The meaning of SQL Server four matching characters

The meaning of the four matches is 0 or more any character representing an arbitrary character [] any single character within the specified range [^] a string with a match in any single character that is not in the specified range must be enclosed in quotation marks. For example, the following example: Like ' br% ' returns to "BR" The beginning of any string. Like ' br% ' returns any character that starts with "Br". Like '%een ' returns any string that ends with "een". Like '%en% ' returns any string containing "en". Like ' en ' returns a string of three characters ending with "en". Like ' [ck]% ' returns any string that starts with "C" or "K".　　Like ' [S-v]lng ' returns a string of four characters, ending with "ing," which begins with an ' m[^c]% ' to return an arbitrary string starting with "M" and the second character is not "C". Note: Using the LIKE operator usually causes SQL Server to not use the index associated with the given table. It tells SQL Server to compare the specified string and find any content that matches the provided matching character. Because of this, it is not recommended to use this type of search or comparison on large tables, or at least to remind users that it is important for the system to find the waiting time required to meet the criteria for searching data rows.
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