I have a Database and i want to execute few queries on it, and the results of the queries i.e. message, has to be comapared in my code if it is expected or not.
Please let me know how to capture the output of the SQL queries in any variable that can be used later in code for comparision.
Try the following Method :
Create a Table with the Same structure as of your Procedure output
Insert the Result of the SP Execution to the Table
Compare your Query result with the Table
Like this
CREATE PROCEDURE dbo.uSp_Temp
AS
SELECT
GETDATE() "MyDate"
DECLARE #T TABLE
(
MyDate DATE
)
INSERT INTO #T
EXEC uSp_Temp
SELECT
*
FROM #T
You can use Temp tables or temp variable to save the result set of a query.
Below is the sample for temp table
create table #temp (id int)
insert into #temp
select 1 as id
select * from #temp
Below is sample for Temp variable
declare #temp table (id int)
insert into #temp
select 1 as id
select * from #temp
Related
I have a variable called result of type Xml that contains one cell of Xml text. I cannot seem to use SELECT INTO to insert this value into another temp table.
SELECT #result
INTO dbo.xml_temp
Is there a way to achieve this?
If you want to insert the XML into an existing table, you have
VALUES
or INSERT INTO ... SELECT ...:
Try this:
DECLARE #tbl TABLE(ID INT IDENTITY,TargetColumn XML);
DECLARE #SomeXML XML ='<root>test</root>';
INSERT INTO #tbl VALUES(#SomeXML);
INSERT INTO #tbl(TargetColumn) SELECT #SomeXML;
SELECT * FROM #tbl;
If you really want to create a new temp table, your statement is just missing an alias (How should the new table know the column's name?):
SELECT #SomeXML AS SomeName INTO #tmpTable;
SELECT * FROM #tmpTable;
I want to know if it is possible to insert to a table from a specific column of result from a stored procedure?
Something like:
declare #temp as table(
id int
)
insert #temp
exec getlistofStudents --returns multiple columns
this is an example only, Thanks for the help..
You can take a 2 step approach. First INSERT INTO a #TempTable, then populate the #TempVariable with another INSERT INTO, selecting the single column.
DECLARE #temp AS TABLE
(
ID int
);
CREATE TABLE #tempTable1
(
Column1 int,
Column2 int
);
INSERT INTO #tempTable1
Exec getlistofStudents
INSERT INTO #temp
SELECT Column1 FROM #tempTable1
I have a stored procedure that returns 6 columns. But I want to take only 2 columns and insert them into my table variable.
DECLARE #CategoryTable TABLE(
CategoryId Int NOT NULL,
Name nvarchar(255) NOT NULL
)
INSERT INTO #CategoryTable EXEC [GetAllTenantCategories] #TenantId
When I run this
Column name or number of supplied values does not match table
definition
How to insert only specified columns from a stored procedure?
I do not want to use SELECT INTO as it is not supported by SQL Azure
Tried below and got Invalid object name '#Temp'
DECLARE #CategoryTable TABLE(
CategoryId Int NOT NULL,
Name nvarchar(255) NOT NULL
)
INSERT INTO #Temp EXEC [GetAllTenantCategories] 1
INSERT INTO #CategoryTable (CategoryId, Name)
SELECT CategoryId, Name from #Temp
DROP TABLE #Temp
You can create a temp table first and the INSERT the required columns in your table variable.
CREATE TABLE #temp
(
your columns and datatype
)
INSERT INTO #temp
EXEC [GetAllTenantCategories] #TenantId
Then you can,
DECLARE #CategoryTable TABLE(
CategoryId Int NOT NULL,
Name nvarchar(255) NOT NULL
)
INSERT INTO #CategoryTable (CategoryId, Name)
select CategoryId, Name from #temp
Also drop the #temp table,
DROP TABLE #temp
Refer the points taken from https://www.simple-talk.com/sql/performance/execution-plan-basics/
When the Estimated Plan is Invalid
In some instances, the estimated plan won't work at all. For example, try generating an estimated plan for this simple bit of code:
CREATE TABLE TempTable
(
Id INT IDENTITY (1 , 1 )
,Dsc NVARCHAR (50 )
);
INSERT INTO TempTable ( Dsc )
SELECT [Name]
FROM [Sales] .[Store] ;
SELECT *
FROM TempTable ;
DROP TABLE TempTable ;
You will get this error:
Invalid object name 'TempTable'.
