Ascii Code For Single Quote In Sql
SQL (Structured Query Language) is a programming language used for managing data in a relational database management system (RDBMS). It is used to create, update, and retrieve data from databases. One of the most common problems faced by SQL programmers is the use of single quotes in SQL queries. In this article, we will discuss the ASCII code for a single quote in SQL and how to use it in SQL queries.
What is ASCII code?
ASCII (American Standard Code for Information Interchange) is a character encoding standard used to represent text in computers. Each character in ASCII is represented by a unique number between 0 and 127. This number is known as the ASCII code.
Why use ASCII code for single quotes in SQL?
In SQL, single quotes are used to enclose string values. If a string contains a single quote, then it can cause errors in SQL queries. To avoid these errors, we can use the ASCII code for a single quote instead of the actual character.
How to use ASCII code for single quotes in SQL?
To use the ASCII code for a single quote in SQL, we need to precede the ASCII code with the character N and enclose it in single quotes. The N character is used to indicate that the following string is a Unicode string.
For example, to search for a string that contains a single quote, we can use the following SQL query:
SELECT * FROM table_name WHERE column_name LIKE N'%'+CHAR(39)+'%';
Here, CHAR(39) is the ASCII code for a single quote. The % sign is used to indicate any number of characters before or after the single quote.
Conclusion
In SQL, the use of single quotes can cause errors in queries. To avoid these errors, we can use the ASCII code for a single quote instead of the actual character. By using the N character and enclosing the ASCII code in single quotes, we can search for strings that contain single quotes without any errors. Remember to always use the correct syntax when using the ASCII code for single quotes in SQL queries.