MCQ IN COMPUTER SCIENCE & ENGINEERING

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COMPUTER SCIENCE AND ENGINEERING

SQL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What will be the outputI:SELECT INSTR(’KVMANKHURD’, ‘MAN’);
A
2
B
3
C
5
D
NONE
Explanation: 

Detailed explanation-1: -SQL queries adhere to a specific order when evaluating clauses, similar to how mathematical operations adhere to PEMDAS or BIDMAS. From the eyes of the user, queries begin from the first clause and end at the last clause. However, queries aren’t actually read from top to bottom when carried out.

Detailed explanation-2: -The SELECT clause specifies one or more columns to be retrieved; to specify multiple columns, use a comma and a space between column names. To retrieve all columns, use the wild card * (an asterisk).

Detailed explanation-3: -An UPDATE statement without a WHERE clause will update all the rows of the table.

Detailed explanation-4: -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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