FlexiCoder Blog » query syntax

SQL Server 2008 – Table Valued Parameters

flexicoder — Wed, 16 Jun 2010 19:39:54 +0000

Here is a great article that explains how to use TVP’s via .Net and a stored procedure

SQL Grant Execute for Stored Procs

flexicoder — Thu, 29 Apr 2010 19:58:34 +0000

Found this great article that has a really simple script to create the grant commands needed for all the procs in a database

Passing xml to use as search criteria in a query (optional parameters)

flexicoder — Thu, 04 Jun 2009 08:21:00 +0000

We’ve had to generate a search facility for books on a site. The user types in any number of values and the results are ranked based on how many of the terms are actually found.

The example below has a hard coded XML data, but obviously this would be passed in as a parameter, and as you build this externally you can include as many terms as you need.


DECLARE @xml XML
SET @xml = '
              
              
              
              
            ';

/* Use a CTE to load the terms into a table for later joining */
With MatchingTerms  (Term)
AS ( Select node.value('./@text', 'varchar(2000)') AS Term
        FROM @xml.nodes(N'//term') T(node))

SELECT  b.id,
            b.coverTitle,
            b.ISBN13,
            shortName as [binding],
            'B' as [type],
            count(id) as score
FROM    Book b,
           MatchingTerms x
WHERE
     b.coverTitle like '%' + x.Term + '%'
OR
     b.ISBN13 = x.Term
GROUP BY
     b.id,  b.coverTitle,  b.ISBN13, shortName

Differences between SCOPE_IDENTITY and @@IDENTITY

flexicoder — Mon, 20 Apr 2009 08:45:00 +0000

@@IDENTITY will return the last id that was created using your connection, therefore if your insert kicks off a trigger you could get the wrong id.

But SCOPE_INDENTITY() will return the last identity created

Delete with Inner join

flexicoder — Fri, 06 Mar 2009 11:22:00 +0000

The following example shows how to perform a delete using an inner join

DELETE
    a
FROM
    StatementlineassociatedPayment AS a
INNER JOIN
    rebatePatientStatementLine AS b
ON
    a.StatementlineId = b.Id
INNER JOIN
    rebatePatientSummary AS c
ON
    b.summaryId = c.Id
WHERE
    c.IssueStatus <> 2

CTE – Common Table Expression

flexicoder — Tue, 03 Feb 2009 19:48:00 +0000

The following is an example of a CTE we have used

WITH ProcessedTasks (PatientID, LowestTaskId)
AS
(
SELECT DISTINCT
    RebatePatientSummary.PatientId,
    MIN(RebatePayment.TaskEventId) AS Expr1
FROM
    StatementLineAssociatedPayment
INNER JOIN
    RebatePayment
    ON StatementLineAssociatedPayment.RebatePaymentId = RebatePayment.Id
INNER JOIN
    RebatePatientStatementLine
    ON StatementLineAssociatedPayment.StatementLineId = RebatePatientStatementLine.Id
INNER JOIN
    RebatePatientSummary
    ON RebatePatientStatementLine.SummaryId = RebatePatientSummary.Id
INNER JOIN
    TaskEvent
    ON RebatePayment.TaskEventId = TaskEvent.Id
WHERE
    (RebatePatientSummary.IssueStatus = 2)
AND
    (RebatePayment.TaskEventId <> 0)
AND
    (TaskEvent.EventStatus = 5)
AND
    taskevent.rebateprocessed = 0
GROUP BY
    RebatePatientSummary.PatientId
)

SELECT
    t.Id,
    t.PatientId,
    t.RebateProcessed,
    p.lowestTaskId,
    t.SystemTaskId
FROM
    TaskEvent as t
INNER JOIN
    ProcessedTasks AS p
    ON t.PatientId = p.PatientId
AND
    t.Id <= p.LowestTaskId
WHERE
    EventStatus = 5
AND
    rebateprocessed = 0

TRUNCATE TABLE – execute permissions

flexicoder — Mon, 05 Jan 2009 15:01:00 +0000

In SQL 2005 you can now use WITH EXECUTE AS to allow a normal user to truncate tables. It basically means they run the specificed procedure with higher rights than they have.

CREATE PROCEDURE TruncateMyTable
WITH EXECUTE AS OWNER
AS TRUNCATE TABLE MyDB..MyTable;

See MSDN for more details.

T-SQL Update with Inner Join

flexicoder — Fri, 19 Dec 2008 14:18:00 +0000

Below is an example of an Update that has an Inner Join

UPDATE
    Taskevent
SET
    RebateProcessed = 1
FROM
    TaskEvent
INNER JOIN
    TaskEventAsset
    ON TaskEvent.Id = TaskEventAsset.Id
WHERE
    PatientId = @PatientID
AND
    JobDate < @PriorTo
AND
     ConcentratorId = @ConcentratorId

SQL Grant Execute

flexicoder — Wed, 17 Dec 2008 15:45:00 +0000

Found an article that had a nice SQL script to assign execute permissions to a user in SQL2000

Here is the script

DECLARE @sql nvarchar(4000)

DECLARE @db  sysname ;
SET @db = DB_NAME()

DECLARE @u   sysname ;
SET @u = QUOTENAME('')

SET @sql ='select ''grant exec on ''
        + QUOTENAME(ROUTINE_SCHEMA) + ''.''
        + QUOTENAME(ROUTINE_NAME) + '' TO ' + @u
        + ''' FROM INFORMATION_SCHEMA.ROUTINES ' +
        'WHERE OBJECTPROPERTY(OBJECT_ID(ROUTINE_NAME),''IsMSShipped'') = 0'

EXEC master.dbo.xp_execresultset @sql,@db