Transact-SQL (t-sql) is a dialect of SQL used by Micrsoft's [SQL Server](http://www.microsoft.com/sqlserver/en/us/default.aspx) and SAP's [Sybase](http://www.sybase.com/).
3
votes
2answers
559 views
Linked Server Query Results: OPENQUERY vs Distributed Transactions
I have two databases. They are on different servers. One is named REPORTDB and the other is named TRANSDB. TRANSDB is referenced as a linked server on REPORTDB named TRANS.
I execute a query like ...
3
votes
1answer
45 views
Is it “legal” TSQL to CREATE TABLE #SomeTable and then DROP TABLE #SomeTable repeatedly in a script?
Is it "legal" TSQL to CREATE TABLE #SomeTable and then DROP TABLE #SomeTable repeatedly in a script?
I've got my code sort of segregated as "coherent blocks" that I can insert into a longer ...
1
vote
1answer
44 views
How can we get table name from inside trigger?
I need to pass the table name from trigger to procedure.
ALTER TRIGGER [dbo].[Trg_ProjectCreation]
ON [dbo].[Projects]
AFTER INSERT
AS
BEGIN
SET NOCOUNT ON;
-- procedure call
...
0
votes
1answer
46 views
Disabled trigger still fired
I've just run the following t-sql to disable a trigger (with a deploy script wrapper around osql):
disable trigger dbo.trExampleTableInsert ON dbo.ExampleTable
In SSMS I could see the trigger was ...
1
vote
1answer
157 views
how to add attachment(text file) to database mail?
I have scenario
Daily i run a sql job to apply a new updates to one table - this job will create one text file daily - text file contains all new updates
I can send a mail to client that job is ...
0
votes
0answers
75 views
DELETE failed because the following SET options have incorrect settings: 'ANSI_NULLS'
I have inherited a few scripts that are pumped through a c#.NET custom app to update a SQL2005 SP3 database. One of these scripts does a deletion on a user table called msw_timer_task, based on a ...
2
votes
2answers
81 views
Cannot rebuild index, but there's no reason why not?
I've created a process whereby I am able to only rebuild indexes that need rebuilding(the process takes an hour and a half if I rebuild them all), and while it works beautifully, it gets stuck on one ...
0
votes
0answers
92 views
How to create table set from several XSD in SQL Server 2012 or with VS 2012
Is there any solution in T-SQL or in C# how to create XML schema collection in T-SQL or C#?
Problem is I cannot use:
USE Database_test
GO
CREATE XML SCHEMA COLLECTION Collection_from_XSD AS
N'
...
1
vote
1answer
51 views
Can I use Try_Cast to give me a query result column with different datatypes?
I have a column that is varchar(max). It contains mostly valid XML. But sometimes it has invalid xml (that I still need).
I am trying to make a view for this table that allows the value to display ...
6
votes
1answer
282 views
Restore a Database to a New database (T-SQL)
I have a database backup from a database, say SourceData which needs to be restored on another database, same schema, but different name (SourceData_1) using T-SQL. I don't know why I gets the ...
0
votes
3answers
65 views
DB comparer field by field for all tables
I have a liveDB and I have a development DB. Now when I make a change to development DB, I want to find out the changes later when I am deploying my application on server. For eg. I may have added ...
1
vote
1answer
117 views
error in Execute SQL Task with parameter
I have an Execute SQL Task object in the Error handlers section of a SSIS package. What it does is inserting a record to a table using OLE DB connection. There is a value in the insert statement that ...
0
votes
3answers
135 views
Easier way to handle so many isnull() situation
Is there any good way to avoid writing so many times isnull() function inside sproc ?
I have stored procedure that use almost 30 times isnull() function, I think that I am miss a concept , but until I ...
1
vote
1answer
56 views
limit the number of rows returned when a condition is met?
Is it possible to limit the number of rows returned when a condition is met?
I am working on a query to check if a student is ready to graduate, and they need to meet a certain number of credits per ...
1
vote
1answer
66 views
sp_startpublication_snapshot Parameter(s)
I am creating a stored procedure that:
Restores a DB from a .bak giving the .mdf and .ldf a new name (so we have have several copies of the same DB up
(If specified in the SP's parameter) Creates ...
2
votes
2answers
79 views
Executing a table type parameter stored procedure or function within a select clause
Just a quick question. I have a stored procedure that takes two parameters, a varchar (table name) and a tabletype (range of primary key ID values), and uses them to return all FK connections to and ...
3
votes
3answers
94 views
Conditional WHERE Clause in a Table Valued Function
I have a table valued function
CREATE FUNCTION [dbo].[DateRange]
(
@StartDate date,
@EndDate date,
@Location varchar(25),
@Device varchar(25)
)
...
