The FROM SQL clause is used to...
A. specify what table we are selecting or deleting data FROM
B. specify range for search condition
C. specify search condition
D. None of these
Answer: Option A
Solution(By Examveda Team)
The FROM SQL clause is used to specify from which table we are selecting or deleting data. It defines the source table from which data will be retrieved or modified in a SQL query. Here's the breakdown:Option A:
specify what table we are selecting or deleting data FROM
This option correctly describes the purpose of the
FROM
clause, which is to specify the table from which data operations will be performed.Option B: specify range for search condition
This is not the primary purpose of the
FROM
clause. It is used for table specification, not defining search ranges.Option C: specify search condition
The
FROM
clause is not used to specify search conditions. Search conditions are typically defined in the WHERE
clause.Option D: None of these
Option A is a valid description of the
FROM
clause's purpose.So, the correct answer is
Option A: specify what table we are selecting or deleting data FROM
.
Which of the following query finds the names of the sailors who have reserved at least one boat?
{=SELECT DISTINCT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;
~SELECT s.sname FROM sailors s, reserves r WHERE s.sid = r.sid;
~SELECT DISTINCT s.sname FROM sailors, reserves WHERE s.sid = r.sid;
~None of These
}
Find the name of those cities with temperature and condition whose condition is either sunny or cloudy but temperature must be greater than 70oF.
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' OR temperature > 70;
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' OR temperature > 70;
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' OR condition = 'cloudy' AND temperature > 70;
SELECT city, temperature, condition FROM weather WHERE condition = 'sunny' AND condition = 'cloudy' AND temperature > 70;
pls tell me the answer for this