... with SQL What’s new in OracleSQL and PL/ SQL? OracleSQL and PL/ SQL are evolving languages that constitute the backbone of applications written for the Oracle environment Every version of the Oracle ... ideal for writing large, complex programs that must interact with an Oracle database The difference between SQL and PL/ SQLSQL and PL/ SQL are completely different languages SQL is a limited language ... The Scoop on SQL and PL/ SQL As a database application developer, you interact with the Oracle DBMS by using the programming languages Structured Query Language (SQL, Chapter 1: PL/ SQL and Your...
... The Scoop on SQL and PL/ SQL 16 The purpose of SQL and PL/ SQL 17 The difference between SQL and PL/ SQL 18 What’s new in OracleSQL and PL/ SQL? 18 What Is PL/ SQL Good For? ... Oracle PL/ SQL ® FOR DUMmIES ‰ by Michael Rosenblum and Dr Paul Dorsey Oracle PL/ SQL ® FOR DUMmIES ‰ by Michael Rosenblum and Dr Paul Dorsey Oracle PL/ SQL For Dummies Published ... Finding out about Oracle ᮣ Using SQL and PL/ SQL ᮣ Discovering what PL/ SQL is good for P L /SQL is an extension to the industry-standard SQL language Oracle Corporation developed PL/ SQL and released...
... The Scoop on SQL and PL/ SQL 16 The purpose of SQL and PL/ SQL 17 The difference between SQL and PL/ SQL 18 What’s new in OracleSQL and PL/ SQL? 18 What Is PL/ SQL Good For? ... with SQL What’s new in OracleSQL and PL/ SQL? OracleSQL and PL/ SQL are evolving languages that constitute the backbone of applications written for the Oracle environment Every version of the Oracle ... Finding out about Oracle ᮣ Using SQL and PL/ SQL ᮣ Discovering what PL/ SQL is good for P L /SQL is an extension to the industry-standard SQL language Oracle Corporation developed PL/ SQL and released...
... The Scoop on SQL and PL/ SQL 16 The purpose of SQL and PL/ SQL 17 The difference between SQL and PL/ SQL 18 What’s new in OracleSQL and PL/ SQL? 18 What Is PL/ SQL Good For? ... Oracle PL/ SQL ® FOR DUMmIES ‰ by Michael Rosenblum and Dr Paul Dorsey Oracle PL/ SQL ® FOR DUMmIES ‰ by Michael Rosenblum and Dr Paul Dorsey Oracle PL/ SQL For Dummies Published ... with SQL What’s new in OracleSQL and PL/ SQL? OracleSQL and PL/ SQL are evolving languages that constitute the backbone of applications written for the Oracle environment Every version of the Oracle...
... Hello,World! PL/ SQL procedure successfully completed SQL> Passing parameters to procedures You could even go a step farther Like any other programming language, PL/ SQL allows you to pass parameters ... modified string: SQL> begin p_helloTo(‘Everybody’); end; / Hello, Everybody! PL/ SQL procedure successfully completed SQL> _ Examining the Sample Data The history of sample data sets in Oracle databases ... Groundwork: PL/ SQL Fundamentals In This Chapter ᮣ Using PL/ SQL as a programming language ᮣ Understanding lexical program units ᮣ Benefiting from reusable PL/ SQL code ᮣ Discovering PL/ SQL extras P L/SQL...
... number of parameters, names of parameters, order of parameters, or the datatype family of the parameters This section shows some examples of each type Number of parameters The following example shows ... shown here: SQL> begin for main_c in reverse 3 loop DBMS_OUTPUT.put_line(main_c); end loop; end; / PL/ SQL procedure successfully completed SQL> 103 104 Part II: Getting Started with PL/ SQL The upper ... ORA-06550: line 19, column 9: PLS-00307: too many declarations of ‘F_GETAREA_NR’ match this call ORA-06550: line 18, column 4: PL/ SQL: Statement ignored Recursion Oracle PL/ SQL supports the coding...
