use 'reuse storage keep statistics' to truncate on Informix

Author: gavinking

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/InformixDialect.java

@@ -510,6 +510,12 @@ public String getAddPrimaryKeyConstraintString(String constraintName) {
 		return " add constraint primary key constraint " + constraintName + " ";
 	}
 
+	@Override
+	public String getTruncateTableStatement(String tableName) {
+		return super.getTruncateTableStatement( tableName )
+			+ " reuse storage keep statistics";
+	}
+
 	@Override
 	public SequenceSupport getSequenceSupport() {
 		return sequenceSupport;