You can use the HCL Informix® implementation of the SQL language to develop applications for Informix database servers.
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.
These topics provide an overview about how to use the SQL statements, SPL statements, and syntax segments.
This chapter describes the syntax and semantics of SQL statements that are recognized by Informix®.
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).
These topics describe the data types and expressions that Informix®supports.
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.
Use the interval functions to return an INTERVAL value from arguments that include a number and a character-string representing time units and separators in INTERVAL qualifiers. These functions are useful in CREATE TABLE, CREATE INDEX, and ALTER FRAGMENT statements that define or modify range-interval distributed storage strategies for indexes and tables.
BSON processing functions manipulate BSON data. Some SQL statements require function expressions that call these built-in functions.
From sessions connected to Informix® databases that support explicit transaction logging, you can register or unregister DataBlade® modules by issuing SQL statements that call the built-in SYSBldPrepare( ) function. Another built-in function, SYSBldRelease( ), returns the version string of the SYSBldPrepare( ) function in the local database.
The Data Studio Administration Edition can use the EXPLAIN_SQL routine to obtain a query plan in XML format, interpret the XML, and render the plan visually.
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.
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.