2
votes
0answers
46 views
update statement with self join
I needed to copy information from one row of a table to another.
I noticed I could do the following:
update address
set col1 = a2.col1,
col2 = a2.col2,
.....etc
from address a1, address a2
where ...
0
votes
1answer
36 views
Conditional Where Statement Involving a NULL value?
Trying to find a way to pass off a third value within a 'bit' field. I would like to be able to utilize NULL as a searchable value. As in 'True', 'False', or 'NULL', the only issue is I'm unsure how ...
6
votes
2answers
131 views
How to flatten results of a table with two related “many” tables?
I've reorganized some tables in my database to be more flexible but I'm not really sure how to write the SQL to extract meaningful data from them.
I have the following tables (somewhat abbreviated ...
3
votes
3answers
2k views
Add a new Column and define its position in a table
I have Table A with 5 columns:
TableA
--
Name
Tel
Email
Address
I want to add a new column (mobile) in between Tel & Email:
TableA
--
Name
Tel
Mobile
Email
Address
If I use
ALTER TABLE ...
-2
votes
1answer
65 views
how cursor implementations are different for each cursor type in sql server
In Oracle, there are only 2 types of cursor i.e. Implicit and Explicit cursor. Which is easy to understand. But, in SQL Server there are 4 Cursor AFAIK i.e. Static,Dynamic,Forward Only and Scroll. ...
1
vote
3answers
83 views
How to handle update or insert situations
From time to time my stored procedures looks like
create procedure handle_data
@fk int
,@value varchar(10)
as
begin
if exists (select * from my_table ...
1
vote
1answer
51 views
how to show only changed rows
if want querying the following table :
EventDateTime (DateTime), Host (guid), Flag ( bit)
2013-04-01 05:00, {id-x}, 0
2013-04-01 05:01, {id-x}, 0
2013-04-01 05:02, {id-x}, 0
2013-04-01 05:03, {id-x}, ...
0
votes
1answer
70 views
Why is there such a huge performance difference in these two join statements?
I have a query which i first wrote as (query has been simplified a bit) :
select ROW_NUMBER() OVER (ORDER BY c.CategoryTypeID), c.name, count(p.id) from category c
inner join product p on p.indID = ...
0
votes
0answers
46 views
T-SQL Script for segmenting data into finer categories based on percentage measure in another table
I have a SQL Server 2008 R2 database with two tables. The first table - Shops - has a list of establishments and the number of shoppers it attracts segmented by criteria A (2 categories) and B (2 ...
0
votes
5answers
276 views
The DELETE statement conflicted with the REFERENCE constraint
I'm trying to delete all users but getting the error:
Msg 547, Level 16, State 0, Line 1
The DELETE statement conflicted with the REFERENCE constraint "FK_M02ArticlePersons_M06Persons". The conflict ...
0
votes
1answer
37 views
Need help in converting this cursor to a set based operation
I have a stored procedure which runs as part of a report database refresh nightly which takes about 2 hours complete. The object B_RPT_RC_AUDIT_ASSIGNED_TO_TEMP_T2 has 8 million rows. Can you suggest ...
5
votes
1answer
105 views
Unexpected Table Scan with Parameterized LIKE
I'm experiencing an unexpected table scan on SQL Server 2005 against a heap table when parameterizing a LIKE statement... but when the same value as the variable is hard-coded, the expected Index Seek ...
0
votes
1answer
72 views
Oracle equiv of T-SQL UNION ALL query
In T-SQL I can accumulate the results of two unioned queries using the following syntax:
SELECT Q.a, SUM(Q.b)
FROM (
SELECT f1 as a, f2 as b FROM TBL1
UNION ALL
SELECT f1 as a, f2 as b FROM TBL2
)
...
-8
votes
2answers
131 views
How can I check for SQL Server performance problems using T-SQL? [closed]
I know how to use the Profiler, Performance Monitor, and Activity Monitor. I want to find a way to troubleshoot performance using T-SQL. How can I check for Microsoft SQL Server performance problems ...
2
votes
3answers
84 views
Programmatically find indexes that cannot be rebuilt online
I am automating rebuild and reorganise indexes using T-SQL. I run into problems with indexes that cannot be rebuilt online. Primarily this happens because ntext/nvarchar columns are included.
Is ...
2
votes
1answer
106 views
Execute sp_WhoIsActive as a query
I am at a client where they don't allow Adam Machanic's sp_WhoIsActive stored procedure to be installed anywhere on the SQL server. Does anyone have any suggestions for running it as a query instead?
