fix the sort key missing in tables having cluster by clause (matrixo…

…rigin#12019)

fix the sort key missing in tables having a `cluster by` clause.

the sort key only exists in memory and is constructed when creating schema by reading checkpoint data.

the sort key will be used later in `metadata_scan` and judging if it is needed to `mergesort` columns.

Approved by: @XuPeng-SH

pkg/vm/engine/tae/catalog/schema.go

@@ -572,6 +572,9 @@ func (s *Schema) ReadFromBatch(bat *containers.Batch, offset int, targetTid uint
 		def.Hidden = i82bool(isHidden)
 		isClusterBy := bat.GetVectorByName((pkgcatalog.SystemColAttr_IsClusterBy)).Get(offset).(int8)
 		def.ClusterBy = i82bool(isClusterBy)
+		if def.ClusterBy {
+			def.SortKey = true
+		}
 		isAutoIncrement := bat.GetVectorByName((pkgcatalog.SystemColAttr_IsAutoIncrement)).Get(offset).(int8)
 		def.AutoIncrement = i82bool(isAutoIncrement)
 		def.Comment = string(bat.GetVectorByName((pkgcatalog.SystemColAttr_Comment)).Get(offset).([]byte))