Package org.queryman.builder.command.from

Interface FromTablesampleStep

All Superinterfaces:

AstVisitor, From, FromFinalStep

All Known Subinterfaces:

FromFirstStep

All Known Implementing Classes:

FromImpl

public interface FromTablesampleStep
extends FromFinalStep

TABLESAMPLE indicates a method and optional length of argument is used to retrieve subset rows of table. The sample precedes the any filter of query such is WHERE. PostgreSQL provides two sampling methods:

• BERNOULLI
• SYSTEM

Method Summary

Modifier and Type	Method	Description
FromRepeatableStep	tablesample(java.lang.String method, java.lang.String... arguments)	Set sampling method.
FromRepeatableStep	tablesample(java.lang.String method, Expression... arguments)	Set sampling method.

Methods inherited from interface org.queryman.builder.ast.AstVisitor

assemble

Method Detail

tablesample

FromRepeatableStep tablesample(java.lang.String method,
                               java.lang.String... arguments)

Set sampling method.

Parameters:

method - is a method name.

arguments - are arguments.

See Also:

tablesample(String, Expression...)

tablesample

FromRepeatableStep tablesample(java.lang.String method,
                               Expression... arguments)

Set sampling method.

Parameters:

method - is a method name.

arguments - are arguments.