Contents

Title and Copyright Information

Preface

• Intended Audience
• Documentation Accessibility
• Structure
• Related Documents
• Conventions
• ANSI Compliance

1 Writing a Pro*PL/1 Program

• Programming Guidelines
  • Comments
  • Continuation Lines
  • Embedded SQL Syntax
  • Host Variable Names
  • MAXLITERAL Default Value
  • Nulls
  • Operators, Logical
  • Operators, Relational
  • PL/1 Versions
  • Preprocessor
  • Quotation Marks and Apostrophes
  • Scope of Variables
  • SQL Statement Terminator
  • Statement Labels
• Required Declarations and SQL Statements
  • The Declare Section
  • Using the INCLUDE Statement
  • Event and Error Handling
• Host Variables
  • Declaring Host Variables
    • Structures
    • An Example
    • Special Requirements
  • Referencing Host Variables
    • Restrictions
• Indicator Variables
  • Declaring Indicator Variables
  • Referencing Indicator Variables
• Host Arrays
  • Declaring Host Arrays
  • Referencing Host Arrays
• Pointers as Host Variables
• CHARACTER VARYING
  • VARYINGReturning Nulls to a CHARACTER (N)
• Handling Character Data
  • Effects of the MODE Option
• The Oracle Datatypes
  • Internal Datatypes
    • SQL Pseudocolumns and Functions
  • External Datatypes
• Datatype Conversion
• Datatype Equivalencing
  • Host Variable Equivalencing
• Embedding PL/SQL
  • Using Host Variables with PL/SQL
  • Using Indicator Variables with PL/SQL
    • Handling Nulls
    • Handling Truncated Values
  • SQLCHECK
• Connecting to Oracle
  • Automatic Logins
  • Concurrent Logins

2 Error Handling and Diagnostics

• SQLSTATE, the SQLCA, and SQLCODE
  • Declaring SQLSTATE
  • SQLSTATE Values
  • Using SQLSTATE
  • Declaring SQLCODE
• Using the SQLCA
  • Declaring the SQLCA
  • What's in the SQLCA?
  • Key Components of Error Reporting
    • Status Codes
    • Warning Flags
    • Rows-processed Count
    • Parse Error Offset
    • Error Message Text
• Getting the Full Text of Error Messages
• Using the WHENEVER Statement
  • Scope of WHENEVER
    • Helpful Hint
    • Caution
• Using the ORACA
  • Declaring the ORACA
  • Enabling the ORACA
  • What's in the ORACA?

3 Running the Pro*PL/1 Precompiler

• Precompiler Command
• Precompiler Options
  • Default Values
    • Determining Current Values
  • Case Sensitivity
  • Configuration Files
  • Scope of Options
  • DBMS
  • MODE
  • Entering Options
  • Special PL/1 Options
• Doing Conditional Precompilations
• Doing Separate Precompilations
  • Restrictions
• Compiling and Linking

4 Sample Programs

• Sample Programs
• Sample Program 1: Login and Query
• Sample Program 2: Using a Cursor
• Sample Program 3: Fetching in Batches
• Sample Program 4: Datatype Equivalencing
• Sample Program 5: A SQL*Forms User Exit
• Sample Program 6: Dynamic SQL Method 1
• Sample Program 7: Dynamic SQL Method 2
• Sample Program 8: Dynamic SQL Method 3
• Sample Program 9: Calling a Stored procedure

5 Implementing Dynamic SQL Method 4

• Meeting the Special Requirements of Method 4
  • What Makes Method 4 Special?
  • What Information Does Oracle Need?
  • Where Is the Information Stored?
  • How is the Information Obtained?
• The SQLDA
  • Introducing the PL/1 SQLDA
  • Declaring a SQLDA
  • Multiple SQLDAs
  • The SQLDA Variables
    • {SELDSC | BNDDSC}
    • SQLDNUM
    • SQLDFND
    • SQLDSC(N)
    • SQLDV
    • SQLDFMT
    • SQLDVLN
    • SQLDVTYP
    • SQLDI
    • SQLDH_VNAME
    • SQLDH_MAX_VNAMEL
    • SQLDH_CUR_VNAMEL
    • SQLDI_VNAME
    • SQLDI_MAX_VNAMEL
    • SQLDI_CUR_VNAMEL
    • SQLDFCLP
    • SQLDFCRCP
  • Datatypes in the SQLDA
    • Internal and External Datatypes
    • Coercing Datatypes After DESCRIBE
    • Extracting Precision and Scale
    • Datatype Codes
  • Handling NULL/NOT NULL Datatypes
• The Basic Steps
• A Closer Look at Each Step
  • Declare a Host String
  • Set the Size of the Descriptors
  • Declare the SQLDAs
  • Declare the Data Buffers
  • Initialize the Descriptors
  • Get the Query Text into the Host String
  • PREPARE the Query from the Host String
  • DECLARE a Cursor
  • DESCRIBE the Bind Variables
  • VariablesReset Maximum Number of Bind
  • Get Values for Bind Variables
  • OPEN the Cursor
  • DESCRIBE the SelectList
  • Adjust the Select Descriptor Values
  • FETCH A Row from the Active Set
  • Process the Select-List Items
  • CLOSE the Cursor
• Using Host Arrays
• Sample 10: Dynamic SQL Method 4 Program

A Differences from Previous Release

• Topics

B Operating System Dependencies

• Topics

Index