SQL Server Admin 2014 :: Estimated Query Plan For A Stored Procedure With Multiple Query Statements
Oct 30, 2015
When viewing an estimated query plan for a stored procedure with multiple query statements, two things stand out to me and I wanted to get confirmation if I'm correct.
1. Under <ParameterList><ColumnReference... does the xml attribute "ParameterCompiledValue" represent the value used when the query plan was generated?
<ParameterList>
<ColumnReference Column="@Measure" ParameterCompiledValue="'all'" />
</ParameterList>
</QueryPlan>
</StmtSimple>
2. Does each query statement that makes up the execution plan for the stored procedure have it's own execution plan? And meaning the stored procedure is made up of multiple query plans that could have been generated at a different time to another part of that stored procedure?
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Mar 13, 2014
I can easily query multiple servers using the multi-server query function in Central Management Server and write some of the results to logging tables. I would like to be able to do this via a scheduled job. So far I am finding that even setting up Master/Target Servers this may not work and the only workaround is either using SSIS, SQLCMD (by basically hard coding the servername) and possibly Powershell.
tell me if they have been successful just using standard jobs and querying against multiple servers?
If I can't save the results to a 'central' database/table (I can do this when in SSMS), but can still query against multiple servers I was thinking I could write the results to a CSV file that a SSIS job picks up.
I have attempted using SSIS to iterate through servers and have been plagued with intermittent connection issues when using a For...Loop container.
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Sep 14, 2007
Hi,
I am writing a client application that shows estimated queries plans and statistics. I know how to obtain estimated plans by using SQL Server Management Studio. But is it possible to obtain by using database functions?
I have found sys.dm_exec_query_plan, but it seems that this function can only be used for executed (or executing) queries...
Thanks
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Sep 17, 2015
The plan cache is cleared automatically (every 30-60 seconds) on our high load OLPT server.
Can't find a reason for it. I have been logging procedure cache thru dm_exec_cached_plans, every second for a couple of minutes.
It shows that it doesn't grow beyond 200Mb. SQLserver has 64Gb available.
DBCC FREEPROCCACHE is not executed.
dm_os_memory_clerks shows the same 200Mb max (approximately).
I disabled the SQL Agent, still happens, so it's not a job causing the problem.
I disabled the Resource Governor, still the same problem.
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Jul 20, 2005
Hi,I have a question about estimated query execution plans that aregenerated in QA of MSSQL.If I point at an icon/physical operator in the estimated QEP, it showsmesome statistics about the operator.Is there a way to retrieve these statistics through a query, i.e., canthese statistics be available to the user?Also, is there a way to generate these statistics on my own?thanks in advance-TC.
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Jun 17, 2015
Is it possible to check query execution plan of a store procedure from create script (before creating it)?
Basically the developers want to know how a newly developed procedure will perform in production environment. Now, I don't want to create it in production for just checking the execution plan. However they've provided SQL script for the procedure. Now wondering is there any way to look at the execution plan for this procedure from the script provided?
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Sep 23, 2015
I was trying to create stored proc
[code="create procedure dbo.sp_table1
@idint
as
begin
updatetable1
setisarchived = 1,
[Code] ....
But the query was continuously blocking the query below
updatetable1
setisarchived = 1,
modtime = getdate()
whereid = @id
andisarchived = 0
I was not sure, why the create procedure statement is blocking the update statement.
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Jul 23, 2014
I have created a stored procedure with dynamic query and using sp_executesql . stored procedure is work fine.
Now i want to call stored procedure in select statement because stored procedure return a single value.
I search on google and i find openrowset but this generate a meta data error
So how i can resolve it ???
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Mar 13, 2008
I have a stored procedure that I want to test for performance , however, I cannot view the estimated query plan execution. I am not using any nested subqueries. Any ideas why the plan will not generate?
Thanks in advance!
