I need to create Dynamic columns for local table. This is my example code
Declare #ColumnsTable AS varchar(max) = '"column_a" varchar(100),"column_b" varchar(100), "column_c" varchar(100)'
Declare #Table AS Table (#ColumnsTable)
Select * from #Table
I can't use EXEC
Related
Does anyone know why this query doesn't work? How to add the table variable itemId as parameter to the exec statement? Thanks
DECLARE #test TABLE
(
itemId UNIQUEIDENTIFIER,
finalAmount DECIMAL
);
INSERT INTO #test EXEC [GetItems]
DECLARE #sql NVARCHAR(max)
DECLARE #param NVARCHAR(max)
SET #param = N'select itemId from #test'
SELECT #sql = 'EXEC [InsertTestItem]'+' ' + #param;
SELECT #sql
EXEC(#sql)
See a full working example in SQL Server, you should be able to run each block one after the other to see that its selected everything from your table type that you pass in to the stored proc
-- Create the Table type that we will use in the stored proc------------------------
IF NOT EXISTS (SELECT * FROM sys.types WHERE is_table_type = 1 AND name = 'MyIdTableType')
BEGIN
PRINT 'Creating type [dbo].[MyIdTableType]'
CREATE TYPE [dbo].MyIdTableType AS TABLE (
Id BIGINT
)
END
GO
-- Create a stored proc that uses it ------------------------
CREATE PROCEDURE [dbo].[UsMyTabelType]
#IdsTable AS [dbo].MyIdTableType Readonly
AS
BEGIN
-- Now you have the data you can use it like any normal table and join on it
SELECT * FROM #IdsTable
END
GO
-- Lets test it out ------------------------
DECLARE #myIds AS MyIdTableType
INSERT INTO #myIds (Id)
VALUES
(1),
(2),
(3)
EXEC dbo.UsMyTabelType #IdsTable = #myIds
I am using SQL Server 2008 R2. I am having some problems finding an effective coding pattern for SQL which supports code re-usability as well as flexibility. By re-usability, what I mean is keeping SQL queries in Stored Procedures and User Defined Functions.
Now, if I choose Stored Procedures, I will be sacrificing its usability in a query directly. If I choose User Defined Functions, I won't be able to use DML statements.
For example, suppose I created a Stored Procedures which inserts one contact record. Now, if I am having a table which can act as a source of multiple contact records, all I am left with are either WHILE loops or CURSORs, which is clearly not a recommended option, due to its performance drawbacks. And due to the fact that DML statements are not allowed in User Defined Functions, I simply cannot use them for this purpose.
Although, If I am not concerned with code re-usability, then instead of using Stored Procedures I can surely use same set of queries again and again to avoid while loops.
What pattern should I follow?
Here is a similar Stored Procedures:-
ALTER Proc [dbo].[InsertTranslationForCategory]
(
#str nvarchar(max),
#EventId int,
#CategoryName NVarchar(500),
#LanguageId int,
#DBCmdResponseCode Int Output,
#KeyIds nvarchar(max) Output
)as
BEGIN
DECLARE #XmlData XML
DECLARE #SystemCategoryId Int
DECLARE #CategoryId Int
Declare #Counter int=1
Declare #tempCount Int
Declare #IsExists int
Declare #TranslationToUpdate NVarchar(500)
Declare #EventName Varchar(200)
declare #Locale nvarchar(10)
declare #Code nvarchar(50)
declare #KeyName nvarchar(200)
declare #KeyValue nvarchar(500)
select #Locale=locale from languages where languageid = #LanguageId
SET #DBCmdResponseCode = 0
SET #KeyIds = ''
select #EventName = eventName from eventLanguages
where eventID = #EventId
--BEGIN TRY
Select #SystemCategoryId=CategoryId from SystemCategories where Name=rtrim(ltrim(#CategoryName))
Select #CategoryId=CategoryId from Categories where Name=rtrim(ltrim(#CategoryName)) and EventId=#EventId
if (#str='deactivate')
Begin
Delete from Codetranslation where CategoryId=#CategoryId
Update Categories set [Status]=0, Isfilter=0 where CategoryId=#CategoryId and Eventid=#EventId
Set #DBCmdResponseCode=2
return
End
set #XmlData=cast(#str as xml)
DECLARE #temp TABLE
(
Id int IDENTITY(1,1),
Code varchar(100),
Translation varchar(500),
CategoryId int
)
Insert into #temp (Code,Translation,CategoryId)
SELECT
tab.col.value('#Code', 'varchar(200)'),
tab.col.value('#Translation', 'varchar(500)'),#SystemCategoryId
FROM #XmlData.nodes('/Data') AS tab (col)
select #tempCount=Count(*) from #temp
if(IsNull(#CategoryId,0)>0)
Begin
While (#Counter <= #tempCount)
Begin
Select #IsExists= count(sc.categoryid) from #temp t Inner Join SystemCodetranslation sc
On sc.categoryid=t.CategoryId
