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SQL : Error converting data type varchar to numeric


SQL : Error converting data type varchar to numeric

By : Z Liu
Date : October 18 2020, 11:12 AM
will help you I have met a very strange problem. There are two sql queries: , i would try doing something like this instead:
code :


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Error converting data type varchar to numeric when casting varchar(max) to decimal

Error converting data type varchar to numeric when casting varchar(max) to decimal


By : user6160534
Date : March 29 2020, 07:55 AM
This might help you I'm trying to sum values from two strings. In order to do that I'm casting the strings in to decimals, add them up and then cast it back to string for the output. Also using max to avoid duplication entries. I have the following line in my SP: , The part that is failing is the inner case:
code :
CASE WHEN QuestionID = 261
     THEN CAST(Answer AS decimal)
     ELSE '' END
Cast( Max(CASE WHEN QuestionID IN (261,260) AND ISNUMERIC(ANSWER) = 1
               THEN CAST(Answer AS decimal)
               ELSE 0 END)
   AS varchar) as Total
Decimal Data in Varchar datatype - Arithmetic overflow error converting varchar to data type numeric

Decimal Data in Varchar datatype - Arithmetic overflow error converting varchar to data type numeric


By : Osama Elayyan
Date : March 29 2020, 07:55 AM
will be helpful for those in need , Try any of the below:
code :
select 
T1.Col1,
CASE T1.Col1
   WHEN '99.95' THEN '18.97'
END 
from Table T1
select 
T1.Col1,
CASE TO_NUMBER(T1.Col1, '99.99') 
   WHEN 99.95 THEN '18.97'
END 
from Table T1
Error converting data type varchar to numeric and varchar to datetime

Error converting data type varchar to numeric and varchar to datetime


By : TheTurkHustler
Date : March 29 2020, 07:55 AM
around this issue Error converting data type varchar to numeric , If you want to exclude the row entirely, then you can do:
code :
WHERE ISDATE(someColumn)=1
INSERT INTO someTable (datecolumn)
SELECT CASE WHEN ISDATE(someColumn)=1 THEN CONVERT(DATETIME,someColumn) ELSE NULL END
FROM someOtherTable
Error converting data type varchar to numeric. When try to compare numeric

Error converting data type varchar to numeric. When try to compare numeric


By : BOBO
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further I believe the error you are getting is being caused by that your CASE expressions in the WHERE clause have branches with different types, namely text and numeric. To fix this, you need to make all branches be the same type. Making everything numeric won't work because of the text, but we can make everything text instead.
For the case of numeric data, you don't even have the same type of data there either. To get around this, you can cast the numeric data to a common decimal format before converting back again to text:
code :
WHERE
    CASE WHEN ISNUMERIC(A.VALUE) = 1
         THEN CONVERT(VARCHAR, CAST(A.VALUE AS DECIMAL(10,2)))
         ELSE A.VALUE END =
    CASE WHEN ISNUMERIC(B.VALUE) = 1
         THEN CONVERT(VARCHAR, CAST(B.VALUE AS DECIMAL(10,2)))
         ELSE B.VALUE END
varchar to numeric:Error converting data type varchar to numeric

varchar to numeric:Error converting data type varchar to numeric


By : Christopher Smith
Date : March 29 2020, 07:55 AM
like below fixes the issue When some of the rows have incorrect values, ALTER COLUMN would not work. A typical course of action goes like this:
Add a new column of the desired type Update the column with values that you would like to keep Drop the old column Rename the new column
code :
UPDATE MyTable
SET NewColumn =
    CASE WHEN ISNUMERIC(OldColumn)=1 AND DATALENGTH(OldColumn) <= 19 THEN
        CAST(OldColumn AS decimal(19,12))
    ELSE
        NULL
    END
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