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Sybase(R) Adaptive Server(TM) EnterpriseReference Manual [Table of Contents] Chapter 1: Transact-SQL Commands

Reference Manual All Volumes (Online Only)

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About This Book

The Adaptive Server Reference Manual is a guide to Sybase(R) Adaptive Server(TM) and the Transact-SQL(R) language. This book includes information about Transact-SQL commands, built-in functions, procedures, datatypes, the system tables, expressions and identifiers, SQLSTATE errors, and reserved words.

Audience

The Adaptive Server Reference Manual is intended as a reference tool for Transact-SQL users of all levels. It provides basic syntax and usage information for every command, function, system procedure, catalog stored procedure, and extended stored procedure.

How to Use This Book

This manual consists of the following chapters:

Related Documents

The following documents comprise the Sybase Adaptive Server Enterprise documentation:

Other Sources of Information

Use the SyBooks(TM) and SyBooks-on-the-Web online resources to learn more about your product:

Conventions Used in This Manual

Formatting SQL Statements

SQL is a free-form language: there are no rules about the number of words you can put on a line or where you must break a line. However, for readability, all examples and syntax statements in this manual are formatted so that each clause of a statement begins on a new line. Clauses that have more than one part extend to additional lines, which are indented.

SQL Syntax Conventions

The conventions for syntax statements in this manual are as follows:

Table 1: Syntax statement conventions

Key

Definition

command

Command names, command option names, utility names, utility flags, and other keywords are in bold Courier in syntax statements and in bold Helvetica in paragraph text.

variable

Variables, or words that stand for values that you fill in, are in italics.

{ }

Curly braces indicate that you choose at least one of the enclosed options. Do not include braces in your option.

[ ]

Brackets mean choosing one or more of the enclosed options is optional. Do not include brackets in your option.

( )

Parentheses are to be typed as part of the command.

|

The vertical bar means you may select only one of the options shown.

,

The comma means you may choose as many of the options shown as you like, separating your choices with commas to be typed as part of the command.

Case

In this manual, most of the examples are in lowercase. However, you can disregard case when typing Transact-SQL keywords. For example, SELECT, Select, and select are the same.

Note that Adaptive Server's sensitivity to the case of database objects, such as table names, depends on the sort order installed on Adaptive Server. You can change case sensitivity for single-byte character sets by reconfiguring the Adaptive Server sort order. See "Changing the Default Character Set, Sort Order, or Language" in Chapter 13, "Configuring Character Sets, Sort Orders, and Languages" in the System Administration Guide for more information.

Obligatory Options {You Must Choose At Least One}

Optional Options [You Don't Have to Choose Any]

Ellipsis: Do It Again (and Again)...

An ellipsis (...) means that you can repeat the last unit as many times as you like. In this syntax statement, buy is a required keyword:

buy thing = price [cash | check | credit] 
[, thing = price [cash | check | credit] ]...

You must buy at least one thing and give its price. You may choose a method of payment: one of the items enclosed in square brackets. You may also choose to buy additional things: as many of them as you like. For each thing you buy, give its name, its price, and (optionally) a method of payment.

Expressions

Adaptive Server syntax statements use several different types of expressions.

Table 2: Types of expressions used in syntax statements 

Usage

Definition

expression

Can include constants, literals, functions, column identifiers, variables or parameters

logical expression

An expression that returns TRUE, FALSE or UNKNOWN

constant expression

An expression that always returns the same value, such as "5+3" or "ABCDE"

float_expr

Any floating-point expression or expression that implicitly converts to a floating value

integer_expr

Any integer expression, or an expression that implicitly converts to an integer value

numeric_expr

Any numeric expression that returns a single value

char_expr

Any expression that returns a single character-type value

binary_expression

An expression that returns a single binary or varbinary value

If You Need Help

Each Sybase installation that has purchased a support contract has one or more designated people who are authorized to contact Sybase Technical Support. If you cannot resolve a problem using the manuals or online help, please have the designated person contact Sybase Technical Support or the Sybase subsidiary in your area.


Sybase(R) Adaptive Server(TM) EnterpriseReference Manual [Table of Contents] Chapter 1: Transact-SQL Commands