where ltrim(rtrim(sc.code))=ltrim(rtrim(t.code)) and ltrim(rtrim(sc.ShortTranslation))=ltrim(rtrim(t.Translation))
and t.Id= #Counter
print #IsExists
Select #Code = Code , #KeyValue = Translation from #temp where id=#counter
set #KeyName = ltrim(rtrim(#EventName)) + '_' + ltrim(rtrim(#CategoryName)) + '_' + ltrim(rtrim(#Code)) + '_LT'
exec dbo.AddUpdateKeyValue #EventId,#Locale, #KeyName,#KeyValue,NULL,12
select #KeyIds = #KeyIds + convert(varchar(50),keyvalueId) + ',' from dbo.KeyValues
where eventid = #EventId and keyname = #KeyName and locale = #Locale
set #KeyName = ''
set #KeyValue = ''
Set #Counter= #Counter + 1
Set #IsExists=0
End
End
--- Inser data in Codetranslation table
if(isnull(#CategoryId,0)>0)
Begin
print #CategoryId
Delete from codetranslation where categoryid=#CategoryId
Insert into codetranslation (CategoryId,Code,LanguageId,ShortTranslation,LongTranslation,SortOrder)
SELECT
#CategoryId,
tab.col.value('#Code', 'varchar(200)'), #LanguageId,
tab.col.value('#Translation', 'varchar(500)'),
tab.col.value('#Translation', 'varchar(500)'),0
FROM #XmlData.nodes('/Data') AS tab (col)
Update Categories set [Status]=1 where CategoryId=#CategoryId and Eventid=#EventId
End
Set #DBCmdResponseCode=1
set #KeyIds = left(#KeyIds,len(#KeyIds)-1)
END
You can use table variable parameter for your user defined functions.
following code is an example of using table variable parameter in stored procedure.
CREATE TYPE IdList AS TABLE (Id INT)
CREATE PROCEDURE test
#Ids dbo.IdList READONLY
AS
Select *
From YourTable
Where YourTable.Id in (Select Id From #Ids)
End
GO
In order to execute your stored procedure use following format:
Declare #Ids dbo.IdList
Insert into #Ids(Id) values(1),(2),(3)
Execute dbo.test #Ids
Edit
In order to return Inserted Id, I don't use from Table Variable Parameter. I use following query sample for this purpose.
--CREATE TYPE NameList AS TABLE (Name NVarChar(100))
CREATE PROCEDURE test
#Names dbo.NameList READONLY
AS
Declare #T Table(Id Int)
Insert Into YourTable (Name)
OUTPUT Inserted.Id Into #T
Select Name
From #Names
Select * From #T
End
GO
I'm writing a stored procedure in SQL Server 2005, at given point I need to execute another stored procedure. This invocation is dynamic, and so i've used sp_executesql command as usual:
DECLARE #DBName varchar(255)
DECLARE #q varchar(max)
DECLARE #tempTable table(myParam1 int, -- other params)
SET #DBName = 'my_db_name'
SET q = 'insert into #tempTable exec ['+#DBName+'].[dbo].[my_procedure]'
EXEC sp_executesql #q, '#tempTable table OUTPUT', #tempTable OUTPUT
SELECT * FROM #tempTable
But I get this error:
Must declare the scalar variable "#tempTable".
As you can see that variable is declared. I've read the documentation and seems that only parameters allowed are text, ntext and image. How can I have what I need?
PS: I've found many tips for 2008 and further version, any for 2005.
Resolved, thanks to all for tips:
DECLARE #DBName varchar(255)
DECLARE #q varchar(max)
CREATE table #tempTable(myParam1 int, -- other params)
SET #DBName = 'my_db_name'
SET #q = 'insert into #tempTable exec ['+#DBName+'].[dbo].[my_procedure]'
EXEC(#q)
SELECT * FROM #tempTable
drop table #tempTable
SQL Server 2005 allows to use INSERT INTO EXEC operation (https://learn.microsoft.com/en-us/sql/t-sql/statements/insert-transact-sql?view=sqlallproducts-allversions).
You might create a table valued variable and insert result of stored procedure into this table:
DECLARE #tempTable table(myParam1 int, myParam2 int);
DECLARE #statement nvarchar(max) = 'SELECT 1,2';
INSERT INTO #tempTable EXEC sp_executesql #statement;
SELECT * FROM #tempTable;
Result:
myParam1 myParam2
----------- -----------
1 2
or you can use any other your own stored procedure:
DECLARE #tempTable table(myParam1 int, myParam2 int);
INSERT INTO #tempTable EXEC [dbo].[my_procedure];
SELECT * FROM #tempTable;
#tempTable's scope is limited to the current procedure.
You could replace the #tempTable with a global temporary table (i.e. ## table), but be very careful with the scope of that table and be sure to drop it when the procedure ends
I have the following part of a query:
Where id in (1,2,3) And country in('France','Italy','Spain')
I want to declare 2 variables and do it like:
Where id in (idsVaraible) And country in(countriesVriable)
It is more like substituting sql code in sql code to make my long query readable and more useful, is there any way to do this?
I think it's more like eval in java script.
