I've been trying all day long to merge a simple query result of a single row to another dynamic query with a single row. To briefly explain what I've got is as follows:
I have a query as a result of a complex SELECT that returns a single row of two columns:
HistoryDate |TotalMarketValue
2014-08-31 1195687865.20
Then I have another dynamic query which returns a single row with dynamic number of columns, where I do not know the name nor number of columns that would be returned, which I execute something like this:
exec sp_executesql #query
So basically what I need to do is something like:
SELECT HistoryDate, SUM(TotalMarketValue) FROM MyComplexTable, exec sp_executesql #query
Obviously the above syntax is wrong as the exec part will not allow me to do a CROSS JOIN. I've tried various other ways like attempting to populate the dynamic query results to a temporary table, but then again it doesn't allow me to create a table without specifying the number of columns. I'm just missing that point.
Can somebody let me know how I could get the dynamic query as part of the merged query?
You could use a table variable and insert the results of the query into it. Then select the data from the table variable and your select statement with a union.
DECLARE #query NVARCHAR(MAX)
SET #query = 'SELECT HistoryDate, SUM(TotalMarketValue)'
DECLARE #Results TABLE(cola DATETIME, colb DECIMAL(18,2))
INSERT INTO #Results
exec sp_executesql #query
SELECT * FROM #Results
UNION
SELECT HistoryDate, SUM(TotalMarketValue)
Related
I have a query I build into a NVARCHAR due to an issue between SQL Server and a linked Oracle server forcing me to use OpenQuery. It works fine and I get the results I need when I run exec (#OPENQUERYFULL).
My results are a single column of numbers I need for another query. I would like to be able to use those results as an "IN ()" statement or as a JOIN but what I have tried so far has failed.
Is there a way to use the results of an exec query directly in another query?
UPDATE:
To be clear I was trying to avoid using a temp table.
Declare a table variable and insert the results of the other SP into that variable:
declare #results table (
numbers int
);
GO
insert into #results(numbers)
exec otherSP
Then you perform your join on the table variable.
You can send the linked server query with OPENQUERY instead of 'exec' by building a dynamic query with OPENQUERY and a join. It just takes some annoying string escaping, eg:
declare #oracleSQL nvarchar(max) = 'select 1 a, ''hello'' b from dual';
declare #sql nvarchar(max) = concat(
N'
with q as
(
SELECT * FROM OPENQUERY (OracleSvr, N''', replace(#oracleSQL,'''','''''') ,N''')
)
select *
from q
cross join sys.objects o
')
print #sql
exec ( #sql )
But as you can see the resulting code is a bit complicated. So I would almost always just use a temp table.
I am currently using code similar to the following:
SET #Query = 'SELECT * INTO #Temp FROM MyTable'
EXEC sp_executesql #Query
Obviously, this does not work. Until now, I have been getting around this problem by using global temporary tables within my dynamic sql. However, this is not an option once the stored procedure is released to users, as their global temp tables would conflict with one another.
How might I get around this issue? I must specify that the structure of the table MyTable is unknown, so creating the temp table outside of the dynamic sql is (presumably?) not an option.
Edit: Apologies if I was not specific enough with exactly what I am trying to achieve - I thought it would be best to keep this question as relevent to the actual issue as possible.
Obviously, the string that I am trying to execute is not fixed. It is instead constructed so that the table, from which the data is being retrieved, may be specified. Although still not overly complex, the actual query string that I am using is more along the lines of
#Query = CONCAT('SELECT * INTO #Temp FROM ', #Environment, '.[schema].', #Table)
Hopefully this sheds more light on the problem?
Few points:
1. If you want to store the output of dynamic sql into temp table, you need to create the temp table structure first(with CREATE TABLE #TEMP script) and then you can insert data by doing something like below:
INSERT INTO #TEMP EXEC sp_executesql #Query
This will populate data into temp table with all properties of local temp table.
Seeing your query, it does not look like you have a need of dynamic sql unless you are forming some clause like where clause dynamically.
Let me know if this helps.
Couldn't you do something like this:
declare #query nvarchar(4000) = '
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N''[dbo].[temp]'') AND type in (N''U''))
begin
drop table temp
end
Select top 2 *
into temp
from sys.databases
'
exec sp_executesql #query
Select * from temp
With Select into you don't need to know the structure of your query:
https://www.w3schools.com/sql/sql_select_into.asp
Just as an idea.
I have this query in SQL Server:
select column
from table_53;
Now, I want to get this 53 from another table, so what I want to do is something like this:
select column
from table_(select id from table2);
Is there any way to do this in SQL Server?
This is definitely not the way SQL thinks and works. Maybe your suggested approach can be mimicked by way of writing stored procedures in which you create SQL-statements which are then evaluated. However, this will not be very efficient.
