pl sql expressions and comparisons

... Advantages of PL/ SQL Figure 1–1 PL/ SQL Boosts Performance SQL SQL Application Other DBMSs SQL SQL Application Application SQL IF THEN SQL ELSE SQL END IF; SQL Oracle Database with PL/ SQL RPC Oracle ... Started with PL/ SQL Chapter 1, "Overview of PL/ SQL" Summarizes the main features of PL/ SQL and their advantages Introduces the basic concepts behind PL/ SQL and the general appearance of PL/ SQL programs ... how to detect and handle PL/ SQL errors using exceptions and handlers Chapter 11, "Tuning PL/ SQL Applications for Performance" Shows how to improve performance for PL/ SQL- based applications Chapter...

Ngày tải lên: 24/01/2014, 08:20

... Advantages of PL/ SQL Figure 1–1 PL/ SQL Boosts Performance SQL SQL Application Other DBMSs SQL SQL Application Application SQL IF THEN SQL ELSE SQL END IF; SQL Oracle Database with PL/ SQL RPC Oracle ... Oracle Database PL/ SQL User’s Guide and Reference PL/ SQL Architecture Figure 1–3 PL/ SQL Engine PL/ SQL Engine procedural PL/ SQL Block PL/ SQL Block Procedural Statement Executor SQL SQL Statement ... Database PL/ SQL User’s Guide and Reference Understanding the Main Features of PL/ SQL Writing Reusable PL/ SQL Code PL/ SQL lets you break an application down into manageable, well-defined modules PL/ SQL...

Ngày tải lên: 30/03/2014, 22:20

... Examples Code examples illustrate SQL, PL/ SQL, SQL* Plus, or other command-line statements They are displayed in a monospace (fixed-width) font and separated from normal text as shown in this example: ... column names, packages and classes, user names and roles, program units, and parameter values Enter sqlplus to open SQL* Plus You can back up the database by using the BACKUP command Query the TABLE_NAME ... datatypes, RMAN keywords, SQL keywords, SQL* Plus or utility commands, packages and methods, as well as system-supplied column names, database objects and structures, user names, and roles You can specify...

Ngày tải lên: 24/10/2013, 17:15

... Oracle SQL: DML and DDL Oracle SQL and SQL* Plus: Advanced SELECT Statements Oracle SQL and SQL* Plus: SQL* Plus and Reporting Oracle SQL Specifics: Retrieving and Formatting Data Oracle SQL Specifics: ... With PL/ SQL, you can use SQL statements to finesse Oracle data, and PL/ SQL control statements to process the data Introduction to Oracle9i: PL/ SQL I-3 PL/ SQL Environment PL/ SQL engine PL/ SQL block ... Creating and Managing Database Objects PL/ SQL: Basics PL/ SQL: Procedures, Functions, and Packages PL/ SQL: Database Programming SQL for End Users: Part SQL for End Users: Part Advanced PL/ SQL: Implementation...

Ngày tải lên: 27/10/2013, 22:15

... Using SQL* Plus to Create Reports and Manage PL/ SQL Code CĆ7 CĆ8 Introduction to Oracle: SQL and PL/ SQL Using Procedure Builder Comparison of SQL and SQL* Plus Commands This table compares SQL and SQL* Plus ... the SQL* Plus environment, and display column definitions Using SQL* Plus to Create Reports and Manage PL/ SQL Code CĆ5 Entering Commands in SQL* Plus CĆ6 Introduction to Oracle: SQL and PL/ SQL Using ... Manipulating PL/ SQL Using SQL* Plus You can use SQL* Plus to create, debug, and execute PL/ SQL blocks D Create and modify anonymous blocks and program units with SQL* Plus and the online editor D Execute SQL* Plus...

