Which clause is used to select specific rows in a table based on a condition?

Which clause is used to select specific rows in a table based on a condition?

The WHERE clause contains one or more logical expressions that evaluate each row in the table. If a row that causes the condition evaluates to true, it will be included in the result set; otherwise, it will be excluded.

Which SQL clause is used to filter the rows returned based on a specified condition?

WHERE clause
You use the WHERE clause in the SQL statements such as SELECT, UPDATE and DELETE to filter rows that do not meet a specified condition.

How do I select a specific record in SQL?

The SQL SELECT Statement

1. SELECT column1, column2, FROM table_name;
2. SELECT * FROM table_name;
3. Example. SELECT CustomerName, City FROM Customers;
4. Example. SELECT * FROM Customers;

What is the order of SELECT statement clauses?

In fact, the logical order is this: The FROM clause: First, all data sources are defined and joined. The WHERE clause: Then, data is filtered as early as possible. The CONNECT BY clause: Then, data is traversed iteratively or recursively, to produce new tuples.

WHERE is used to filter rows?

To filter rows and columns: Right-click a row or column member, select Filter, and then Filter. In the left-most field in the Filter dialog box, select the filter type: Keep: Include rows or columns that meet the filter criteria.

WHERE clause in a query can filter?

The WHERE clause is used in SQL filter queries to apply the conditions in SELECT, INSERT, UPDATE, or DELETE sentences.

How to filter rows based on specified conditions in SQL?

Summary: in this tutorial, you will learn how to use the SQL WHERE clause to filter rows based on specified conditions. To select certain rows from a table, you use a WHERE clause in the SELECT statement. The following illustrates the syntax of the WHERE clause in the SELECT statement: SELECT column1, column2, FROM table WHERE condition;

How to select rows from a table in SQL?

Introduction to SQL WHERE clause. To select certain rows from a table, you use a WHERE clause in the SELECT statement. The following illustrates the syntax of the WHERE clause in the SELECT statement: SELECT column1, column2, FROM table WHERE condition; The WHERE clause appears immediately after the FROM clause.

How to use conditional logic in SQL queries?

The test against the ID column produces a Boolean result and this enables us to produce the same result with less code. This Boolean matching can be really useful when dealing with numeric type data types as it allows rows to be grouped easily based on the numeric value.

Can a group by query be used alone?

Any help will be appreciated. GROUP BY cannot be used alone because it only returns 1 row per group ( category ). You can use a sub query with flag = 1 and INNER JOIN: DISTINCT aren’t needed if, for each category, only 1 row can have flag = 1.