... programming perspective to
them. This book will allow the Oracle user to use SQL
in new and exciting ways.
This book contains nine chapters. It begins by
reviewing some of the common SQLfunctions ... string has leading and trailing
spaces ')
FROM dual
Which gives:
TRIM('THISSTRINGHASLEADINGANDTRAILINGSPACES
This string has leading and trailing spaces
Both the leading and trailing ... function_illustrator
WHERE lineno = 0
Which gives:
POWER(VALUE,2)
81
Ordinary TrigonometryOrdinary Trigonometry
Functions
SQL s ordinary trigonometry functions include:
SIN — Returns the sine of a value.
COS...
... categorize Oracle s SQLfunctions into simple
SQL functions, numeric functions, statistical functions,
string functions, and date functions. In this chapter, we
selectively illustrate several functions ... string has leading and trailing
spaces ')
FROM dual
Which gives:
TRIM('THISSTRINGHASLEADINGANDTRAILINGSPACES
This string has leading and trailing spaces
Both the leading and trailing ... Aggregate FunctionsinSQL 111
RATIO-TO-REPORT 115
Windowing Subclauses with Physical Offsets in
Aggregate Analytical Functions 120
An Expanded Example of a Physical Window 127
Displaying a Running...
... vbCrLf
strSQL &= "WHERE CustomerID = @Cust_Id and OrderDate =
@Order _Date& quot;
' Store the SQL String
Me.lblSQLString.Text = strSQL
' Use the SQL String to build ... setting the initial values, you are then ready to use the variables within the rest of your
procedure, any way that you need them, again, by using the @varname syntax.
Utilizing Built -In Functions ... nor are there
necessarily as many. For instance, instead of a Date( ) function, which is used in Visual
Basic, in T -SQL, you use the GetDate() function. Functions also will not necessarily
return...
...
Oracle SQL Jumpstart with Examples
!
The title of this book was originally OracleSQL Reference, but during
the writing process, we set our hearts on the new title
Oracle SQL Jumpstart
with ...
Chapter 17. XML in Oracle
Oracle SQL allows for generation and manipulation of XML documents in
Oracle Database. This chapter introduces various aspects of using XML in
Oracle SQL.
Chapter ... of SQL
Why are we going backward in time looking at things no longer in use? In
order to understand SQL code effectively, we need to understand the most
basic forms of SQL, having much to do with...
... possible inOracleSQLwith respect to SQL coding can
now be coded and executed from within PL /SQL. PL /SQL is now
fully syntactically equivalent withOracle SQL. In other words, all
Oracle SQL commands ... withOracle Database 10
g
.
2.1 New Features inOracle Database 10
g
Oracle Database 10
g
contains the following SQL and PL /SQL features.
2.1.1 OracleSQL Improvements inOracle ... continuing line mode, type a period (.) alone on a line and press Enter.
You will be returned to the SQL prompt so you can begin again.
Another form of the SQL* Plus tool can be found within Oracle...
... sorts in order of the second column, the third column,
and the first column. What’s that in English? PLAYING_TIME by TITLE
by RECORDING _DATE or RECORDING _DATE sorted within
TITLE, sorted within PLAYING_TIME.
... the query and results in descending order of BAL-
ANCE within ascending order by DUE _DATE.
That covers the basics of sorting in ascending order, descending order,
and using one or more columns. ... built -in SQLfunctions or even user-
defined functions. This is the query used in Figure 6.8.
Note:
Using expressions in the ORDER BY clause can hurt performance.
1
SELECT RECORDING _DATE, ...
... report with summaries, breaks, custom-
ized headings, and variables. Now let’s examine the report-generating possi-
bilities in another SQL* Plus tool, iSQL*Plus.
8.4 Using iSQL*Plus
As you know, iSQL*Plus ... 8.2 Using Scripts and Variables
LINESIZE 132; to the end of the SQL* Plus configuration file called GLO-
GIN .SQL in the $ORACLE_ HOME/sqlplus/admin directory. Rarely do I
need to use other settings. ... using
scripts and variables.
8.2 Using Scripts and Variables
SQL* Plus supports a simple method of defining and prompting for variables
using ampersand characters (&). Any string beginning with...
... 9.2 Single-Row Functions
REMAINDER(n, m). This function is a remainder or modulus
function specifically for binary floating-point numbers.
The next section covers date functions.
9.2.3 Date Functions
ADD_MONTHS (date, ... to join tables or
row sets together. Now let’s examine different join types in detail and by
example.
10.3 Examining Different Types of Joins
Let’s examine each type of join in turn using ... useful functions. As already stated, the remaining func-
tions tend to be obscure and seldom used. In fact, some functions included
in this chapter are obscure. Let’s begin with string functions.
...
... group functions available to use with the GROUP BY
clause. Functions operating on groups of rows fall into the following cate-
gories:
Aggregate Functions
. Functions that summarize data into ... expression ]) WITHIN GROUP
(ORDER BY expression [, expression ]). The first and last rank-
ing row in a sorted group of rows.
11.2.1.5 Grouping Functions
Grouping functions are used with analysis ... self-join query following lists SONG_ID values appearing on more
than one CD. Note that the line in the WHERE clause containing the ine-
quality operator will prevent any song from being listed...
... ]]]])
. Replaces a string within a string.
Regular expression functions are much like their relative Oracle built -in
string functions. See Chapter 9 for Oracle built -in string functions.
14.2.2 ... validate a set of columns against another set of columns
in a WHERE clause or as a tuned FROM clause row filter (inline view), as
shown in the two examples following.
The first example following ... allows flashing back to the state that data was in
at a previous point in time. Oracle Database 9
i
allowed AS OF flashback
queries back to a point in time using a timestamp or SCN. Oracle Database
...