... updates and shortcuts ᮣ Using PL/ SQL functions in SQL T he main reason to use PL/ SQL as a programming language is that it works really well with SQL PL/ SQL works better with SQL than any other programming ... local PL/ SQL block and define the cursor to exist only within that scope Chapter 6: PL/ SQL and SQL Working Together Listing 6-9 is an example of how you define a cursor in an anonymous PL/ SQL ... this information is one of the main reasons for using PL/ SQL ߜ How cursors allow PL/ SQL to retrieve information from an Oracle database: PL/ SQL s ability to easily and efficiently handle this task...
... Software’s Toad or SQL Navigator, rather than SQL* Plus, to write code Only recently did Oracle release a sophisticated, user-friendly graphical PL/ SQL development tool called OracleSQL Developer ... developers more productive Oracle s SQL* Plus is a no-frills tool with few of the nice features of products that try to support PL/ SQL development Some developers even prefer SQL* Plus for development ... truths ᮣ Discovering SQL development rules ᮣ Examining PL/ SQL development rules ᮣ Checking out stored PL/ SQL program units T his chapter provides some useful coding standards for PL/ SQL developers...
... execution time Some PL/ SQL coding environments (such as SQL Navigator) provide it automatically, but in SQL* Plus, it is set to Off by default In these cases, you need to use the SQL* Plus command SET ... Datatypes SQL> set timing on SQL> declare v_nr number; begin for i in 1000000 loop v_nr:=v_nr+i-i+i*2-i*2; end loop; end; / PL/ SQL procedure successfully completed Elapsed: 00:00:00.35 SQL> declare ... variable2_nr PLS_INTEGER; Beginning with Oracle 10g, these datatypes are interchangeable In earlier versions of Oracle, PLS_INTEGER provided better performance Both of these datatypes exist only in PL/ SQL, ...
... existing Oracle datatypes In addition, it is possible to create entirely new types Some user-defined types are for PL/ SQL only, and some can be used in both PL/ SQL and SQL You can create PL/ SQL datatypes ... TOBeOrnOttOBe PL/ SQL procedure successfully completed SQL> If you have more characters in the source string than in the replacement string, those characters are removed As in the example, because the replacement ... based on parameters Nested tables are more flexible than arrays and can be used in both SQL and PL/ SQL For example, if you need to get a list of employees that satisfies some number of parameters,...
... by using regular SQL or PL/ SQL For these cases, you can use the powerful feature Native Dynamic SQL (also called dynamic SQL) Native Dynamic SQL allows you to build SQL or PL/ SQL statements dynamically ... Variables in Dynamic PL/ SQL SQL> declare a NUMBER:=2; b NUMBER:=3; v_plsql_tx VARCHAR2(2000); begin v_plsql_tx = ‘BEGIN ‘ || ‘ :1 := :1*:2; ‘ || ‘END;’; 10 execute immediate v_plsql_tx 11 using in ... Listing 13-7: Using an OUT Parameter SQL> declare a NUMBER; b NUMBER:=1; Chapter 13: Dynamic SQL and PL/ SQL c NUMBER:=2; v_plsql_tx VARCHAR2(2000); begin v_plsql_tx = ‘begin ‘ || ‘ :1:=:2+:3; ‘...
... operations: You can use SQL bulk operations to replace or modify whole areas of PL/ SQL code When you need to update millions of rows in the database by using PL/ SQL, traditional PL/ SQL coding techniques ... started programming in PL/ SQL It is not a complete reference There are too many important features in PL/ SQL to discuss in any one book Fortunately, plenty of good PL/ SQL books are available ... system versions 351 352 Part V: Taking PL/ SQL to the Next Level Keeping Up-to-Date with OracleSQL and PL/ SQL are constantly evolving With every release of Oracle, new features are added and older...
... lặp PL/ SQL? Các kiểu vòng lặp có sẵn PL/ SQl là: • Lệnh loop-exit • Lệnh while-loop • Lệnh for-loop Phân biệt trỏ (cursor) ngầm trỏ tường minh? Cursor ngầm đòa không đặt tên lệnh SQL xử lý Oracle ... trỏ tường minh? Cursor ngầm đòa không đặt tên lệnh SQL xử lý Oracle và/hay chế thực thi PL/ SQL Mọi lệnh SQL thực cursor ngầm, bao gồm lệnh update, insert, delete lệnh select không thực cursors ... cursor tường minh, developer có toàn quyền điều khiển thực lệnh DECLARE CURSOR employee_cursor IS SELECT * FROM employee; ...
