Merge remote-tracking branch 'origin/master'

Added example for Column_Elem

Author: ShortIsLong

sql/tsql/examples/Column_Elem.sql

@@ -0,0 +1,22 @@
+USE tempdb
+
+CREATE TABLE col_elem_ex
+(
+	ident int NOT NULL IDENTITY(1,1),
+	rguid UNIQUEIDENTIFIER NOT NULL DEFAULT NEWID() ROWGUIDCOL,
+	col1 INT
+)
+
+INSERT INTO col_elem_ex(col1) VALUES(2)
+
+SELECT $IDENTITY AS ident_col FROM col_elem_ex
+
+SELECT $ROWGUID AS guid_col FROM col_elem_ex
+
+SELECT col_elem_ex.col1 AS qualified_col FROM col_elem_ex
+
+SELECT col1 AS nonQualified_col FROM col_elem_ex
+
+SELECT NULL AS null_col FROM col_elem_ex
+
+DROP TABLE col_elem_ex