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SQL programming
You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
Guide to SQL: Syntax
The Informix® Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the Informix dialect of the SQL language.
Overview of SQL syntax
These topics provide an overview about how to use the SQL statements, SPL statements, and syntax segments.
Categories of SQL Statements
Dynamic Management Statements

SQL programming
You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
- Guide to SQL: Syntax
  The Informix® Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the Informix dialect of the SQL language.
  - Overview of SQL syntax
    These topics provide an overview about how to use the SQL statements, SPL statements, and syntax segments.
    - How to Enter SQL Statements
    - How to Enter SQL Comments
    - Categories of SQL Statements
      - Data Definition Language Statements
        The data definition language (DDL) statements of SQL create, modify, rename, or destroy database objects, and make corresponding changes to rows in the system catalog tables of the database.
      - Data Manipulation Language Statements
      - Data Integrity Statements
      - Cursor Manipulation Statements
      - Dynamic Management Statements
      - Data Access Statements
      - Optimization Statements
      - Routine Definition Statements
      - Auxiliary Statements
      - Client/Server Connection Statements
    - ANSI/ISO Compliance and Extensions
  - SQL statements
    This chapter describes the syntax and semantics of SQL statements that are recognized by Informix®.
  - SPL statements
    These topics describe Stored Procedure Language (SPL) statements, which you use to write SPL routines. You can store these routines in the database as user-defined routines (UDRs).
  - Data types and expressions
    These topics describe the data types and expressions that Informix®supports.
  - Other syntax segments
    These topics describe syntax segments, which are language elements, such as database object names or optimizer directives, that appear as a subdiagram reference in the syntax diagrams of some SQL or SPL statements.
  - Built-In Routines
  - Appendixes
- Guide to SQL: Reference
  The Informix® Guide to SQL: Reference contains the reference information for the system catalog tables, data types, and environment variables of the HCL Informix dialect of the SQL language, as implemented in HCL Informix. These topics also include information about the stores_demo, sales_demo, and superstore_demo databases that are included with HCL Informix.
- Guide to SQL: Tutorial
  The Informix® Guide to SQL: Tutorial shows how to use basic and advanced structured query language (SQL) to access and manipulate the data in your databases. It discusses the data manipulation language (DML) statements as well as triggers and stored procedure language (SPL) routines, which DML statements often use.

Dynamic Management Statements

ALLOCATE COLLECTION
ALLOCATE DESCRIPTOR
ALLOCATE ROW
DEALLOCATE COLLECTION
DEALLOCATE DESCRIPTOR
DEALLOCATE ROW
DESCRIBE
DESCRIBE INPUT
EXECUTE
EXECUTE IMMEDIATE
FREE
GET DESCRIPTOR
INFO
PREPARE
SET DEFERRED_PREPARE
SET DESCRIPTOR