diff options
| -rw-r--r-- | core/vm/sqlvm/schema/schema.go | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/core/vm/sqlvm/schema/schema.go b/core/vm/sqlvm/schema/schema.go index 7bbe9518e..e3e695663 100644 --- a/core/vm/sqlvm/schema/schema.go +++ b/core/vm/sqlvm/schema/schema.go @@ -71,6 +71,9 @@ type IndexRef uint8 // SequenceRef defines the type for sequence index in Table. type SequenceRef uint8 +// SelectColumnRef defines the type for column index in SelectStmtNode.Column. +type SelectColumnRef uint16 + // IndexAttr defines bit flags for describing index attribute. type IndexAttr uint16 @@ -198,3 +201,26 @@ func (c *Column) DecodeRLP(s *rlp.Stream) error { return nil } + +// TableDescriptor identifies a table in a schema by an array index. +type TableDescriptor struct { + Table TableRef +} + +// ColumnDescriptor identifies a column in a schema by array indices. +type ColumnDescriptor struct { + Table TableRef + Column ColumnRef +} + +// IndexDescriptor identifies a index in a schema by array indices. +type IndexDescriptor struct { + Table TableRef + Index IndexRef +} + +// SelectColumnDescriptor identifies a column specified in a select command by +// an array index. +type SelectColumnDescriptor struct { + SelectColumn SelectColumnRef +} |