11/23/2023 0 Comments Mysql like on selectI was able to use the CHARINDEX function to search for all products that have the word “computer” in them by running this query: SELECT * FROM products_data WHERE CHARINDEX('computer', product_name, 0) > 0 If I specify 25 as the position, SQL Server would find a match starting from the “freeCodeCamp” text: SELECT CHARINDEX('free', 'free is the watchword of freeCodeCamp', 25) That’s because ‘f’ itself is at position 1: You can see the word free was found in position 1. Here’s an example: SELECT CHARINDEX('free', 'free is the watchword of freeCodeCamp') position Unlike many other languages, counting in SQL is 1-based. If it finds a match, it returns the index where it finds the match, but if it doesn’t find a match, it returns 0. The syntax looks like this: CHARINDEX(substring, string, start_position) The CHARINDEX() function takes 3 arguments – the substring, the string, and the starting position. How to Query for Strings in SQL Server with the CHARINDEX FunctionĬHARINDEX() is an SQL server function for finding the index of a substring in a string. This method also works fine in SQL Server: For example, I was able to get the product that starts with “lap” with this query: SELECT * FROM products_data For Example, I got every product that ends with “er” by running this query: SELECT * FROM products_dataĪnd if it’s at the end of a string, it means, find that substring at the start of a string. So, if you put the percentage sign at the start of a substring you’re searching by, it means, find that substring at the end of a string. The percentage sign before and after the word “computer” means, find the word “computer” whether it’s in the end, middle, or start. I was able to get all the products that have the word “computer” in them by combining the WHERE clause and LIKE operator by running the query below: SELECT * FROM products_data You can combine these two to search for a string or a substring of a string. The LIKE operator, on the other hand, lets you find a particular pattern in a column. The WHERE clause lets you get only the records that meet a particular condition. How to Query for Strings in SQL with the WHERE Clause and LIKE Operator How to Query for Strings in MySQL with the SUBSTRING_INDEX() Function.How to Query for Strings in SQL Server with the PATINDEX Function.How to Query for Strings in SQL Server with the CHARINDEX Function.How to Query for Strings in SQL with the WHERE Clause and LIKE Operator.Since I’ll be showing you how to search for a string in SQL Server too, I have the products_data table in a products database: Running SELECT * FROM products_data shows me all the entries in the table: I‘ll be using a table I call products_data in a products_schema database. In this article, I’ll show you how to locate strings and substrings in MySQL and SQL Server. If you’re working with a database, whether large or small, there might be occasions when you need to search for some entries containing strings.
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