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Mar 29, 2015
I've been using partitioned views in the past and used the check constraint in the source tables to make sure the only the table with the condition in the where clause on the view was used. In SQL Server 2012 this was working just fine (I had to do some tricks to suppress parameter sniffing, but it was working correct after doing that). Now I've been installing SQL Server 2014 Developer and used exactly the same logic and in the actual query plan it is still using the other tables. I've tried the following things to avoid this:
- OPTION (RECOMPILE)
- Using dynamic SQL to pass the parameter value as a static string to avoid sniffing.
To explain wat I'm doing is this:
1. I have 3 servers with the same source tables, the only difference in the tables is one column with the server name.
2. I've created a CHECK CONSTRAINT on the server name column on each server.
3. On one of the three server (in my case server 3) I've setup linked server connections to Server 1 and 2.
4. On Server 3 I've created a partioned view that is build up like this:
SELECT * FROM [server1].[database].[dbo].[table]
UNION ALL SELECT * FROM [server2].[database].[dbo].[table]
UNION ALL SELECT * FROM [server3].[database].[dbo].[table]5. To query the partioned view I use a query like this:
SELECT *
FROM [database].[dbo].[partioned_view_name]
WHERE [server_name] = 'Server2'
Now when I look at the execution plan on the 2014 environment it is still using all the servers instead of just Server2 like it should be. The strange thing is that SQL 2008 and 2012 are working just fine but 2014 seems not to use the correct plan.
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Apr 27, 2014
I would like to know if there is any option to Restrict DML statements in SSMS for a user where the same user should be able to perform these actions through application on particular database.
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Feb 6, 2014
Query to get CU# of sql server Instance ?
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Oct 25, 2006
This post is related to SQL server 2000 and SQL Server 2005 alleditions.Many of my stored procedures create temporary tables in the code. Iwant to find a way to find the query plan for these procsRepro--***********************************use pubsgoCREATE PROCEDURE Test @percentage intASSET Nocount on--Create and load a temporary tableselect * into #Temp1 from titleauthor--Create second temporary tablecreate table #Temp2 ( au_id varchar(20), title_id varchar (20), au_ordint, rolaylityper int)--load the second temporary table from the first oneinsert into #Temp2 select * from #Temp1goset showplan_Text ONgoEXEC Test @percentage = 100GOset showplan_Text OFFgo**************************************I get the following errorServer: Msg 208, Level 16, State 1, Procedure Test, Line 10Invalid object name '#Temp2'.Server: Msg 208, Level 16, State 1, Procedure Test, Line 10Invalid object name '#Temp1'.I do understand what the error message means. I just want to know abetter way of finding the query plan when using temp objects.My real production procs are hundreds of lines with many temp tablesused in join with other temp tables and/or real tables.Regards
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Feb 7, 2015
I have this command :
Exec 'update .... insert ..... delete ..... insert ...'
I Execute these command in one execution.
exec ('...')
Are these commands act as a transaction? If one of them create error , another commands run or rull backed?
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Jul 27, 2015
Is there any single TSQL query which provides below info.When did my AlwaysOn Availability group failed over and from which node it failed to which new node(i.e. replica)?
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Sep 21, 2015
I want print state of running query to output, because my query need long time to run. But print statement dos not work correctly!!
Note: I cannot use "go" in my query!
/* My Query */
print 'Fetch Data From Table1 is Running...'
insert into @T1
select x,y,z
from Table1
print 'Fetch Data From Table1 Done.'
[Code] .....
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Oct 29, 2015
This store procedure will get some executable queries from the select statement, the cursor will fetch each rows to execute the query and insert the queries into table_3 to mark as 'E'. Until 17:00, this store procedure will stop execute the queries and just get the queries from select statement insert into table_3 to mark as 'C'.
I don't know why the outputs in table_3 are quiet different than I think. This store procedure comes out with two exactly same queries and one marked as C and another marked as E.
CREATE PROCEDURE procedure1
AS
DECLARE cursor_1 CURSOR FOR
SELECT
'This is a executable query'
FROM table_1
DECLARE @table_2
DECLARE @stoptime DATETIME = NULL;
[Code] ....
