How to find length of string in sql server

SQL | Character Functions with Examples

how to find length of string in sql server

Definition and Usage. The LEN() function returns the length of a string. Note: Trailing spaces at the end of the string is not included when calculating the length .

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By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. It only takes a minute to sign up. I'm developing a SQL Server stored procedure and I want to get the last characters of a varchar 38 column. I know there will always be at least 18 characters and I don't know the exact length of the column, because it is variable.

Character functions accept character inputs and can return either characters or number values as output. The various datatypes are categorized into three different datatypes :. These functions convert to upper and to lower case, respectively, and return the CHAR values fixed length if the strings they are called on to convert are fixed-length CHAR arguments.
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Correction on the code - two things: 1. The result is 10, not 8. There are two spaces after "C". All suggestions are welcome. Its all about SQL Server. I remember, when one my of colleague was importing SSN Social Security Numbers from one table to other but with following query he verified that each SSN is in correct 9 digit formats. On executing above query, he got 9 as output which was a green signal but when he tried to import, query failed with error because targeted table had SSN column with only 9 character space allowed and there were rows which had more then 9 character of length.

There is sometimes a need to figure out the maximum space that is being used by a particular column in your database. You would initially think that the LEN function would allow you to do this, but this function does not work on Text, NText or Image data types, so how do you figure out the length of a value in a column that has one of these data types? This function can be used on all data types in your table. If you wanted to find out the maximum length used for all of your records you could issue a command such as the following:. That's all there is to it.

By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Setup a private space for you and your coworkers to ask questions and share information. In a view, i have a column comments which may contain large string. I just want to select first 60 characters and append the ' Learn more about Teams.



SQL Server LEN Function

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April 14, by Kenneth Fisher. Little wonder since that is exactly what this function is for. However not everyone realizes the small gotcha with this very basic function. Looks a little goofy but it works. Then comes the function DataLength. This function also returns the length of a string. Or does it?

Description. In SQL Server (Transact-SQL), the LEN function returns the length of the specified string. It is important to note that the LEN function does not.
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This web site uses cookies. By using the site you accept the cookie policy. I described the process, using the Len function, in an earlier article. However, this function is only compatible with some of the data types available in SQL Server. If you need to determine the number of characters present in a Text or National Text NText value, you must use a different method. To demonstrate, run the following script against a new, test database. This creates a simple table with four textual columns, and inserts a single row.

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