How does the STUFF function help in manipulating string data in SQL?
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SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
How does the STUFF function help in manipulating string data in SQL?
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- Assignment : PL/SQL Practice Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL. Write an anonymous PL/SQL block that will update the salary of all doctors in the Pediatrics area by 1000 (Note: Current salary + 1000). Verify that the salary has been updated by issuing a select * from doctor where area = ‘Pediatrics’. You may have to run the select statement twice to check the data before and after the update.SBN Title Author 12345678 The Hobbit J.R.R. Tolkien 45678912 DaVinci Code Dan Brown Your student ID DBS311 Your Name use the following statement to Write a PL/SQL Function that accepts 4 parameters, 2 strings representing students names, and 2 integers representing the marks they received in DBS311. The function will determine which student had the higher mark and return the name of the student. If the marks were the same, then return the word "same" and return "error" if an error occurs or the calculation can not be determined.INFO 2303 Database Programming Assignment : PL/SQL Practice Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL. Question: Write an anonymous PL/SQL block that will delete all patients for doctors that works in the Family Practice Verify that patients have been deleted accordingly. Then do a select * from patients where doc_id = (select doc_id from doctor where area = ‘Family Practice’. You should get no rows. Patietn table: CREATE TABLE PATIENT(PT_ID NUMBER(3),PT_LNAME VARCHAR2(15),PT_FNAME VARCHAR2(15),PTDOB DATE,DOC_ID NUMBER(3),NEXTAPPTDATE DATE,LASTAPPTDATE DATE,CONSTRAINT PATIENT_PT_ID_PK PRIMARY KEY (PT_ID),CONSTRAINT PATIENT_DOC_ID_FK FOREIGN KEY(DOC_ID)REFERENCES DOCTOR); INSERT INTO patient VALUES(168, 'James', 'Paul', TO_DATE('14-MAR-97'), 432, TO_DATE('01-JUL-03'), TO_DATE('01-JUN-03'));INSERT INTO patient VALUES(331, 'Anderson', 'Brian', TO_DATE('06-MAR-48'), 235,TO_DATE('01-JUL-03'), TO_DATE('01-JUN-03'));INSERT INTO patient…
- INFO 2303 Database Programming Assignment : PL/SQL Practice Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL. Write an anonymous PL/SQL block that will update the salary of all doctors in the Pediatrics area by 1000 (Note: Current salary + 1000). Verify that the salary has been updated by issuing a select * from doctor where area = ‘Pediatrics’. You may have to run the select statement twice to check the data before and after the update.Assignment : PL/SQL Practice Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL. Write an anonymous PL/SQL block that will insert a new doctor into the DOCTOR Verify that insert has been done successfully by issuing a select * from doctor.Instructor (Instructor_Id, Instructor_Name, specialization, Address, #Department_Id)Write in PL/SQL a function named NumberInstructor_department that takes the id of a department as an input parameter and returns the number of instructors who are working in that department.
- What method of Statement is used if you want to execute DELETE SQL statement?SQL QUERIES Employees(EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,COMMISSION_PCT,MANAGER_ID,DEPARTMENT_ID)Department(DEPARTMENT_ID,DEPARTMENT_NAME,MANAGER_ID,LOCATION_ID)A: Write a query in SQL to display the minimum, maximum salary and DEPARTMENT_ID of all thosedepartments whose minimum salary is greater than 4000 in ascending order.SQL QUERIES Employees(EMPLOYEE_ID,FIRST_NAME,LAST_NAME,EMAIL,PHONE_NUMBER,HIRE_DATE,JOB_ID,SALARY,COMMISSION_PCT,MANAGER_ID,DEPARTMENT_ID)Department(DEPARTMENT_ID,DEPARTMENT_NAME,MANAGER_ID,LOCATION_ID)A: Write a query in SQL to display the minimum, maximum salary and DEPARTMENT_ID of all thosedepartments whose minimum salary is greater than 4000 in ascending order. B: Write a Query in SQL to display characters only from 2 to 5 of “Last_Name” from Employees table. C: Write a query in SQL to display the HIRE_DATE of every employee in following format.Format: 11-july-2019
- INFO 2303 Database Programming Assignment # : PL/SQL Procedure & Function Practice Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL. Write a script to create a PL/SQL procedure called findSal that displays the doctor’s salary and bonus after passing in the doc_id into the procedure. For example, if you pass in doc_id 504, you will get the following output. execute findSal(504) The salary for Dr.Cotner (504) is: 11500 The bonus is: 7500 PL/SQL procedure successfully completed.INFO 2303 Database Programming Assignment : PL/SQL Practice Note: PL/SQL can be executed in SQL*Plus or SQL Developer or Oracle Live SQL. Write an anonymous PL/SQL block that will delete all patients for doctors that works in the Family Practice Verify that patients have been deleted accordingly. Then do a select * from patients where doc_id = (select doc_id from doctor where area = ‘Family Practice’. You should get no rows.In Oracle PL/SQL programming language, %TYPE keyword would give you some advantages when you are declaring local variables. Describe at least one but maximum two benefits of %TYPE usage.