Openedge Data Management: SQL Reference - Product ...

OpenEdge SQL Elements and Statements in Backus Naur Form
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Table reference
Syntax
table_ref ::=
table_name [ AS ] [ alias [ (column_alias [, ... ] ) ] ]
| (query_expression) [ AS ] alias [ (column_alias [ ,... ] ) ]
| [ ( ] joined_table [ ) ]
Joined table
Syntax
joined_table ::=
{ table_ref CROSS JOIN table_ref
|table_ref [ INNER | LEFT [ OUTER ] ] JOIN
table_ref ON search_condition
}
From clause inner join
Syntax
from_clause_inner_join ::=
{ FROM table_ref CROSS JOIN table_ref
| FROM table_ref [ INNER ] JOIN table_ref
ON search_condition
}
Where clause inner join
Syntax
where_clause_inner_join ::=
FROM table_ref, table_ref WHERE search_condition
From clause outer join
Syntax
from_clause_outer_join ::=
FROM table_ref LEFT OUTER JOIN table_ref
ON search_condition
Where clause outer join
Syntax
where_clause_outer_join ::=
WHERE [ table_name.]column (+) = [ table_name.]column
| WHERE [ table_name.]column = [ table_name.]column (+)