What is the purpose of where clause in SQL What are the comparison operators you can use in where clause?

What is the purpose of the WHERE clause in SQL? Which comparison operators can you use in a WHERE clause? SQL provides a feature called WHERE clause which is used to extract only particular records that satisfy a listed criterion from the table. This clause can be used along with SELECT, DELETE, and UPDATE statements.

What is the purpose of the WHERE clause in a SQL query?

The SQL WHERE clause limits how many records are returned or affected by a command. It is used with the SELECT, UPDATE, and DELETE clauses. You can use the AND keyword to specify multiple conditions which you want records affected by your command to meet.

What is the purpose of the WHERE clause?

The WHERE clause is used to filter records. It is used to extract only those records that fulfill a specified condition.

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What are the operators that can be used with WHERE clauses?

Operators allowed in The WHERE Clause conditions

  • Operators List:
  • > Greater than operator.
  • < Less than operator.
  • = Equal operator.
  • >= Greater than or equal.
  • <= Less than or equal.
  • <> Not equal.
  • IN To specify the set of values.

Which comparison operators can you use in a logical expression related to the WHERE clause of the select statement?

Answer: The SELECT statement uses the IS NOT NULL and less than (<) comparison operators in the WHERE clause.

What is the purpose of the WHERE clause in a query can you write a query without using the WHERE clause explain?

Using SELECT without a WHERE clause is useful for browsing data from tables. In a WHERE clause, you can specify a search condition (logical expression) that has one or more conditions. When the condition (logical expression) evaluates to true the WHERE clause filter unwanted rows from the result.

What is the significance of the WHERE clause in the update statement?

The WHERE clause specifies which record(s) that should be updated. If you omit the WHERE clause, all records in the table will be updated!

What does follow after the SQL WHERE clause?

The correct answer to the question “What does follow after the SQL WHERE clause” is option (B). Definition of the condition to be met for the rows to be returned.

What is the difference between having & WHERE clause in SQL?

A HAVING clause is like a WHERE clause, but applies only to groups as a whole (that is, to the rows in the result set representing groups), whereas the WHERE clause applies to individual rows. A query can contain both a WHERE clause and a HAVING clause.

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What is WHERE clause with example?

It is used to fetch filtered data by searching for a particular pattern in where clause. result set. Note: The character(s) in pattern are case sensitive. To fetch records of students where NAME starts with letter S.

SQL | WHERE Clause.

operator description
<= Less than or Equal to
= Equal to
<> Not Equal to
BETWEEN In an inclusive Range

Which operator is similar to WHERE clause in SQL?

The SQL LIKE Operator

The LIKE operator is used in a WHERE clause to search for a specified pattern in a column.

Which logical condition operator used in a WHERE clause returns true only when both of the conditions are true?

SQL Logical AND operator

Logical AND compares two Booleans as expression and returns TRUE when both of the conditions are TRUE and returns FALSE when either is FALSE; otherwise, returns UNKNOWN (an operator that has one or two NULL expressions returns UNKNOWN).

What is comparison operator in SQL?

A comparison (or relational) operator is a mathematical symbol which is used to compare two values. Comparison operators are used in conditions that compares one expression with another. The result of a comparison can be TRUE, FALSE, or UNKNOWN (an operator that has one or two NULL expressions returns UNKNOWN).

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