Hi all there,
I'm a newbee to this forum. I've a question, is there any limitation
on "IN" clause in select query.
for example :
"SELECT EMP_ID, EMP_NAME FROM EMPLOYEE WHERE EMP_ID IN
('EMP1001','EMP1002','EMP1003', etc, etc, so on)".
I've read at some documentation that there is a limitation for Columns
in a table and i.e. we can have only 1024 columns per table, is this
true?
Plz help me !!
Thanx in advance.
Kind Regards,
Harry
I'm new to SQL so don't laugh if this is easy to spot but I'm having trouble with a select statement but I do not think it's the syntax etc, I'm convinced it must be due to some restrictions and limitations within SQL.
Could anyone shed some light? I've been 'googling' for two days now and can't find anything, much appreciated! thanks.
SELECT a.medno_id,
tblAction.action_shortdesc,
tblClassification.class_shortdesc,
tblType.type_shortdesc,
tblUnit.unit_shortdesc,
tblSystem.system_shortdesc,
a.med_oldserial,
a.med_builddate,
tblLibrary.lib_shortdesc,
a.med_f24bookno,
a.med_f24entry,
a.med_f102bookno,
a.med_f102entry,
tblTransport.trans_shortdesc,
a.med_courierno,
tblPOC.poc_surname,
a.med_title,
a.med_notes
FROM tblMedia a
INNER JOIN tblAction ON a.action_id = tblAction.action_id
INNER JOIN tblClassification ON a.class_id = tblClassification.class_id
INNER JOIN tblType ON a.type_id = tblType.type_id
INNER JOIN tblUnit ON a.unit_id = tblUnit.unit_id
INNER JOIN tblSystem ON a.system_id = tblSystem.system_id
INNER JOIN tblLibrary ON a.lib_id = tblLibrary.lib_id
INNER JOIN tblTransport ON a.trans_id = tblTransport.trans_id
INNER JOIN tblPOC ON a.poc_id = tblPOC.poc_id
WHERE a.medno_id = 327
ORDER BY a.med_effdate
I've spaced out the query so it's easy to read
I've started the query from scratch building my SQL adding one field at a time and it works perfect until it reaches a certain number of fields, it's as if SQL has a limit to no of fields it can return/be used in the select part of the statement. Are there any limitations I should know about? or am I being an idiot and doing something I shouldn't?
Hope this makes sense, thanks!
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I am using OpenXML to put the XML records into SQL Server 2000. I want to know how big xml file can be inserted without significant problems in SQL Server 2000? Are there any limitations of OpenXML? I am using ntext as the holder for XML stream data.
Here is the stored procedure.
Code Block
CREATE PROCEDURE insertDInfo
(@OrderDoc ntext)
AS
DECLARE
@hDoc int
EXEC sp_xml_preparedocument
@hDoc output,
@OrderDoc
INSERT INTO [DInfo]
SELECT *
from OPENXML (@hDoc,'Data/Despatch',3)
with
(
[ID_Key] varchar(60) '@ID_Key',
DNumber varchar(50) '@DNumber',
PartNumber varchar (50) '@PartNumber',
Quantity real '@Quantity',
OrderNumber varchar (50) '@OrderNumber',
)
ORDER BY
DNumber
EXEC sp_xml_removedocument @hDoc
GO
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Just been reading up on this and there are a lot of limitation which one needs to consider when designing an in-memory table. I'm going to post them below in the hope that others will add to them so I can get a definitive list;
No foreign key constraints
No clustered indexes
No schema changes once the table is set in memory
No index changes once the table is set in memory
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XML/User Defined data types are not supported
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