Tài liệu Oracle SQL Jumpstart with Examples- P2 ppt

... New Features of Oracle SQL In this chapter:  What are the new features of Oracle SQL in Oracle Database 10 g ?  What were the new features of Oracle SQL in Oracle Database 9 ... 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 /SQL....

Ngày tải lên: 24/12/2013, 12:17

... (starting with Sheryl Crow and ending with James Taylor) appear in Figure 10.17 with a blank space in the SONG_ID and GUESTARTIST_ID. The query could not match any row in the GUESTAPPEARANCE table with ... rows.  ARTIST has 15 rows.  SONG has 118 rows.  SONG_GUESTARTIST has 5 rows. Let’s begin with an Oracle format query, the result of which is shown in Figure 10.25. This query...

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 ... stored in tables in an Oracle schema. A schema is the Oracle user that owns the tables. A user and a schema are the same thing as far as Oracle Database is concerned. An Oracle rela...

Ngày tải lên: 24/12/2013, 12:17

... PL /SQL a Programming Language? PL /SQL is a programming language because, unlike SQL, it allows depen- dencies to exist between multiple SQL commands, within the same block of code. In Oracle SQL, ... 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 Dynam...

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 ... Contents 2 New Features of Oracle SQL 39 2.1 New Features in Oracle Database 10g 39 2.1.1 Oracle SQL Improvements in Oracle Database 10g 39 2.1.2 PL /SQL Improv...

Ngày tải lên: 24/12/2013, 12:17

... and physical struc- ture of Oracle Database plus new features available in both Oracle Database 10g and Oracle Database 9i. Now it’s time to begin looking into Oracle SQL itself. The next chapter ... physical standby. 3.5.5 Clustering and Oracle RAC Clustering was previously called Oracle Parallel Server and is now called Oracle Real Application Clusters (RAC). Oracle RAC al...

Ngày tải lên: 24/12/2013, 12:17

... session and can only be used with SQL* Plus tools (i.e., SQL* Plus, SQL* Plus Worksheet, and iSQL*Plus). Look at the entire list by running the following statement in SQL* Plus Worksheet: SHOW ALL ... covers more detail using SQL* Plus, particularly with respect to formatting. Further SQL* Plus output formatting detail is essential to proper use and understanding of Oracle SQL...

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 ... hostname as appropriate.  The file called ORACLE_ APACHE.CONF in the $ORACLE_ HOME/Apache/Apache/conf directory must include the file ISQLPLUS.CONF in the ORACLE_ HOME/sqlplus/admin direc...

Ngày tải lên: 24/12/2013, 12:17

... right and from top to bottom. The SQL parser will not understand what to do with an attempt to pass a column alias from bottom to top and will produce a syntax (SQL parse) error. A subquery is parsed ... speaking, as listed previously in this chapter. Note: In Oracle Database 8i, use of subqueries was limited. In Oracle Data- base 9i and Oracle Database 10g, restrictions are almost...

Ngày tải lên: 24/12/2013, 12:17

... ARTIST_COUNTRY= (SELECT COUNTRY FROM ARTIST A WHERE A.NAME = T.ARTIST_NAME); SQL* Plus Worksheet will reply, “13 rows updated.” Note: Updated rows must comply with any constraints defined for a table. If one row does ... final section in this chapter discusses the MERGE command, a new feature of Oracle Database 9i and much improved in Oracle Database 10g. Figure 15.15 Three Rows Were De...

Ngày tải lên: 24/12/2013, 12:17