MySQL LIKE Operator The LIKE operator in MySQL is used in a WHERE clause to search for a specified pattern in a column. It is commonly used for text/filter-based searches. ✅ Syntax
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SELECT column1, column2, ... FROM table_name WHERE column_name LIKE pattern; |
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📊 MySQL COUNT() , AVG() and SUM() Functions In MySQL, aggregate functions like COUNT(), AVG(), and SUM() are used to analyze data by performing calculations on multiple rows and returning one result per group....
📉📈 MySQL MIN() and MAX() Functions In MySQL, the MIN() and MAX() functions are aggregate functions used to find the smallest and largest values in a column. 👉 These functions are very common in...
🚦 MySQL LIMIT Clause The LIMIT clause in MySQL is used to restrict the number of rows returned by a SELECT query. 👉 It’s essential for pagination, top-N queries, and performance optimization. 1️⃣ What...
MySQL DELETE Statement The DELETE statement in MySQL is used to remove existing records from a table. It is commonly use with the WHERE clause to delete specific rows. Syntax
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DELETE FROM table_name WHERE condition; |
table_name: The name...
🔄 MySQL UPDATE Statement The UPDATE statement in MySQL is used to modify existing records in a table. ⚠️ Be careful: Without a WHERE clause, all rows will be updated. 1️⃣ What is UPDATE?...
MySQL NULL Values In MySQL, a NULL value represents missing, unknown, or undefined data. It is not the same as zero (0) or an empty string (”). NULL simply means no value has been...
MySQL INSERT INTO Statement The INSERT INTO statement in MySQL is used to add new records (rows) to a table. It is one of the most commonly used SQL commands for storing data in...
🔢 MySQL ORDER BY Keyword The ORDER BY keyword in MySQL is used to sort the result set of a query in ascending or descending order. 👉 It is widely used in reports, rankings,...
🔀 MySQL AND, OR, and NOT Operators In MySQL, logical operators AND, OR, and NOT are used in the WHERE clause to combine, broaden, or negate conditions. 👉 They are fundamental for filtering data...