Well if you need to pass these sets in as strings, one way would be dynamic SQL:
DECLARE #ids VARCHAR(32) = '1,2,3';
DECLARE #countries VARCHAR(2000) = 'France,Italy,Spain';
DECLARE #sql NVARCHAR(MAX) = N'SELECT ... FROM ...
WHERE id IN (' + #ids + ') AND country IN ('''
+ REPLACE(#countries, ',',''',''') + ''');';
PRINT #sql;
-- EXEC sp_executesql #sql;
Another way would be table-valued parameters. First create these types in your database:
CREATE TYPE dbo.TVPids AS TABLE(ID INT);
CREATE TYPE dbo.TVPcountries AS TABLE(Country VARCHAR(255));
Now your stored procedure can take these types as input:
CREATE PROCEDURE dbo.whatever
#i dbo.TVPids READONLY,
#c dbo.TVPcountries READONLY
AS
BEGIN
SET NOCOUNT ON;
SELECT ... FROM dbo.yourtable AS t
INNER JOIN #i AS i ON i.ID = t.ID
INNER JOIN #c AS c ON c.country = t.country;
END
GO
Now your app can pass these two parameters in as sets (e.g. from a DataTable) instead of building a comma-separated string or handling multiple parameters.
Please try using temp table variables:
DECLARE #tblID as TABLE(ID INT)
DECLARE #tblCountry as TABLE(Country NVARCHAR(50))
INSERT INTO #tblID VALUES (1),(2),(3)
INSERT INTO #tblCountry VALUES ('France'),('Italy'),('Spain')
WHERE id in (select ID from #tblID) And country in(select Country from #tblCountry)
I have a table variable in SQL Server 2008
DECLARE #specsAndModel TABLE
(
specName VARCHAR(50)
,specVal VARCHAR(50)
)
INSERT INTO #specsAndModel
VALUES('[modelNumber]', 'F00-B4R')
Then, I later build a string called #query, which I ultimately try to pass into EXECUTE, as in the following example:
DECLARE #query NVARCHAR(MAX);
SET #query = 'SELECT specName, specVal FROM #specsAndModel'
EXECUTE(#query)
However, SQL Server gives me the error message: Must declare the table variable "#specsAndModel".
After searching around, I think this might be related to the execution context, but I haven't been able to resolve the problem.
Is it even possible for me to use a table variable in a call to the execute function?
The table you are creating is a table variable which is not available outside of its initial scope. There are a few ways to fix this:
Create a Global Temp Table (Disclaimer: this can cause problems if more that one user attempts to run this at the same time.):
create table ##specsAndModel
(
specName VARCHAR(50)
,specVal VARCHAR(50)
)
INSERT INTO ##specsAndModel
VALUES('[modelNumber]', 'F00-B4R')
DECLARE #query NVARCHAR(MAX);
SET #query = 'SELECT specName, specVal FROM ##specsAndModel'
EXECUTE(#query)
Create a Local Temp Table instead of global:
create table #specsAndModel
(
specName VARCHAR(50)
,specVal VARCHAR(50)
)
INSERT INTO #specsAndModel
VALUES('[modelNumber]', 'F00-B4R')
DECLARE #query NVARCHAR(MAX);
SET #query = 'SELECT specName, specVal FROM #specsAndModel'
EXECUTE(#query)
Execute the create table inside of your dynamic SQL (ugly):
DECLARE #query NVARCHAR(MAX);
SET #query = 'DECLARE #specsAndModel TABLE
(
specName VARCHAR(50)
,specVal VARCHAR(50)
)
INSERT INTO #specsAndModel
VALUES(''[modelNumber]'', ''F00-B4R'')
SELECT specName, specVal FROM #specsAndModel'
exec(#query)
Instead of using a temp table, create an actual table and then drop it when done (Disclaimer: this can cause problems if more that one user attempts to run this at the same time.):
create TABLE specsAndModel
(
specName VARCHAR(50)
,specVal VARCHAR(50)
)
INSERT INTO specsAndModel
VALUES('[modelNumber]', 'F00-B4R')
DECLARE #query NVARCHAR(MAX);
SET #query = 'SELECT specName, specVal FROM specsAndModel'
EXECUTE(#query)
drop table specsAndModel
Here is an link to a discussion about temp tables and table variables:
Should I use a #temp table or a #table variable?
Edit: You can pass in a table variable using sp_executesql:
create type specsAndModel as table (
specName VARCHAR(50)
,specVal VARCHAR(50)
)
go
declare #t specsAndModel
insert #t VALUES('[modelNumber]', 'F00-B4R')
exec sp_executesql N'select specName, specVal from #var', N'#var specsAndModel readonly', #t
Using either the global ##temp tables and a permanent table run risks in that if more than one users attempts to run the process, there could be conflicts.
You are safer using either a local #temp table or passing the table variable using sp_executesql.
You also have to create your table variable inside the in the string.
DECLARE #query NVARCHAR(MAX);
SET #query = 'DECLARE #specsAndModel TABLE ( specName VARCHAR(50) ,specVal VARCHAR(50))'
SET #Query = #Query + ' INSERT INTO #specsAndModel VALUES(''modelNumber'',''abcd''); SELECT specName, specVal FROM #specsAndModel'
EXEC (#query)