提交 0c6a8026 authored 作者: Noel Grandin's avatar Noel Grandin

Support OFFSET without LIMIT in SELECT

上级 00693b37
......@@ -7,7 +7,7 @@ SELECT [ TOP term ] [ DISTINCT | ALL ] selectExpression [,...]
FROM tableExpression [,...] [ WHERE expression ]
[ GROUP BY expression [,...] ] [ HAVING expression ]
[ { UNION [ ALL ] | MINUS | EXCEPT | INTERSECT } select ] [ ORDER BY order [,...] ]
[ LIMIT expression [ OFFSET expression ] [ SAMPLE_SIZE rowCountInt ] ]
[ [ LIMIT expression ] [ OFFSET expression ] [ SAMPLE_SIZE rowCountInt ] ]
[ FOR UPDATE ]
","
Selects data from a table or multiple tables.
......
......@@ -21,6 +21,8 @@ Change Log
<h2>Next Version (unreleased)</h2>
<ul>
<li>Support OFFSET without LIMIT in SELECT
</li>
<li>Improve error message for METHOD_NOT_FOUND_1/90087
</li>
<li>CLOB and BLOB objects of removed rows were sometimes kept in the database file.
......
......@@ -1774,7 +1774,7 @@ public class Parser {
if (readIf("OFFSET")) {
command.setOffset(readExpression().optimize(session));
if (!readIf("ROW")) {
read("ROWS");
readIf("ROWS");
}
}
if (readIf("FETCH")) {
......
......@@ -6203,6 +6203,12 @@ SELECT * FROM TEST UNION ALL SELECT * FROM TEST ORDER BY ID LIMIT 2+0 OFFSET 1+0
> 2 World
> rows (ordered): 2
SELECT * FROM TEST ORDER BY ID OFFSET 4;
> ID NAME
> -- ---------
> 5 resources
> rows (ordered): 1
SELECT ID FROM TEST GROUP BY ID UNION ALL SELECT ID FROM TEST GROUP BY ID;
> ID
> --
......
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