... - SQL PL/ SQL Hình vẽ Câu lệnh SQL* Plus Khác biệt lệnh SQL SQL*Plus SQL* Plus SQL Là ngôn ngữ để giao tiếp với Oracle Server việc truy xuất liệu Câu lệnh dựa ký tự chuẩn ASCII Nhận dạng lệnh SQL ... Quyển sách upload tại: hutonline.net Oracle - SQL PL/ SQL Chương CÁC HÀM SQL 4.1.TỔNG QUAN VỀ HÀM SQL 4.1.1 Cấu trúc hàm SQL Hàm SQL đặc điểm làm tăng khả sử dụng câu lệnh SQL Hàm SQL nhận nhiều ... Quyển sách upload tại: hutonline.net SQL PL/ SQL Cơ Quyển sách upload tại: hutonline.net Oracle - SQL PL/ SQL MỤC LỤC MỤC LỤC .1 CHƯƠNG GIỚI THIỆU CHUNG .5 1.1 NGÔN NGỮ SQL 1.1.1 Lịch sử...
... 102 .103 103 103 Trang Quyển sách upload tại: hutonline.net Oracle - SQL PL/ SQL Chương GIỚI THIỆU CHUNG 1.1.NGÔN NGỮ SQL 1.1.1 Lịch sử phát triển ngôn ngữ SQL Mô hình sở liệu (CSDL) quan hệ - ... 1979, tập đoàn Oracle giới thiệu thương phẩm SQLSQL cài đặt hệ quản trị CSDL DB2 IBM SQL/ DS Ngày nay, SQL sử dụng rộng rãi đuợc xem ngôn ngữ chuẩn để truy cập CSDL quan hệ 1.1.2 Chuẩn SQL Năm 1989, ... Quyển sách upload tại: hutonline.net Oracle - SQL PL/ SQL 13.1.4 Database Trigger Edditor 13.2 CÁC HÀM, THỦ TỤC 13.2.1 Tạo hàm,...
... arise in your application The following sections look at how you define, raise, and handle exceptions in PL/ SQL Previous: 7.7 Tips for PL/ SQL Loops 7.7 Tips for PL/ SQL Loops Oracle PL/ SQL Programming, ... different PL/ SQL programs even between client and server PL/ SQL programs Prior to PL/ SQL Release 2.3, you would have had to fetch all data from the cursor, store it in PL/ SQL variables (perhaps a PL/ SQL ... Previous: 7.5 The WHILE Loop 7.5 The WHILE Loop Oracle PL/ SQL Programming, 2nd Edition Book Index Next: 7.7 Tips for PL/ SQL Loops 7.7 Tips for PL/ SQL Loops The Oracle Library Navigation Copyright (c)...
... through SQL cursor attributes The SQL cursor has the same four attributes as an explicit cursor: SQL% FOUND SQL% NOTFOUND SQL% ROWCOUNT SQL% ISOPEN 6.9.6 Differences Between Implicit and Explicit ... section of the PL/ SQL block Previous: 6.8 Closing Cursors 6.8 Closing Cursors Oracle PL/ SQL Programming, 2nd Edition Book Index Next: 6.10 Cursor Parameters 6.10 Cursor Parameters The Oracle Library ... Previous: 6.3 Implicit and Explicit Cursors 6.3 Implicit and Explicit Cursors Oracle PL/ SQL Programming, 2nd Edition Book Index Next: 6.5 Opening Cursors 6.5 Opening Cursors The Oracle Library...
... to the explicit cursor Previous: 6.2 Cursors in PL/ SQL 6.2 Cursors in PL/ SQLOracle PL/ SQL Programming, 2nd Edition Book Index Next: 6.4 Declaring Cursors 6.4 Declaring Cursors The Oracle Library ... Statements 5.2 Sequential Control Statements Oracle PL/ SQL Programming, 2nd Edition Book Index Next: 6.2 Cursors in PL/ SQL 6.2 Cursors in PL/ SQL The Oracle Library Navigation Copyright (c) 2000 ... constant in an inappropriate manner PL/ SQL table TYPE In PL/ SQL Version you can create PL/ SQL tables which are similar to one-dimensional arrays In order to create a PL/ SQL table, you must first execute...