

select

CASE

WHEN month(getdate()) in (1) THEN year(getdate())-1

WHEN month(getdate()) in (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) THEN year(getdate())

END

select

u.fullname

, sum(tx.Dm_Time) LastMonthBillhours

, sum(tx.Dm_Time)/((select dm_billabledays from dm_billabledays where Dm_Month = Month(GetDate()))*8) lasmosbillingpercentage

from

Dm_TimeEntry tx

join

systemuserbase u

on

(tx.owninguser = u.systemuserid)

where

Month(tx.Dm_Date) = Month(getdate())-1

and

year(dm_date) = (select years from @years)

and tx.dm_billable = 1

group by u.fullname

) as A

left outer join

(select

u.FullName

, sum(tx.Dm_Time) Billhours

, ((sum(tx.Dm_Time))

/

((day(getdate()) * ((5.0)/(7.0))) * 8)) perc

from

Dm_TimeEntry tx

join

systemuserbase u

on

(tx.owninguser = u.systemuserid)

where

tx.Dm_Billable = '1'

and

month(tx.Dm_Date) = month(GetDate())

and

year(tx.Dm_Date) = year(GetDate())

group by u.fullname) as B

on

A.Fullname = B.Fullname

Left Outer Join

(

select

u.fullname

, sum(tx.Dm_Time) TwomosagoBillhours

, sum(tx.Dm_Time)/((select dm_billabledays from dm_billabledays where Dm_Month = Month(GetDate()))*8) twomosagobillingpercentage

from

Dm_TimeEntry tx

join

systemuserbase u

on

(tx.owninguser = u.systemuserid)

where

Month(tx.Dm_Date) = Month(getdate())-2

group by u.fullname

) as C

on

A.Fullname = C.Fullname

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I am attempting to sort the results of a query executed against a table variable in descending order. The data is being inserted into the table variable as expected, however when I attempt to order the results in descending order, the results are incorrect. I have included the code as well as the result set.


DECLARE @tblCustomRange AS TABLE

(

RecordID INTEGER IDENTITY(1,1),

RangeMonth INTEGER,

RangeDay INTEGER

)


DECLARE @Month INTEGER

DECLARE @Day INTEGER


-- Initialize month and day variables.

SET @Month = 8

SET @Day = 11

-- Insert records into the table variable.
INSERT INTO @tblCustomRange

(RangeMonth, RangeDay) VALUES (1,2)

INSERT INTO @tblCustomRange

(RangeMonth, RangeDay) VALUES (1,27)

INSERT INTO @tblCustomRange

(RangeMonth, RangeDay) VALUES (6,10)

INSERT INTO @tblCustomRange

(RangeMonth, RangeDay) VALUES (9,22)

INSERT INTO @tblCustomRange

(RangeMonth, RangeDay) VALUES (12,16)


-- Select everything from the table variable ordering the results by month, day in
-- descending order

SELECT * FROM @tblCustomRange

WHERE (RangeMonth < @Month) OR

(RangeMonth = @Month AND RangeDay <= @Day)

ORDER BY RangeMonth, RangeDay DESC



I am getting the following resultset:


RecordID RangeMonth RangeDay

----------- ----------- -----------

2 1 27

1 1 2

3 6 10



I am expecting the following resultset:


RecordID RangeMonth RangeDay

----------- ----------- -----------

3 6 10

2 1 27

1 1 2

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@Decision varchar(1) Null
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Decision2=(select * from tbldecision where reader=2)
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DECLARE @VALUE_KEEP NVARCHAR(120),

@COLUMN_NAME NVARCHAR(120)



SET @COLUMN_NAME = (SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'CONTACTS' AND COLUMN_NAME = 'FIRSTNAME')



SET @VALUE_KEEP = (SELECT @COLUMN_NAME FROM CONTACTS WHERE CONTACT_ID = 3)



PRINT @VALUE_KEEP

PRINT @COLUMN_NAME



RESULTS

-------------------------------------------------------------------------------------------

FirstName <-----------@VALUE_KEEP

FirstName <-----------@COLUMN_NAME



SELECT @COLUMN_NAME FROM CONTACTS returns: FirstName

SELECT FirstName from Contacts returns: Brent



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DECLARE @PV INT;
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Dan

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USE WAREHOUSE
DECLARE
@COUNTER NUMERIC,
@TBLTTL CHAR(11)
SELECT @COUNTER = 1
WHILE (@COUNTER <40)
BEGIN
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SELECT *
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SELECT @COUNTER = @COUNTER +1
END

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Incorrect syntax near '@TBLTTL' (look at * above)

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Thx,

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I believe this is quite elementary but here goes



can you run a query like

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THANKS

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Dec 28, 2004

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