Table literals - sql, PL-SQL Programming

Assignment Help:

Table Literals - SQL

One might expect SQL to support table literals in the manner illustrated in Example 2.2, but in fact that is not a legal SQL expression.

Example: Not a Table Literal

TABLE (

ROW (StudentId 'S1', CourseId 'C1', Name 'Anne'),

ROW (StudentId 'S1', CourseId 'C2', Name 'Anne'),

ROW (StudentId 'S2', CourseId 'C1', Name 'Boris'),

ROW (StudentId 'S3', CourseId 'C3', Name 'Cindy'),

ROW (StudentId 'S4', CourseId 'C1', Name 'Devinder') 

);

It is illegal because row literals in SQL do not use column names. Instead, the column values must be written in the appropriate order, reflecting the order of the columns of the table, as in

ROW ('S1', 'C1', 'Anne')

Moreover, the word VALUES is used in place of TABLE, parentheses is not used around the list of row literals, and the key word ROW is in fact optional.


Related Discussions:- Table literals - sql

In out mode - parameter modes, IN OUT Mode An IN OUT parameter passes ...

IN OUT Mode An IN OUT parameter passes initial values to the subprogram being called and return efficient values to the caller. Within the subprogram, an IN OUT parameter acts

Using operator value in pl sql, Using Operator VALUE: As you may expec...

Using Operator VALUE: As you may expect, the operator VALUE returns the value of an object. The VALUE takes its argument a correlation variable.  For illustration, to return a

Name resolution-naming conventions, Name Resolution In potentially uncer...

Name Resolution In potentially uncertain SQL statements, the names of the database columns take precedence over the names of the local variables and formal parameters. For e.g.

Package dbms output in pl/sql, DBMS_OUTPUT: The Package DBMS_OUTPUT en...

DBMS_OUTPUT: The Package DBMS_OUTPUT enables you to display output from the PL/SQL subprograms and blocks, that makes it easier to test and debug them. The procedure put_ line

When or then key constraints, WHEN or THEN Key Constraints Suppose a t...

WHEN or THEN Key Constraints Suppose a table has two columns representing a period of time throughout which the information conveyed by the other columns is recorded as having

Use the returning clause -improve performance of application, Use the RETUR...

Use the RETURNING Clause Frequently, the application requires information about the row affected by a SQL operation, for illustration, to produce a report or take a subsequent

Need fullcalendar modifications, Project Description: I am looking to ch...

Project Description: I am looking to change FullCalendar to add/delete sql server data when events are removed or dropped from Calendar. Events should only be included by dra

Example of shorthand for a row constraint - sql, Example of Shorthand for a...

Example of Shorthand for a row constraint Example: Shorthand for a row constraint ALTER TABLE EXAM_MARK ADD CONSTRAINT Mark_in_range CHECK (Mark BETWEEN 0 AND 100);

Assignment statement in pl sql, Assignment Statement: The assignment s...

Assignment Statement: The assignment statement sets the present value of the variable, parameter, field, or element. The statement consists of an assignment target followed by

Sql outer join, SQL outer join SELECT * FROM IS_CALLED NATURAL LEFT...

SQL outer join SELECT * FROM IS_CALLED NATURAL LEFT JOIN IS_ENROLLED_ON Note that adding LEFT to an invocation of CROSS JOIN has no effect unless the right-hand operand

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