The optimizer, which is what is used to generate Estimated Execution plans, doesn't execute T-SQL.
It does run the statements through the algebrizer , the process outlined earlier that is responsible for verifying the names of database objects. Since the query has not yet been executed, the temporary table does not yet exist. This is the cause of the error.
Running this same bit of code through the Actual execution plan will work perfectly fine.
Hope you got why your temp table approach not worked :) Because you might tried as T-SQL
We can use OPENQUERY
SELECT EmployeeID,CurrentSalary INTO #tempEmp
FROM OPENQUERY(LOCALSERVER,'Exec TestDB.dbo.spEmployee')
I want to crate a temp table from select query (My table has many columns, therefore I don't want to create the temp table manually)
I use the following query:
SELECT * INTO #TempTable
FROM MyTable
WHERE ...
If this query return empty rows, it won't create #TempTable. Hence, I cannot use this #TempTable for the next queries.
Is there a way to resolve this?
If the query SELECT * FROM MyTable WHERE ... in your code you posted:
SELECT *
INTO TempTable
FROM MyTable WHERE ...
returned no rows, it will create an empty TempTable, but it won't fill any data in it if there is no rows matched the WHERE clause. But it should create the table TempTable at least with the same structure as the MyTable and it will be empty.
For example this:
SELECT * INTO TempTable FROM MyTable WHERE 1 <> 1;
Will always create an empty table TempTable with the same structure as MyTable since the predicate 1 <> 1 is always false.
However you can declare it like so:
DECLARE #Temp TABLE(Field1 int, ...);
This is because you are dynamically creating and populating temporary table and not creating it explicitly.In such scenario, you must check the existence of the temp table in the beginning before you create one.
Try this:
IF OBJECT_ID('tempdb..#TempTable') IS NOT NULL
BEGIN
DROP TABLE #TempTable
END
SELECT * INTO #TempTable FROM MyTable
Select * From #TempTable
your query
SELECT * INTO #TempTable
FROM MyTable
WHERE ...
will create an empty table if the select returns no rows
How can I create two temporary tables with the same structure without write twice?
Something like that:
DECLARE #TEST_TABLE1, #TEST_TABLE2 TABLE
(
FIELD1 INT,
FIELD2 INT
)
and NO:
DECLARE #TEST_TABLE1 TABLE
(
FIELD1 INT,
FIELD2 INT
)
DECLARE #TEST_TABLE2 TABLE
(
FIELD1 INT,
FIELD2 INT
)
These are not "temp tables", a temp table is CREATE TABLE #TempTable(x int)
to make this work for true table tables, try:
CREATE TABLE #TempTable(x int)
insert into #TempTable values(5) --test data to show no data copied to new table
select * into #tempTable2 from #TempTable where 1=2
select * from #TempTable
select * from #TempTable2
These are table vaiables (#tableVariable) and you have to declare each variable, there is no way around it.
The only very non-standard way I can think this may work is to just write to the sys.tables directly, but you would still have to do two inserts, but you are doing the tables at the same time.
That may not be what you want, but short of using a stored procedure, and making one call from your app, and two on the database I can't think of any other solution.
Create the first temp table, then select into a second temp table:
-- Create first temp table
CREATE TABLE #TEST_TABLE1
(
FIELD1 int
,FIELD2 int
)
-- Select into second temp table
SELECT *
INTO #TEST_TABLE2
FROM #TEST_TABLE1
-- Vet existence of both temp tables
SELECT * FROM #TEST_TABLE1
SELECT * FROM #TEST_TABLE2