A better approach would be to store the values of all your individual separate tables into one master table and mark them in a separate column tblid with their number (e.g. 53). Then you can always filter them from this master table by looking for this tblid.
You need dynamic sql query here.
declare #sqlQuery = 'select column
from table_(';
set #sqlQuery = #sqlQuery + 'select id from table2)';
EXEC (#sqlQuery)
Note :- One of cons of using dynamic sql query is sql injection. I would suggest to have better table structure or try to used parameterized query.
Yes, you can, but using something like this:
DECLARE #ID INT;
DECLARE #QUERY NVARCHAR(MAX);
SELECT #ID = ID FROM TABLE_2;
--IF #ID EQUALS 53 THEN
SET #QUERY = 'SELECT COLUMN FROM TABLE_' + CAST(#ID AS NVARCHAR(10));
-- #QUERY EQUALS TO 'SELECT COLUMN FROM TABLE_53'
EXEC (#QUERY);
I'm writing a stored procedure. I have a string which contains an sql query. For example:
DECLARE #sql nvarchar(max)
SET #sql = (N'SELECT pkOrderID FROM Orders')
(Just to note: this isn't what the select statement looks like. This is just an example of what I mean) I then want to execute the string and put the result in a temporary table E.g. #tempTable. I know EXEC(#sql) exists but not sure if it will do me any good in this situation. The other twist is that I do not know the names of all the columns in the returned #sql so the temp table #tempTable needs to be created dyanmically based off the return from #sql. Thanks for any help.
I think you could use SELECT INTO to do what you want but it would mean updating your string:
DECLARE #sql nvarchar(max)
SET #sql = (N'SELECT frompkOrderID INTO #tmporders FROM Orders')
then you should be able to run EXEC #sql to create the table
more information about SELECT INTO here : http://msdn.microsoft.com/en-au/library/ms188029.aspx
There is no simple way to do this. The problem with #JanR's solution is that the #tmporders table will be out of scope to the script that calls your stored procedure (ie It will produce an error like "Invalid object name '#rtmporders'"
One alternative is to use a global temp table (eg ##tmporders).
So your SP might look like this:
CREATE PROCEDURE TestSP
AS
BEGIN
SELECT pkOrderID INTO ##tmporders FROM Orders
END
GO
And the calling script might be like:
EXEC TestSP
SELECT * FROM ##temporders
I have a dynamic query #strQuery which on executing gives a result with lots of column.
I want to insert the result from this dynamic query into a temporary table .
I am doing this because I want to perform some filtering on the temporary table and get required result .
A similar question was asked on previous thread HERE
in which a temporary table is created first and then data inserted using INSERT INTO.
I want to avoid this step due to long list of columns and also the datatypes of fields is not known to me.
select * into #tmh from
exec(#strQuery)
Error Message
Incorrect syntax near the keyword 'exec'.
How to do this ? Is it possible to be done in this way ? If not , please specify some other alternative to get store the result on executing dynamic query into a table.
Thanks.
I have faced this situation before and here is what I did:
DECLARE #strQuery nVarchar(100)
SET #strQuery='SELECT * into [tempdb].[dbo].[temptable] FROM YourTable'
EXECUTE sp_executesql #strQuery
SELECT * FROM [tempdb].[dbo].[temptable]
DROP TABLE [tempdb].[dbo].[temptable]
It works fine. Don't ask me why a FQ table name and not #temptable. I have no idea. It does not work. The only way I could get it working was using [tempdb].[dbo].[temptable]
proceed like this
select t1.name,t1.lastname from(select * from table)t1.
where "select * from table" is your dyanmic query. which will return result which you can use as temp table t1 as given in example .
You can use variables in your current execution context, set by the Dynamic SQL with the OUTPUT option. Sample code below.
DECLARE #Amount AS MONEY
DECLARE #SQL AS NVARCHAR(1000)
SET #Amount = NULL
SET #SQL = ('SELECT #amt=100' )
EXECUTE sp_executeSQL #SQL, N'#amt MONEY OUTPUT', #amt=#Amount OUTPUT
SELECT #Amount
Yes you can make a new dynamic query containing the original query with the insert like this:
declare #strNewQuery varchar(max)
set #strNewQuery ='select * into #tmh from ('+#strQuery+') as t'
exec(#strNewQuery)
I used this to work around - with out dynamic query
This uses a table variable to receive data to procedure
Even joins can be applied to it
select * into #itemPhantom from #tbl_items_upload
select * from #itemPhantom
select #itemPhantom.itemreference from #itemPhantom left join phantom on phantom.name=#itemPhantom.PhantomName