1. Change Christine I. Haas's Employee Number to 00 followed by last four digits of your SS number and list the new Employee Number. Update emp Set empno = '00xxxx" Where lastname = HAAS'; EMPNO FIRSTNAME MIDINIT LASTNAME WORKDEPT PHONE HIREDATE JOB EDUCATION SEX BIRTHDATE SALARY Q R STINE I HAAS 3970 19 5 01 01 PACS 10 F 1903 00 14 52750.00 2. List names of all employees, their hire date and job. Select lastname, hiredate, job From sap lastname hiredate | job HAAS 1965-01-01 PRES THOMPSON 1873-10-10 MANAGER KWAN 1975 04-05 MANAGER GEYER 1949 08-17 MANAGER STERN 1973-09-14 MANAGER PULASKI 1960-09-30 MANAGER HENDERSON 1970-08-15 MANAGER SPENSER 1980-06-19 MANAGER LUCCHESI 1959-05-16 SALESREP O'CONNEL 1963-12-05 CLERK QUINTANA 1971-07-28 ANALYST NICHOLAS 1876-12-15 ANALYST ADAMSON 1972-02-12 DESIGNER PIANKA 1977-10-11 DESIGNER YOSHIMURA 1978 09-15 DESIGNER SCOUTTEN 1973-07-07 DESIGNER WALKER 1974-07-26 DESIGNER BROWN 1966-03-03 DESIGNER JONES 1979-04-11 DESIGNER LUTZ 1969-00-29 DESIGNER JEFFERSON 1968-11-21 CLERK MARINO 1979-12-05 CLERK SMITH 1969-10-30 CLERK JOHNSON 1975 09-11 CLERK PEREZ 1980-09-30 CLERK 3. How many employees are there