New experimental feature to speed up CREATE TABLE ... AS SELECT.

h2/src/main/org/h2/command/dml/Insert.java

@@ -167,6 +167,10 @@ public class Insert extends Prepared implements ResultTarget {
         }
     }
 
+    public int getRowCount() {
+        return rowNumber;
+    }
+
     public String getPlanSQL() {
         StatementBuilder buff = new StatementBuilder("INSERT INTO ");
         buff.append(table.getSQL()).append('(');

h2/src/main/org/h2/command/dml/Select.java

@@ -504,7 +504,7 @@ public class Select extends Query {
                 }
                 result.addRow(row);
                 rowNumber++;
-                if ((sort == null || sortUsingIndex) && limitRows != 0 && rowNumber >= limitRows) {
+                if ((sort == null || sortUsingIndex) && limitRows != 0 && result.getRowCount() >= limitRows) {
                     break;
                 }
                 if (sampleSize > 0 && rowNumber >= sampleSize) {

h2/src/main/org/h2/result/ResultTarget.java

@@ -20,4 +20,11 @@ public interface ResultTarget {
      */
     void addRow(Value[] values);
 
+    /**
+     * Get the number of rows.
+     *
+     * @return the number of rows
+     */
+    int getRowCount();
+
 }