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how to convert varchar to numeric or double in sql query


how to convert varchar to numeric or double in sql query

By : user2949146
Date : November 16 2020, 06:23 AM
seems to work fine Database connector error: ADO Error code: 0x80004005 , Use this:
code :
ROUND(CONVERT(DECIMAL(18,2),'You Value here'),2)


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Convert Numeric value to Varchar

Convert Numeric value to Varchar


By : user2843588
Date : March 29 2020, 07:55 AM
Does that help i m trying to fetch the record using append some alphabt in my numeric column. but i m getting error, i tried with cast and convert function. , i think it should be
code :
select convert(varchar(10),StandardCost) +'S' from DimProduct where ProductKey = 212
select cast(StandardCost as varchar(10)) + 'S' from DimProduct where ProductKey = 212
convert numeric(18,2) to varchar

convert numeric(18,2) to varchar


By : AlexA Long
Date : March 29 2020, 07:55 AM
I wish did fix the issue. Why don't you use a real number type instead. Following are the two ways.
code :
DECLARE @T TABLE(
    Val real
)

INSERT INTO @T SELECT 3.01
INSERT INTO @T SELECT 30
INSERT INTO @T SELECT 2.00
INSERT INTO @T SELECT 2.1

SELECT Val FROM @T
DECLARE @T TABLE(
    Val NUMERIC(18,2)
)

INSERT INTO @T SELECT 3.01
INSERT INTO @T SELECT 30
INSERT INTO @T SELECT 2.00
INSERT INTO @T SELECT 2.1

SELECT cast(Val as real) FROM @T
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
Convert varchar to Decimal Arithmetic overflow error converting varchar to data type numeric

Convert varchar to Decimal Arithmetic overflow error converting varchar to data type numeric


By : wendy
Date : March 29 2020, 07:55 AM
like below fixes the issue You have two problems. First of all when you using NULLIF on a string datatype you are implicitly converting it to a numeric datatype. You have specified 0.0 as a second parameter. SQL Server does not know what to choose and it perhaps selects a float or something else. NULLIF should be called after you convert the string to number
Secondly, you have not specified the precision and scale for your DECIMAL data type. According to MSDN the default precision and scale of the DECIMAL data type is 18,0. If you have not specified the scale the numbers will be truncated.
Could not convert varchar to numeric

Could not convert varchar to numeric


By : Dr.Derp
Date : March 29 2020, 07:55 AM
this will help In SQL Server 2012+, you could use TRY_CAST, TRY_CONVERT, TRY_PARSE to avoid error when convert data. If there is any error, these functions return NULL.
For example could could do
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