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

Pits, PITS Depressions in secondary cell wall is called pit. A pi...

PITS Depressions in secondary cell wall is called pit. A pit present on the free cell wall surface without its partner is called Blind pit. It consists of 2 parts -

Using host arrays - bulk bind performance improvement, Using Host Arrays ...

Using Host Arrays The Client-side programs can use anonymous PL/SQL blocks to bulk-bind input and output host arrays. However, this is the well-organized way to pass the colle

Create GUIs in PL/SQL, i NEED TO CREATE 3 guiS IN pl/sql sERVER PAGE FORM

i NEED TO CREATE 3 guiS IN pl/sql sERVER PAGE FORM

Triggers, At times, customers make mistakes in submitting their orders and ...

At times, customers make mistakes in submitting their orders and call to cancel the order. Brewbean’s wants to create a trigger that automatically updates the stock level of all pr

Homework, What are the rates for help in writing PL/SQL procedures and func...

What are the rates for help in writing PL/SQL procedures and functions?

%type attribute - syntax, %TYPE Attribute The %TYPE attribute gives the...

%TYPE Attribute The %TYPE attribute gives the datatype of a record, field, nested table, database column, or the variable. You can use the %TYPE attribute as the datatype speci

Example of wrap operator - sql, Example of WRAP Operator - SQL The eff...

Example of WRAP Operator - SQL The effect of Example can be obtained in SQL but note that one needs to write down not only the names of the columns being wrapped but also the

Explicit cursors, Explicit Cursors The set of rows returned by the que...

Explicit Cursors The set of rows returned by the query can include zero, one, or multiple rows, depending on how many rows meet your search criteria. Whenever a query returns

Predicate - sql, Predicate - SQL Consider the declarative sentence-a p...

Predicate - SQL Consider the declarative sentence-a proposition-that is used to introduce this topic:  "Student S1, named Anne, is enrolled on course C1." Recall that th

Example of null operator - nino rule, Example of Null operator - NiNo Rule ...

Example of Null operator - NiNo Rule If we wanted to make HIGHER_OF adhere to "NULL in, NULL out"-let's call it the NiNo rule-we would have to write something like what is sho

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