PostgreSQL compatibility: support for EXTRACT(WEEK FROM dateColumn). Thanks to…

PostgreSQL compatibility: support for EXTRACT(WEEK FROM dateColumn). Thanks to Prashant Bhat for the patch!

h2/src/docsrc/html/changelog.html

@@ -18,7 +18,8 @@ Change Log
 <h1>Change Log</h1>
 
 <h2>Next Version (unreleased)</h2>
-<ul><li>-
+<ul><li>PostgreSQL compatibility: support for EXTRACT(WEEK FROM dateColumn).
+    Thanks to Prashant Bhat for the patch!
 </li></ul>
 
 <h2>Version 1.3.169 (2012-09-09)</h2>

h2/src/main/org/h2/expression/Function.java

@@ -129,6 +129,7 @@ public class Function extends Expression implements FunctionCall {
         DATE_PART.put("SQL_TSI_WEEK", Calendar.WEEK_OF_YEAR);
         DATE_PART.put("WW", Calendar.WEEK_OF_YEAR);
         DATE_PART.put("WK", Calendar.WEEK_OF_YEAR);
+        DATE_PART.put("WEEK", Calendar.WEEK_OF_YEAR);
         DATE_PART.put("DAY", Calendar.DAY_OF_MONTH);
         DATE_PART.put("DD", Calendar.DAY_OF_MONTH);
         DATE_PART.put("D", Calendar.DAY_OF_MONTH);

h2/src/test/org/h2/test/testSimple.in.txt

@@ -361,6 +361,8 @@ select extract(hour from '2001-02-03 14:15:16');
 > 14;
 select hour('2001-02-03 14:15:16');
 > 14;
+select extract(week from timestamp '2001-02-03 14:15:16');
+> 5;
 
 CREATE TABLE TEST(A int NOT NULL, B int NOT NULL, C int) ;
 ALTER TABLE TEST ADD CONSTRAINT CON UNIQUE(A,B);