It is offered to count the number of records in the selected table. It is used with the select statement.
Syntax: pick count(*) from table_name
Here table_name is offered as persons.
So, the variety of records in the "persons" table can uncover out as :
SELECT count(*) indigenous persons;
Q1. On the communication of over given table structures, retrieve the distinctive employee identifier (EMPID) of every employees of college who space working on project No.20, 30 and also 40. Q2. Given listed below are two statements to discover the sum of wages of every employees the the English department as well as the maximum. Minimum and also average value in English department.STATEMENT I: pick SUM (SALARY). MAX (SALARY), MIN (SALARY).AVG (SALARY) native EMPLOYEE, DEPARTMENTWHERE DEPTNO=DIDAND DNAME='ENGLISH';STATEMENT II: select SUM (SALARY), MAX (SALARY), MIN (SALARY),AVG (SALARY) indigenous EMPLOYEE, DEPARTMENTWHERE DNAME='ENGLISH';In the light of the over statements, pick the exactly answer native the alternatives given below Q3. Given two relations R1(A, B) and also R2(C, D), the result of complying with querySelect unique A, Bfrom R1, R2is guaranteed to be exact same as R1provided among the following problem is satisfied. Q6. Consider the adhering to schema:Emp (Empcode, Name, Sex, Salary, Deptt)A basic SQL ask is enforcement as complies with :SELECT Deptt native EmpWHERE sex = ‘M’GROUP by DeptHaving avg (Salary) > pick avg (Salary) native EmpThe output will be Q7. Suppliers(Sid: integer, sname:string, city:string, street:string)Parts(pid:integer, pname:string, color:string)Catalog(sid:integer, pid:integer, cost:real)Consider the complying with relational ask on the above database:SELECT S.snameFROM service providers SWHERE S.sid no IN (SELECT C.sidFROM catalog CWHERE C.pid no IN (SELECT P.pidFROM components PWHERE P.color ‘blue’))Assume the relations matching to the above schema space not empty. I m sorry of the following is the correct interpretation of the over query? Q9. The relation publication (title, price) has the titles and prices of different books. Assuming the no two publications have the very same price, what walk the adhering to SQL questions list?