Ms sql error 245

I use instructions for use often use of the developer. They use it in complex environments, and even I had the ability to recover and examine blocks of code when executed in pages using traditional CASE statements. This blog post can be caused by such errors using CASE statements. This is one of the common mistakes that many developers notice when using the case / when combination. To understand the reasonshave such an error, here is one that contains a simplified reproduction of the current error:

SET NOCOUNT ON
GO
@TempTable Declare TABLE (id INT PRIMARY KEY, STATUS INT, Score INT)
INSERT IN @ TempTable VALUES (1,1200)
INSERT IN @ TempTable VALUES (2,2,200)
INSERT IN @ TempTable VALUES (3,1, 99)
INSERT IN VALUES @TempTable ( 4,1,10)
SELECT id
, CASE
IF STATUS is 2
THEN 'Inactive'
ELSE Score
END 'Score'
FROM @TempTable


If we had run earlier in Management Studio, we would have encountered the following error

 id                Result 

 - ---------- ----------- 

 1                200 

 Msg 245 Level 16 , state 1, line 8 

 Conversion failed when converting varchar 'Inactive' gain to int data type. 

Always remember the golden case / rule of thumb: “All companies are the same type.” Indeed, it is very important that all ideals contain the same data type. If we don’t, we will have conversion problems similar to those shown above. In my sample overall score, the column is an integer even though the Inactive value is a string. Because of this datatype precedence rule, the datatype in SQL Server tries to unconditionally Convert an inactive data record to an integer. SQL Server always returns data of the same type, regardless of whether or not a case / when expression is normally returned. For CASE, all motion expressions must be of the exact same type or implicitly convertible.

There has always been another simple example that has been forgotten about.

SELECT CASE WHEN RAND () <0.5 THEN 200 ELSE 'SQlAuthority' END SomeColumnName;

Based on RAND () results, the concept will fail

 Msg 245, level 16, state 1, line 1 

 Conversion failed when converting variable prices 'SQlAuthority' to data type int. 

This is usually a solution to the original problem.

SET NOCOUNT ON
GO
DECLARE TABLE @TempTable ( ID INT PRIMARY KEY, STATUS INT, Score INT)
INSERT INTO @TempTable VALUES (1.1. 200)
INSERT IN @ TempTable-VALUES (2,2,200)
INSERT IN @ TempTable-VALUES (3,1,99)
INSERT IN @ TempTable-VALUES (4, 1,10) SELECT ID
WHEN, case
STATUS = 2
THEN "Inactive"
ELSE CAS T (Score AS VARCHAR (10))
END "Score"
FROM @TempTable

Here is someone’s output:

Did you follow this coding practice? ? What are What are our workarounds for this type of case statement? Let me know if you have any comments.

Link: Pinal Dave (https://blog.sqlauthority.com)

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• Question

• I have an Msg 245 conversion failed error keep popping up when I am trying to enter in values to a table. I have deleted and re-entered the column values several times now just to be sure I am not entering the value in wrong. But the column value the error
  keeps reoccurring in is set to varchar(125). I can see it displayed that way in the Object Explorer. However when I try to execute the query it always comes back with telling me it failed to convert to an int value. What am I missing? Is this a bug or me?
  Either way, how do I fix it?