SQL Server 2022: What’s New – New and Enhanced Features.a comma) or any other characters that do not have a meaning as a number. decimal, numeric, etc.), you need to be careful in order for your varchar value, not contain any digit grouping symbols (i.e. In general, when converting varchar values to numbers (i.e. So, if we remove the comma from the above example, we can see that the conversion is successful. Also, you need to make sure that you only use the decimal symbol, in this case the dot (.), and not any digit grouping symbols, etc. Note: At this point, you also need to make sure that the varchar value to be converted, is the actual number you wish to convert to the numeric data type. In order to resolve the conversion error, you just need to remove the comma (,) from the varchar value that you want to convert to numeric. Therefore, at the time of its conversion to the numeric data type, the comma is considered an illegal character for the destination data type (numeric) and that’s why you get the error message. When you execute the above T-SQL code, you will get the below exact error message:Įrror converting data type varchar to numeric.Īs you might have observed in the above example, the variable, besides the dot (.), it also contains a comma (,). SET AS NUMERIC(10,2)) as ConvertedNumber You can find this example below: DECLARE VARCHAR(50) Now, let’s reproduce the conversion error by trying to convert a “problematic” varchar value to numeric.
The course, among other, features over than 30 live demonstrations! ( Lifetime Access/ Live Demos / Downloadable Resources and more!) Sharpen your SQL Server database programming skills via a large set of tips on T-SQL and database development techniques. (special limited-time discount included in link). Learn more tips like this! Enroll to our Online Course!Ĭheck our online course titled “ Essential SQL Server Development Tips for SQL Developers” So, even though I specified 123456.7890 as the numeric value, it was indirectly converted to a numeric(10,2) value and that’s why it returned the value 123456.79 In the above example I specified as precision 10 and as scale 2. The number returned by the above T-SQL query is: 123456.7890 Here’s an example of a numeric data type value in SQL Server: DECLARE NUMERIC(10,2) Its value can range between 1 and the value specified for precision.
Scale, defines the number of decimal digit that will be stored to the right of the decimal point. Precision defines the maximum number of decimal digits (in both sides of the number) and its value range is between 1 and 38. The numeric data type takes two arguments, that is precision and scale. As described in the relevant MS Docs article, the numeric data type has fixed precision and scale, and it has equivalent functionality with the decimal data type. Prior to discuss how you can reproduce and resolve the issue, it is important that you first understand the numeric data type in SQL Server. Read on to find out the reason for getting this error message and how you can easily resolve it within just a minute. This error is similar with the conversion error you might get when you are trying to convert a varchar to float, etc. While developing data processes in SQL Server, under certain circumstances, you might get the error message: error converting varchar to numeric.
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