MySQL compatibility for CREATE TABLE is improved (UNSIGNED, KEY).

h2/src/docsrc/html/changelog.html

@@ -18,7 +18,8 @@ Change Log
 <h1>Change Log</h1>
 
 <h2>Next Version (unreleased)</h2>
-<ul><li>Recovery did not work if there were more than 255 lobs stored as files.
+<ul><li>MySQL compatibility for CREATE TABLE is improved (UNSIGNED, KEY).
+</li><li>Recovery did not work if there were more than 255 lobs stored as files.
 </li><li>New experimental mode to support multiple read-write connections without starting
     a server. To enable this mode, append ;FILE_LOCK=SERIALIZED;OPEN_NEW=TRUE to the database URL.
     Don't expect high performance when multiple concurrent writers.

h2/src/main/org/h2/command/Parser.java

@@ -3388,6 +3388,8 @@ public class Parser {
                 dataType = DataType.getTypeByName("BINARY");
             }
         }
+        // MySQL compatibility
+        readIf("UNSIGNED");
         int type = dataType.type;
         Column column = new Column(columnName, type, precision, scale, displaySize);
         if (templateColumn != null) {
@@ -4471,6 +4473,7 @@ public class Parser {
             command.setType(AlterTableAddConstraint.CHECK);
             command.setCheckExpression(readExpression());
         } else if (readIf("UNIQUE")) {
+            readIf("KEY");
             readIf("INDEX");
             command = new AlterTableAddConstraint(session, schema, ifNotExists);
             command.setType(AlterTableAddConstraint.UNIQUE);