What is Like Operator and Wild Card Characters in SQL?
#like #wildcard #sqltutorialforbeginners
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Chapters:
00:06 Introduction to LIKE Operator and Wildcard Characters in SQL
00:11 Purpose of LIKE Operator in SQL
00:16 Wildcard Characters: Percentage and Underscore in SQL
00:26 Filtering Data with LIKE Operator
00:35 SQL Query Example: Setting Up the Table
00:44 Using WHERE Clause with LIKE Operator
00:53 Handling Spaces in String Values in SQL
01:03 Using LENGTH Function to Identify Space Issues in SQL
01:12 Applying LIKE with Underscore Wildcard in SQL
02:07 Filtering Specific Patterns Using Multiple Underscores in SQL
02:55 Using LIKE with Percentage Wildcard in SQL
03:15 Resolving Complex String Issues with Percentage Wildcard in SQL
03:45 Practical Use of LIKE Operator and Wildcards
05:46 LIKE Operator in IF Statements in SQL
Hello everyone, welcome to Educate Cube. Today, we'll discuss the LIKE operator and wildcard characters in SQL.
The LIKE operator is used to search for specified patterns within column values. It is commonly paired with wildcard characters, such as the percentage (%) and underscore (_) symbols.
The percentage (%) wildcard matches any number of characters, making it useful for finding patterns regardless of their length. For instance, '%South%' will match 'South' regardless of any characters or spaces around it. On the other hand, the underscore (_) wildcard matches exactly one character. For example, '_West' will match ' West' (with a space before 'West').
We also discussed practical scenarios, such as filtering records where the region is 'West' or dealing with unexpected spaces or tabs in data. By using the LIKE operator and wildcards, we can effectively filter and identify patterns in our data.
In summary, the LIKE operator, combined with % and _, is a powerful tool for searching and filtering patterns in SQL, especially in more complex queries.
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