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Feb 12, 2014
I would like to find Query to retrieve User DataBase Startup Time from SQL server that we see in the Sql Server Log.
I was able to find the Server Startup Time but not the individual Databases .
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Mar 18, 2015
How to convert float to timestamp in single select query
E.g., i have float as 1.251152515236 ,
I want to convert this to datetime and from datetime to timestamp... i.e. 26:11:00
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Oct 1, 2015
I just ran into an issue with cascading locks due to a SPID on one of my production servers. When researching the lock, I noticed that there was no sql text. SP_Who 2, nor the following query captured anything,
SELECT sqltext.TEXT
, sqlplan.query_plan
, req.session_id
, req.status
, req.command
[Code] ....
I spoke to the user causing the lock and he ran into a visual basic error when this occurred and didn't close out that window. So my guess is that it's due to an uncommitted transaction. However, shouldn't I still see something if that was the case?
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Oct 6, 2015
SQL Server 2012 Performance Dashboard Main advices me this:
Since the application is from a vendor and I have no control over its code, how can improve this sitation?
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Jul 9, 2015
I was trying to configure maintenance plan to take nightly full database backup and Log backup. I was trying to configure it like in attached file. Any links that i can follow and configure as in attached file.
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Apr 29, 2008
I believe we can you multiple statements in stored procedures?
Suppose I have a stored procedure and I pass parameters to this SP.
What I am aiming for is to pass some values to the stored procedure, use a select statement to retrieve some values, then have two update statements as below. Updating the same table but with opposite values, both passed as a parameter and retrived, as given below:
CREATE sp_temp_proc
@order_id int,
@order_position int,
@temp_order_id OUTPUT
@temp_order_position OUTPUT,
SELECT order_id AS temp_order_id
FROM <TABLE> WHERE order_position < @order_position
@temp_order_id = temp_order_id
UPDATE <TABLE> SET order_position = @order_position WHERE order_id =
@temp_order_id
UPDATE <TABLE> SET order_position = @temp_order_position WHERE order_id = @order_id
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Jul 23, 2005
Hi!I got 2 stored procedure, proc1 executes proc2,proc2 does some updates and inserts on different tables ...proc1:ALTER PROCEDUREASexecute proc2SELECT * FROM tblFoo______________________my problem is, that when executing proc1, I receive the message:"THE SP executed successfully, but did not return records!"But I need the resultset from "SELECT * FROM tblFoo" that is executedat the end of proc1.I'm not sure, but I think that I solved a similira problem with "setnocount on", I put it into both SP, but it's still the same ... noresultset ...How can I display "SELECT * FROM tblFoo" within a SP, where SQLstatements are executed before?!Thank you!
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Jan 31, 2008
I have a SP that has the correct syntax. However when I run my web-app it gives me this error: "Only one expression can be specified in the select list when the subquery is not introduced with EXISTS. "
The procedure takes in three parameters and retrieves 23 values from the DB to display on my form.
Any ideas?
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Aug 9, 2007
Hi all,
I have 2 select statements in my Stored Proc.
I want to display the results of each query in my DataGridView.
However, only the data of the last select query is returned.
Why is this?
Thanks.
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May 27, 2014
I have a query with huge number of case statements. Basically I need to short this query with getting rid of these hundreds of CASE statements.
Because of the nature of the application I am not allowed to use a function, and just wondering if there is a possible way to rewrite this with COALESCE().
SELECT
CASE WHEN A.[COL_1] LIKE '%cricket%' THEN 'ck' + ',' ELSE '' END +
CASE WHEN A.[COL_1] LIKE '%soccer%' THEN 'sc' + ',' ELSE '' END +
....
