Conversion failed when converting from a character string to uniqueidentifier - Two GUIDs

问题

I don't understand why I can't insert this. I can't spot the problem. The error message is Conversion failed when converting from a character string to uniqueidentifier.

The GUIDs are the ones that I got when I did a select from some other tables.

insert into [db].[dbo].[table] (myid,friendid,time1,time2) values
 ( CONVERT(uniqueidentifier,'0C6A36BA-10E4-438F-BA86-0D5B68A2BB15'),
   CONVERT(uniqueidentifier,'DF215E10-8BD4-4401-B2DC-99BB03135F2E'),
'2014-01-05 02:04:41.953','2014-01-05 12:04:41.953')

I use SQL Server 2012

The columns are

id        uniqueidentifier,
myid      uniqueidentifier,
friendid  uniqueidentifier,
time1     datetime nullable,
time2     datetime nullable

回答1:

The problem was that the ID column wasn't getting any value. I saw on @Martin Smith SQL Fiddle that he declared the ID column with DEFAULT newid and I didn't..

回答2:

MSDN Documentation Here

To add a bit of context to M.Ali's Answer you can convert a string to a uniqueidentifier using the following code

   SELECT CONVERT(uniqueidentifier,'DF215E10-8BD4-4401-B2DC-99BB03135F2E')

If that doesn't work check to make sure you have entered a valid GUID

回答3:

DECLARE @t TABLE (ID UNIQUEIDENTIFIER DEFAULT NEWID(),myid UNIQUEIDENTIFIER
                , friendid UNIQUEIDENTIFIER, time1 Datetime, time2 Datetime)
insert into @t (myid,friendid,time1,time2) 
values
 ( CONVERT(uniqueidentifier,'0C6A36BA-10E4-438F-BA86-0D5B68A2BB15'),
   CONVERT(uniqueidentifier,'DF215E10-8BD4-4401-B2DC-99BB03135F2E'),
   '2014-01-05 02:04:41.953','2014-01-05 12:04:41.953')

SELECT * FROM @t

Result Set With out any errors

╔══════════════════════════════════════╦══════════════════════════════════════╦══════════════════════════════════════╦═════════════════════════╦═════════════════════════╗
║                  ID                  ║                 myid                 ║               friendid               ║          time1          ║          time2          ║
╠══════════════════════════════════════╬══════════════════════════════════════╬══════════════════════════════════════╬═════════════════════════╬═════════════════════════╣
║ CF628202-33F3-49CF-8828-CB2D93C69675 ║ 0C6A36BA-10E4-438F-BA86-0D5B68A2BB15 ║ DF215E10-8BD4-4401-B2DC-99BB03135F2E ║ 2014-01-05 02:04:41.953 ║ 2014-01-05 12:04:41.953 ║
╚══════════════════════════════════════╩══════════════════════════════════════╩══════════════════════════════════════╩═════════════════════════╩═════════════════════════╝

回答4:

You have to check unique identifier column and you have to give a diff value to that particular field if you give the same value it will not work. It enforces uniqueness of the key.

Here is the code:

Insert into production.product 
(Name,ProductNumber,MakeFlag,FinishedGoodsFlag,Color,SafetyStockLevel,ReorderPoint,StandardCost,ListPrice,Size
,SizeUnitMeasureCode,WeightUnitMeasureCode,Weight,DaysToManufacture,
    ProductLine, 
    Class, 
    Style ,
    ProductSubcategoryID 
    ,ProductModelID 
    ,SellStartDate 
,SellEndDate 
    ,DiscontinuedDate 
    ,rowguid
    ,ModifiedDate 
  )
  values ('LL lemon' ,'BC-1234',0,0,'blue',400,960,0.00,100.00,Null,Null,Null,null,1,null,null,null,null,null,'1998-06-01 00:00:00.000',null,null,'C4244F0C-ABCE-451B-A895-83C0E6D1F468','2004-03-11 10:01:36.827')

来源：https://stackoverflow.com/questions/20940350/conversion-failed-when-converting-from-a-character-string-to-uniqueidentifier

标签

sql-server

sql-server-2012