1
vote
1answer
121 views
Backup stored procedure for full, differential and log backup
I wrote a simple stored procedure for backing up FULL, Differential and LOG backup. This is my stored procedure:
Alter PROCEDURE BackupDB
(
@BaseLocation varchar(1024),
@BackupType ...
5
votes
2answers
228 views
T-SQL Purpose of MAX in this Group By Query
I have run into some pre-existing SQL that I'm having a hard time uderstanding.
SELECT
MAX(I.Symbol) Symbol
, MAX(I.Ticker) CUSIP
, MAX(I.Name) Name
, SUM(H.Quantity) TotalQuantity
, ...
0
votes
0answers
46 views
trap xp_logininfo stored procedure error
Sql server 2000, windows 2003 server.
I am trying find all the invalid domain login creates in sql 2000 server in a script using xp_logininfo and get message "Could not obtain information about ...
3
votes
2answers
80 views
Update strings for all cmdexec Jobs
Does anyone know if it's possible, (and furthermore advisable) to update all cmdexec strings in jobs on a server?
We'd like to change our logging location, and in principle I'd think this could be ...
116
votes
3answers
18k views
What's the difference between a temp table and table variable in SQL Server?
This seems to be an area with quite a few myths and conflicting views.
So what is the difference between a table variable and a local temporary table in SQL Server?
8
votes
3answers
163 views
Unique Identifier with Extra Characters Still Matching in Select
We are using SQL Server 2012 with a unique identifier and we've noticed that when doing selects with additional characters added onto the end (so not 36 chars) it still returns a match to a UUID.
For ...
0
votes
1answer
32 views
Copy Permission From Windows Based user To Local user
I want to know if it is possible to copy the permissions of a windows user to a locally created user on SQL server?
0
votes
2answers
67 views
Need a way to query a table, and JOIN it with the TOP 1 related record from an other table
As a follow up to this question, I'm wondering if there is a better and/or more efficient way to gather the data in question.
As stated, this query does return me 95% of the data I need --
SELECT ...
2
votes
2answers
125 views
Help with tricky update statement
I've tried writting this update statement every possible way I can think of but I either wind up producing invalid results or run into a syntax barrier.
I have two table variables:
DECLARE
...
2
votes
2answers
77 views
Why do I need to use a sub query to filter down a grouped select?
If I do this --
SELECT dv.Name
,MAX(hb.[DateEntered]) as DE
FROM
[Devices] as dv
INNER JOIN
[Heartbeats] as hb ON hb.DeviceID = dv.ID
WHERE DE < '2013-03-04'
GROUP BY dv.Name
...
2
votes
1answer
675 views
How to remove xmlns from child elements with FOR XML
I have a TSQL query that I use to generate a SOAP document. I am using two namespaces. Namely:
- http://schemas.xmlsoap.org/soap/envelope/ for "packaging" the soap document
- A custom one that ...
2
votes
2answers
178 views
difference between UPDLOCK and FOR UPDATE
given the following code:
Set conn = CreateObject("ADODB.Connection")
Set RS = CreateObject("ADODB.Recordset")
conn.BeginTrans
...
//This is the line it is about
RS.Open "SELECT a,b FROM c FOR ...
0
votes
2answers
141 views
Is there a sortable ('order by') alternative to CURRENT_TIMESTAMP
I'm in the process of looking for a way to find a sortable alternative to a column that is populated with CURRENT_TIMESTAMP and I'm stumped at the moment.
I have a web based form with multiple ...
2
votes
1answer
327 views
Rules in SQL Server 2005
The syntax for rules in SQL Server 2005 is given:
CREATE RULE [ schema_name . ] rule_name
AS condition_expression
Whenever using rule, for example:
CREATE RULE list_rule
AS
@list IN ('1389', ...
6
votes
2answers
262 views
Is there any difference between putting a column alias at the start or the end of the column definition?
I've always seen and written my column aliases as
SELECT 1 as ColumnName
but today came across a query that used
SELECT ColumnName = 1
Is there any difference in how these two queries get ...
3
votes
2answers
220 views
Subquery in the VALUES clause
Here's a real-world schema:
CREATE TABLE [dbo].[Setting]
(
[ID] [BIGINT] NOT NULL,
[Module] [NVARCHAR](400) NOT NULL,
[Property] [NVARCHAR](400) NOT NULL,
[Value] ...
3
votes
3answers
272 views
Choosing the right algorithm in HashBytes function
We need to create hash value of nvarchar data for comparison purposes.
There are multiple hash algorithms available in T-SQL, but which one the best to choose from in this scenario? We want to ensure ...