Ngày tải lên: 17/01/2014, 09:20

... not warrant that this document is error free SQL* Plus, PL/ SQL, Procedure Builder, Developer/2000, Oracle7 Server, Oracle Server, Discoverer/2000, and Designer/2000 are trademarks or registered ... Nagarathnam Sandra Schrick Ulrike Schwinn Rosemarie Truman Jenny Tsai Laura Van Deusen Use, duplication or disclosure by the Government is subject to restrictions for commercial computer software and ... Department of Defense, then it is delivered with Restricted Rights and the folĆ lowing legend is applicable: Technical Contributors and Reviewers Restricted Rights Legend Christian Bauwens Debra...

Ngày tải lên: 17/01/2014, 09:20

... not warrant that this document is error free SQL* Plus, PL/ SQL, Procedure Builder, Developer/2000, Oracle7 Server, Oracle Server, Discoverer/2000, and Designer/2000 are trademarks or registered ... Nagarathnam Sandra Schrick Ulrike Schwinn Rosemarie Truman Jenny Tsai Laura Van Deusen Use, duplication or disclosure by the Government is subject to restrictions for commercial computer software and ... Department of Defense, then it is delivered with Restricted Rights and the folĆ lowing legend is applicable: Technical Contributors and Reviewers Restricted Rights Legend Christian Bauwens Debra...

Ngày tải lên: 17/01/2014, 09:20

... environments 1-22 PL/ SQL User’s Guide and Reference Advantages of PL/ SQL Tight Integration with SQL The PL/ SQL and SQL languages are tightly integrated PL/ SQL supports all the SQL datatypes and the non-value ... Application Other DBMSs SQL SQL Application Application SQL IF THEN SQL ELSE SQL END IF; SQL RPC Oracle with PL/ SQL Oracle with PL/ SQL and Stored Procedures PL/ SQL also improves performance by ... local PL/ SQL engine must rely on Oracle to process PL/ SQL blocks and subprograms When it contains the PL/ SQL engine, an Oracle server can process PL/ SQL blocks and subprograms as well as single SQL...

Ngày tải lên: 17/01/2014, 09:20

... not warrant that this document is error free SQL* Plus, PL/ SQL, Procedure Builder, Developer/2000, Oracle7 Server, Oracle Server, Discoverer/2000, and Designer/2000 are trademarks or registered ... Nagarathnam Sandra Schrick Ulrike Schwinn Rosemarie Truman Jenny Tsai Laura Van Deusen Use, duplication or disclosure by the Government is subject to restrictions for commercial computer software and ... Department of Defense, then it is delivered with Restricted Rights and the folĆ lowing legend is applicable: Technical Contributors and Reviewers Restricted Rights Legend Christian Bauwens Debra...

Ngày tải lên: 24/01/2014, 10:20

... not warrant that this document is error free SQL* Plus, PL/ SQL, Procedure Builder, Developer/2000, Oracle7 Server, Oracle Server, Discoverer/2000, and Designer/2000 are trademarks or registered ... Nagarathnam Sandra Schrick Ulrike Schwinn Rosemarie Truman Jenny Tsai Laura Van Deusen Use, duplication or disclosure by the Government is subject to restrictions for commercial computer software and ... Department of Defense, then it is delivered with Restricted Rights and the folĆ lowing legend is applicable: Technical Contributors and Reviewers Restricted Rights Legend Christian Bauwens Debra...

Ngày tải lên: 24/01/2014, 10:20

... PL/ SQL Environment PL/ SQL engine PL/ SQL block PL/ SQL block PL/ SQL SQL Procedural Statement Executor SQL Statement Executor Oracle Server Hint Draw attention to the fact that PL/ SQL can ... SQL and SQL* Plus Interaction SQL Statements SQL Statements Buffer Server SQL* Plus SQL* Plus Commands Query Results Hint Give an overview of all the uses of the SQL statements Explain SQL as ... buffer SQL* Plus • An environment • Oracle proprietary • Keywords can be abbreviated • Commands not allow manipulation of values in the database SQL* Plus commands SQL* Plus buffer Hint For SQL commands,...

