Author: codertutor_3o6d0o

The PostgreSQL HAVING clause is a powerful tool that allows you to filter and aggregate data in a query based on conditions applied to the result of a GROUP BY clause. While the WHERE clause is used to filter rows before...

PostgreSQL Group By The PostgreSQL GROUP BY is used when at least one of the aggregation functions(count, max, min, sum, avg) is used in a select. Group By syntax SELECT column_name1, column_name2, function(column_name1) FROM table_name GROUP BY column_name1, column_name2 Group By...

PostgreSQL Order By The PostgreSQL ORDER BY is used to sort the records of a select. Order By syntax SELECT * FROM table_name ORDER BY column_name ASC | DESC; Order By example Goods table id good_type name description price 1 A...

PostgreSQL Like The PostgreSQL LIKE is used to return rows if the operand matches a pattern in a select. Like syntax SELECT * FROM table_name WHERE column_name LIKE pattern; Like example Goods table id good_type name description price insert_date 1 A...

PostgreSQL Between The PostgreSQL BETWEEN returns rows between two values from a select query. Between syntax SELECT * FROM table_name WHERE column_name BETWEEN x_value AND y_value; Between example Goods table id good_type name description price insert_date 1 A Car_1 Car 1...