Join query, PL-SQL Programming

Assignment Help:

Using a join on 3 tables, select 5 columns and 10 rows from the 3 tables without the use of a Cartesian product

Query:

SELECT E.LAST_NAME, E.FIRST_NAME, S.BUILDING, S.BRANCH, C.COMPANY FROM EMPLOYEE1 E JOIN STAFF S ON E.EMP_ID=S.EMP_ID JOIN CONTRACT C ON C.EMP_ID=S.EMP_ID WHERE ROWNUM<6;

Select distinct rows using joins on 3 tables without the use of a Cartesian product.

Query:

SELECT DISTINCT E.LAST_NAME,E.FIRST_NAME,S.BUILDING,S.BRANCH,C.COMPANY FROM EMPLOYEE1 E JOIN STAFF S ON E.EMP_ID=S.EMP_ID JOIN CONTRACT C ON C.EMP_ID=S.EMP_ID;

 


Related Discussions:- Join query

Inserting objects in pl sql, Inserting Objects: You can use the INSERT...

Inserting Objects: You can use the INSERT statement to add objects to an object table. In the illustration below, you insert a Person object into the object table persons:

Parameter and keyword description - open-for statement, Parameter and Keywo...

Parameter and Keyword Description: cursor_variable_name: This identifies a cursor variable or the parameter formerly declared within the present scope. host_cursor_va

%rowtype - cursors, %ROWTYPE: This attribute gives a record type which ...

%ROWTYPE: This attribute gives a record type which represents a row in the database table or a row fetched from a formerly declared cursor. The Fields in the record and corresp

Referencing records, Referencing Records Unlike the elements in a coll...

Referencing Records Unlike the elements in a collection, that are accessed using subscripts, the fields in a record are accessed by name. To reference an individual field, you

Running the pl/sql wrapper, Running the PL/SQL Wrapper To run the PL/SQ...

Running the PL/SQL Wrapper To run the PL/SQL Wrapper, go through the wrap command at your operating system prompt by using the syntax as shown: wrap iname=input_file [oname=

Using operator deref - manipulating objects in pl sql, Using Operator DEREF...

Using Operator DEREF: You cannot navigate through refs within the PL/SQL procedural statements. Rather than, you should use the operator DEREF in the SQL statement. The DEREF

Introduction to SQl and DQL, which operation is used if we are interested i...

which operation is used if we are interested in only certain columns of a table?

Using invoker rights in pl sql, Using Invoker Rights: By default, the ...

Using Invoker Rights: By default, the stored procedure executes with the privileges of its definer, not its invoker. These procedures are bound to the schema in which they inh

Do you know anyone that can do this type of coding or not?, Task 2 [12 mark...

Task 2 [12 marks] Write the package body for the following package specification (the detailed description of each function and procedure is provided in the appendix below). Place

Relational operators and logical operators, Relational Operators and Logica...

Relational Operators and Logical Operators It prepares the ground for subsequent sections in which each specific relational operator is paired with its logical counterpart, su

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd