programmer apos s guide and instruction set

... inv.item_name); sql_expression This is any valid SQL expression. For more information, see Oracle8i SQL Reference. subquery This is a SELECT statement that provides a set of rows for processing. Its syntax ... directory, see the Oracle installation or user’s guide for your system. Here is a list of the files and their locations in this guide: You run some samples interactively from SQL*Plus, others from ... programs. The second script loads (or reloads) the database tables. To run the scripts, invoke SQL*Plus, then issue the following commands: SQL> START exampbld SQL> START examplod Sample

Ngày tải lên: 07/08/2014, 11:22

... database,the SQL language, and basic programming constructs such asIF-THEN comparisons,loops, and procedures and functions How This Book Is Organized The PL/SQL User's Guide and Reference contains: ... "Performing SQL Operations from PL/SQL" Shows how PL/SQL supports the SQL commands, functions, and operators formanipulating Oracle data Also shows how to process queries and transactions.Chapter ... Rights Subprograms 8-18 Using Views and Database Triggers with Invoker's Rights Subprograms 8-18 Using Database Links with Invoker's Rights Subprograms 8-18 Using Object Types with Invoker's Rights

Ngày tải lên: 08/08/2014, 20:21

... Expressions PL/SQL lets you compare variables and constants in both SQL and procedural statements These comparisons, called Boolean expressions, consist of simple or complex Trang 16expressions separated ... compares its first argument to one or more search expressions,which are paired with result expressions Any search or result expression can be null If a search is successful, the corresponding result ... and aids understanding Generally, you usecomments to describe the purpose and use of each code segment PL/SQL supportstwo comment styles: single-line and multi-line Single-Line Comments Single-line

Ngày tải lên: 08/08/2014, 20:21

... NLS_COMP or NLS_SORT initialization parameters within a session might cause methods such as NEXT and PRIOR to raise exceptions. If you need to change these settings during the session, make sure ... Collections and Records Knowledge is that area of ignorance that we arrange and classify. —Ambrose Bierce Many programming techniques use collection types such as arrays, bags, lists, nested tables, sets, ... elements using arbitrary numbers and strings for subscript values. (They are similar to hash tables in other programming languages.) What Is a Collection? 5-2 PL/SQL User's Guide and Reference

Ngày tải lên: 08/08/2014, 20:21

... REF CURSORs with Cursor Subqueries You can use cursor subqueries, also know as cursor expressions, to pass sets of rows as parameters to functions... Transaction Processing in PL/SQL This section ... ' || person.last_name || ', salary = ' || person.salary); Using Cursor Attributes 6-16 PL/SQL User's Guide and Reference END LOOP; END; / Example 6–2 Passing Parameters to ... the results into a smaller set, do this scanning or filtering in the original query instead. You can add more WHERE clauses in simple cases, or use set operators such as INTERSECT and MINUS if

Ngày tải lên: 08/08/2014, 20:21

... orDELETEstatement, the functioncannot execute SQL transaction control statements (such asCOMMIT), sessioncontrol statements (such asSET ROLE), or system control statements (such as ALTER SYSTEM) Also, ... because itdeclares types, exceptions, and variables, but no subprograms or cursors Suchpackages let you define global variables—usable by stored procedures and functionsand triggers—that persist ... is a schema object that groups logically related PL/SQL types, variables, and subprograms Packages usually have two parts, a specification and a body; sometimes the body is unnecessary The specification

Ngày tải lên: 08/08/2014, 20:21

... value is assigned to a PL/SQL variable or a host variable by a SELECT or FETCH statement. Bulk SQL uses PL/SQL collections, such as varrays or nested tables, to pass large amounts of data back and ... OUT. Guidelines for Avoiding PL/SQL Performance Problems 11-4 PL/SQL User's Guide and Reference Make Loops as Efficient as Possible Because PL/SQL applications are often built around loops, ... regular PL/SQL. If you use PL/SQL string functions to search for regular expressions, consider using the built-in regular expression functions, such as REGEXP_SUBSTR. Reorder Conditional Tests to Put

Ngày tải lên: 08/08/2014, 20:21

... elements are combined to formPL/SQL statements It also provides usage notes and short examples This chapter contains these topics: Trang 13Assignment StatementAssignment Statement An assignment statement ... statement chooses from a sequence of conditions, and executes acorresponding statement TheCASE statement evaluates a single expression andcompares it against several potential values, or evaluates multiple ... choose among several values to assign to avariable, you can code an assignment statement using aCASE expression instead.You can includeCASE expressions inside SQL queries, for example instead of

Ngày tải lên: 08/08/2014, 20:21

... PL/SQLevaluates the parenthesized expression first, then uses the result in the largerexpression When parenthesized expressions are nested, PL/SQL evaluates theinnermost expression first and ... exits both loops END LOOP inner; END LOOP outer; Related Topics Expressions,LOOP Statements Trang 13( boolean_expression character_expression date_expression numeric_expression ) expression AND ... differentINTO lists on separate fetches with the same cursor or cursorvariable Each fetch retrieves another row and assigns values to the target variables If youFETCH past the last row in the result set,

Ngày tải lên: 08/08/2014, 20:21

... use The body fully defines cursors and subprograms, and so implementsthe spec Only subprograms and cursors have an underlying implementation If a spec declaresonly types, constants, variables, ... Examples This example asserts that the functionBALANCE writes no database state (WNDS) andreads no package state (RNPS) That is, it does not issue any DDL or DML statements,and does not refer ... block or subprogram.Most packages have a spec and a body The spec is the interface to your applications; itdeclares the types, variables, constants, exceptions, cursors, and subprograms available

Ngày tải lên: 08/08/2014, 20:21

... that operations on SFR byte address 208 or bit addresses 209-215 (i.e., the PSW or bits in the PSW) will also affect flag settings Notes on instruction set and addressing modes: Rn Register R7-R0 ... ADDRESSABLE SU00570 Figure SFR Memory Map 1997 Sep 18 Philips Semiconductors 80C51 family programmer s guide and instruction set 80C51 Family Those SFRs that have their bits assigned for various ... 10 Philips Semiconductors 80C51 family programmer s guide and instruction set 80C51 Family SCON: SERIAL PORT CONTROL REGISTER BIT ADDRESSABLE SM0 SM1 SM2 REN TB8 RB8 TI RI SM0 SCON.7 Serial Port...

Ngày tải lên: 20/01/2014, 03:20

... operations on SFR byte address 208 or bit addresses 209–215 (i.e., the PSW or bits in the PSW) will also affect flag settings Note on instruction set and addressing modes : Rn – Register R7–R0 ... mode SCON : Serial Port Control Register (Bit Addressable) SM0 SM0 SM1 SM2 SCON.7 SCON.6 SCON.5 REN TB8 RB8 SCON.4 SCON.3 SCON.2 TI SCON.1 RI SCON.0 SM1 SM2 REN TN8 RB8 TI RI Serial Port mode specifier ... 80C51 and 80C52 000X 0000 83C154 and 83C154D 0000 0000 –*IOCON PSW : Program Status Word (Bit Addressable) CY CY AC F0 RS1 RS0 OV F1 P PSW.7 PSW.6 PSW.5 PSW.4 PSW.3 PSW.2 PSW.1 PSW.0 AC F0 RS1 RS0...

Ngày tải lên: 10/08/2016, 21:37

... that COSY can also push rays through maps repetitively and display phase space plots This uses different methods and is discussed in section 4.4 beginning on page 50 The following command sets a ... symplectic scaling it is possible to save maps with a certain setting of field strengths and lengths and later re–use them for different settings of lengths or strengths This is particularly useful ... procedure ESET (see index) 42 COMPUTING SYSTEMS WITH COSY 3.3.9 Glass Lenses and Mirrors COSY INFINITY also allows the computation of higher order effects of general glass optical systems At the present...