CASE WHEN A.[RESIUTIL_DESC] LIKE '%base%ball' THEN 'BB' + ',' ELSE '' END
FROM TableName A
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May 24, 2007
I have created a stored procedure with multiple select statements using MSSQL 2000. When I connect to this using a SQLDataSource it only seems to get the first SELECT. I need to access the multiple tables returned by the stoped procedure. Can anyone point me in the dirrection of how to do this.ThanksClearz
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Feb 21, 2013
I think not. Microsoft says it is possible: one for parallel and one for serial execution. Don't believe that's possible for a stored procedure to change execution plans on the fly. Have an on-going problem with timeout occurring with an application and narrowed the culprit to a stored procedure. I couldn't find any obvious issues database wise, no locks, etc. so I recompiled (altered) the sproc without making any changes and the issue cleared for a couple days.
It happened again to day, and so I recompiled (altered) the sproc and it went away again. No code changes to both application (so they say) and stored procedure. I ran the below code snippet to check for sprocs with multiple cached plans and the offending one came up on a short list. So, my question is, Is it one sproc per query plan or can there be more than one. I understand the connection issues.
Code:
SELECT db_name(st.dbid) DBName,
object_schema_name(st.objectid, dbid) SchemaName,
object_name(st.objectid, dbid) StoredProcedure,
MAX(cp.usecounts) Execution_count,
st.text [Plan_Text]
INTO #TMP
[Code] .....
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Aug 10, 2014
Is it possible to assign multiple columns from a SQL query to one variable. In the below query I have different variable (email, fname, month_last_taken) from same query being assigned to different columns, can i pass all columns to one variable only and then extract that column out of that variable later? This way I just need to write the query once in the complete block.
DECLARE @email varchar(500)
,@intFlag INT
,@INTFLAGMAX int
,@TABLE_NAME VARCHAR(100)
[code].....
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Dec 3, 2006
Hey Guys. I’m having a little trouble and was wondering if you could help me out. I’m trying to create a custom paging control, so I create a stored procedure that returns the appropriate records as well as the total amount of records. And that works fine. What I’m having problems with is reading the data from the second select statement within the code. Anyone have any idea on how to do this? Also.. how can I check how many tables were returned?
Here's my code. I'm trying to keep it very generic so I can send it any sql statement:public DataTable connect(string sql)
{
DataTable dt = new DataTable();
SqlConnection SqlCon = new System.Data.SqlClient.SqlConnection(ConfigurationManager.ConnectionStrings["MyDB"].ToString());
SqlDataAdapter SqlCmd = new SqlDataAdapter(sql, SqlCon);
System.Data.DataSet ds = new System.Data.DataSet();
SqlCmd.Fill(ds);
dt = ds.Tables[0];
//Here's where I don't know how to access the second select statement
return dt;
} Here's my stored procedure:
ALTER PROCEDURE dbo.MyStoredProcedure
(
@Page int,
@AmountPerPage int,
@TotalRecords int output
)
AS
WITH MyTable AS
(
Select *, ROW_NUMBER() OVER(ORDER BY ID Desc) as RowNum
From Table
where Deleted <> 1
)
select * from MyTable
WHERE RowNum > (((@Page-1)*@AmountPerPage)) and RowNum < ((@Page*@AmountPerPage)+1);
Select @TotalRecords = COUNT(*)
from Table
where Deleted <> 1
RETURN
Thanks
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Apr 12, 2015
I'm looking at installing 2008R2 and 2014 side by side, then using Mirroring to provide HA for the 2008R2 instance and AoHA for the 2014 instance. I'd be using the same two physical servers for both the Mirroring pair and the AoHA pair.
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May 15, 2015
We have multiple databases on a single instance in an OLTP environment. I have my data files on a separate SAN LUN from my transaction log files (and a few NDFs split out onto additional LUNs). I was wondering if there is a performance benefit to putting each LDF file on its own LUN? Or at least my few busiest LDFs?
We are currently on 2012, but I'm having to put together specs for a 2014 installation and need to answer this question without having an environment in which I can benchmark different setups. I just want to hear whether or not others have done this (why or why not?).
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