ca.krasnay.sqlbuilder
Interface Dialect

All Known Implementing Classes:

PostgresqlDialect

public interface Dialect

Interface representing a SQL dialect. Dialects can modify SQL queries in database server-specific ways.

Author:

John Krasnay

Method Summary

String	createCountSelect(String sql) Returns a SQL statement that returns the number of rows that would be returned by another select.
String	createPageSelect(String sql, int limit, int offset) Returns a SQL statement that returns a limited number of rows from an inner query.

Method Detail

createCountSelect

String createCountSelect(String sql)

Returns a SQL statement that returns the number of rows that would be returned by another select.

Parameters:

sql - Inner select statement, i.e. the one that returns the rows themselves.

createPageSelect

String createPageSelect(String sql,
                        int limit,
                        int offset)

Returns a SQL statement that returns a limited number of rows from an inner query. Note that the inner select should include an ORDER BY clause that strictly orders the result set; otherwise, some database servers may return pages inconsistently.

Parameters:

sql - Inner query that would return the full result set.

limit - Maximum number of rows to return.

offset - Index into the result set of the first row returned.