.add(null, "SID", PropertyTypeKind.LONG, Attribute.PRIMARY_KEY)
.add(null, "VALUE_A", PropertyTypeKind.INT)
.add(null, "VALUE_B", PropertyTypeKind.LONG)
.add(null, "VALUE_C", PropertyTypeKind.DATE)
.toDescription();
SummarizedModelDescription summarize = new SummarizedModelBuilder("SIMPLE", target, "t")
.groupBy("VALUE_A")
.add("KEY", com.asakusafw.dmdl.thundergate.model.Aggregator.IDENT, "t.VALUE_A")
.add("SUM", com.asakusafw.dmdl.thundergate.model.Aggregator.SUM, "t.VALUE_B")
.add("COUNT", com.asakusafw.dmdl.thundergate.model.Aggregator.COUNT, "t.SID")
.add("MAX", com.asakusafw.dmdl.thundergate.model.Aggregator.MAX, "t.VALUE_C")