Tài liệu Oracle SQL Jumpstart with Examples- P6 pptx

... Used? Subqueries can be used almost anywhere in an SQL statement, in any SQL command where an expression can be placed. Following are listed SQL statement clauses in which a subquery can be placed: ... func- tion, we start with the probability and compute the corresponding value for the cumulative distribution. 11.2.1.4 Ranking Functions  RANK(expression [, expression ]) WITHI...

Ngày tải lên: 24/12/2013, 12:17

... section looks at dynamic SQL. Dynamic SQL is SQL or PL/ SQL code generated on the fly, usually generically from within an applica- tion or some other calling process. 24.6 Dynamic SQL Dynamic or generic ... PL /SQL 549 Chapter 24 Now let’s describe some small facts about changing data from within PL /SQL blocks. 24.5 Changing Data in PL /SQL Not only can data in tables be changed f...

Ngày tải lên: 21/01/2014, 18:20

... Oracle SQL Jumpstart with Examples ! The title of this book was originally Oracle SQL Reference, but during the writing process, we set our hearts on the new title Oracle SQL Jumpstart with ... Chapter 2. New Features of Oracle SQL This chapter covers new Oracle SQL and PL /SQL features for both Oracle Database 10 g and Oracle Database 9 i . C...

Ngày tải lên: 24/12/2013, 12:17

... with Oracle Database 10 g . 2.1 New Features in Oracle Database 10 g Oracle Database 10 g contains the following SQL and PL /SQL features. 2.1.1 Oracle SQL Improvements in Oracle ... introduction to PL /SQL programming is covered in Chapter 24.  Everything possible in Oracle SQL with respect to SQL coding can now be coded and executed from within PL...

Ngày tải lên: 24/12/2013, 12:17

... time.  Parallel queries execute SQL statements in parallel, preferably using multiple CPU platforms and Oracle Partitioning. Let’s look at some of the query types briefly, starting with the simple query. Chap4.fm ... *. An asterisk (*) represents all column names within a query when used in the SELECT statement. Square brackets mean you can include the items within the square brack- ets...

Ngày tải lên: 24/12/2013, 12:17

... have three scripts named A .SQL, B .SQL, and C .SQL in the C:\TEMP directory /tmp on UNIX. The script A .SQL has an SQL* Plus command to run the B .SQL and B .SQL calls C .SQL. You could start the primary ... with MUSICCD_ID = 1. An editing session can be initi- ated from within SQL* Plus using the EDIT command. EDIT In the background, SQL* Plus writes a file named AFIEDT.BUF and then...

Ngày tải lên: 24/12/2013, 12:17

... Web browser and the server. 8.4.2 iSQL*Plus versus SQL* Plus The main features of iSQL*Plus are similar to the features of SQL* Plus or SQL* Plus Worksheet:  Enter SQL commands in a box and click ... on Oracle SQL single-row functions can be found in Oracle documentation both online and in Oracle software docu- mentation. Specific reference details of all functions can be found i...

Ngày tải lên: 24/12/2013, 12:17

... expressions, and Oracle Expression Filter, the latter two of which are new to Oracle Database 10g. Note: Because regular expressions and Oracle Expression Filter are new to Oracle Database 10g, ... alike, is taken for granted.  Basic . In Oracle SQL, a basic expression is really only a string, a value, a column, or perhaps a sequence reference within a SELECT statement list....

Ngày tải lên: 24/12/2013, 12:17

... to do with actually “doing things” to XML structures, with Oracle SQL commands. We want to know the “what” and not the “how.” In other words, what can we do with XML documents in Oracle SQL, not ... functions in detail. 17.2.1.2.1 The SQL/ XML Standard As already stated, SQL/ XML adheres to SQL/ XML INCITS standards. The following functions are available to Oracle SQL:...

Ngày tải lên: 24/12/2013, 12:17

... use of XML directly from within Oracle SQL. XML is vastly more complex and detailed than pre- sented in this chapter, both with respect to XML itself and to that of Oracle software. This chapter ... called Oracle Par- titioning. Oracle Partitioning working in concert with parallel processing and separate disk spindles or RAID arrays can provide fairly substantial per- formance im...

Ngày tải lên: 24/12/2013, 12:17