Ngày tải lên: 24/01/2014, 10:20

... and PL/ SQL Using Procedure Builder SQL, SQL* Plus, and PL/ SQL SQL, SQL* Plus, and PL/ SQL commands are used to access and manipulate data stored in an Oracle database SQL* Plus, SQL, and PL/ SQL Language ... Introduction to Oracle: SQL and PL/ SQL Using Procedure Builder SQL, SQL* Plus, and PL/ SQL continued SQL* Plus Command Categories Category Purpose Environment Affects the general behavior of SQL statements ... Introduction to Oracle: SQL and PL/ SQL Using Procedure Builder SQL, SQL* Plus, and PL/ SQL continued SQL is the industry standard language for relational databases The American National Standards Institute...

Ngày tải lên: 02/07/2014, 00:20

... Application Other DBMSs SQL SQL Application SQL IF THEN SQL ELSE SQL END IF; SQL Oracle8i with PL/ SQL Application RPC Oracle8i with PL/ SQL and Stored Procedures PL/ SQL also improves performance ... cached and shared among users That lowers memory requirements and invocation overhead Overview 1-21 Advantages of PL/ SQL Figure 1–5 PL/ SQL Boosts Performance SQL SQL Application Other DBMSs SQL SQL ... local PL/ SQL engine must rely on Oracle to process PL/ SQL blocks and subprograms When it contains the PL/ SQL engine, an Oracle server can process PL/ SQL blocks and subprograms as well as single SQL...

Ngày tải lên: 07/08/2014, 11:22

... Boolean 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 expressions ... precedence than AND Therefore, the second expression is equivalent to: (NOT valid) AND done 2-44 PL/ SQL User’s Guide and Reference Expressions and Comparisons In the following example, notice that ... equal to low value and less than or equal to high value." For example, the following expression is false: 45 BETWEEN 38 AND 44 2-46 PL/ SQL User’s Guide and Reference Expressions and Comparisons IN...

Ngày tải lên: 07/08/2014, 11:22

... the SQL statements and, in some cases, returns data to the PL/ SQL engine Figure 4–3 Context Switching PL/ SQL Engine Procedural Statement Executor procedural PL/ SQL Block SQL Engine SQL d a t a SQL ... 5-1 SQL Support SQL Support By extending SQL, PL/ SQL offers a unique combination of power and ease of use You can manipulate Oracle data flexibly and safely because PL/ SQL fully supports all SQL ... Within PL/ SQL, to manipulate a local collection, use the operators TABLE and CAST The operands of CAST are a collection declared locally (in a PL/ SQL anonymous block for example) and a SQL collection...

Ngày tải lên: 07/08/2014, 11:22

... VARIABLE return_code NUMBER Both SQL* Plus and PL/ SQL can reference the host variable, and SQL* Plus can display its value However, to reference a host variable in PL/ SQL, you must prefix its name with ... cursor variable */ EXEC SQL CLOSE :generic_cv; } exit(0); } void sql_ error() { /* Handle SQL error here */ } 5-28 PL/ SQL User’s Guide and Reference Using Cursor Variables Example A host variable ... EXEC SQL END DECLARE SECTION; /* Handle Oracle errors */ EXEC SQL WHENEVER SQLERROR DO sql_ error(); /* Connect to Oracle */ EXEC SQL CONNECT :uid; /* Initialize cursor variable */ EXEC SQL ALLOCATE...

Ngày tải lên: 07/08/2014, 11:22

... exception handler into an enclosing block Error Handling 6-17 Handling Raised Exceptions Using SQLCODE and SQLERRM In an exception handler, you can use the built-in functions SQLCODE and SQLERRM ... the constraints WNPS and RNPS if the function calls SQLCODE or SQLERRM Unhandled Exceptions Remember, if it cannot find a handler for a raised exception, PL/ SQL returns an unhandled exception error ... IMMEDIATE and OPEN-FOR-USING dynamic SQL statements s 7-32 SELECT, INSERT, UPDATE, and DELETE data manipulation statements SQL statements parsed using DBMS _SQL. PARSE() PL/ SQL User’s Guide and Reference...

Ngày tải lên: 07/08/2014, 11:22