Ngày tải lên: 12/01/2014, 22:17

... Page and Report Titles and Dimensions Setting the Top and Bottom Titles and Headers and Footers Displaying System-Maintained Values in Titles Listing, Suppressing, and Restoring ... SQL*Plus Commands" Provides information on obsolete SQL*Plus commands Appendix D, "Commands Not Supported in iSQL*Plus" Lists SQL*Plus commands that are not supported in iSQL*Plus Related Documents ... in SQL*Plus and iSQL*Plus 10.1 SQL*Plus Release 10.1 is a superset of SQL*Plus 9.2 This section describes new features introduced in SQL*Plus Release 10.1 Change in DESCRIBE Behavior Previously,...

Ngày tải lên: 17/01/2014, 06:20

... process PL/SQL blocks and subprograms as well as single SQL statements The Oracle server passes the blocks and subprograms to its local PL/SQL engine Anonymous Blocks Anonymous PL/SQL blocks can ... the discussion were left out lower case Lower case is used for names of constants, variables, cursors, exceptions, subprograms, and packages UPPER CASE Upper case is used for keywords, names of ... PL/SQL programs Chapter 2, "Fundamentals" This chapter focuses on the small-scale aspects of PL/SQL It discusses lexical units, scalar datatypes, user-defined subtypes, data conversion, expressions,...

Ngày tải lên: 17/01/2014, 09:20

... and database names, net service names, and connect identifiers, as well as user-supplied database objects and structures, column names, packages and classes, usernames and roles, program units, ... parameters, privileges, datatypes, RMAN keywords, SQL keywords, SQL*Plus or utility commands, packages and methods, as well as system-supplied column names, database objects and structures, usernames, ... procedure ■ CASE statements and expressions CASE statements and expressions are a shorthand way of representing IF/THEN choices with multiple alternatives See Also: ■ ■ "Using the CASE Statement"...

Ngày tải lên: 24/01/2014, 08:20

... Commands You can use SQL*Plus commands to manipulate SQL commands and PL/SQL blocks and to format and print query results SQL*Plus treats SQL*Plus commands differently than SQL commands or PL/SQL ... or slash (/) A semicolon (;) will not execute these SQL commands as it does other SQL commands SQL*Plus sends the complete PL/SQL subprogram to Oracle for processing (as it does SQL commands) See ... enter commands in lowercase letters If your system expects lowercase, enter the SQLPLUS command in lowercase $ SQLPLUS Learning SQL*Plus Basics 2-3 Getting Started SQL*Plus displays its version number,...

Ngày tải lên: 24/01/2014, 10:20

... as Java String values Closing the ResultSet and Statement Objects You must explicitly close the ResultSet and Statement objects after you finish using them This applies to all ResultSet and Statement ... Drivers ■ Server-side internal driver It is used for code that runs on the database server and accesses the same session That is, the code runs and accesses data from a single Oracle session Figure ... elements include computer and database names, net service names, and connect identifiers, as well as user-supplied database objects and structures, column names, packages and classes, user names and...

Ngày tải lên: 20/02/2014, 05:21

... identifiers, user-supplied database objects and structures, column names, packages and classes, usernames and roles, program units, and parameter values Enter sqlplus to start SQL*Plus UPPERCASE monospace ... SQL keywords, SQL*Plus or utility commands, packages and methods, as well as system-supplied column names, database objects and structures, usernames, and roles You can specify this clause only ... as lexical units, scalar datatypes, user-defined subtypes, data conversion, expressions, assignments, block structure, declarations, and scope Chapter 3, "PL/SQL Datatypes" Discusses PL/SQL's...

Ngày tải lên: 30/03/2014, 22:20

... process PL/SQL blocks and subprograms as well as single SQL statements The Oracle server passes the blocks and subprograms to its local PL/SQL engine Anonymous Blocks Anonymous PL/SQL blocks can ... programs Chapter 2, "Fundamentals" This chapter focuses on the small-scale aspects of PL/SQL It discusses lexical units, scalar datatypes, user-defined subtypes, data conversion, expressions, assignments, ... which can span multiple lines An ellipsis shows that statements or clauses irrelevant to the discussion were left out lower case Lower case is used for names of constants, variables, cursors, exceptions,...

Ngày tải lên: 07/08/2014, 11:22