Create value-constructor.sql

Author: uschwinn

data-platform/core-converged-db/database-23c/23c-basic-examples/value-constructor.sql

@@ -0,0 +1,37 @@
+REM Script in 23c: value-constructor.sql
+
+-- use it in the FROM clause to generate rows
+SELECT *
+FROM (VALUES (1,'SCOTT'),
+             (2,'SMITH'),
+             (3,'JOHN')
+) t1 (employee_id, first_name);
+
+-- with clause
+with CCCP (c1,c2) as (
+  values (1, 'SCOTT'), (2, 'SMITH'), (3, 'JOHN'))
+select * from cccp;
+
+
+-- create a table and cast it to get the correct length of the column
+drop table if exists cccp;
+
+create table cccp
+as
+SELECT *
+FROM (VALUES (1,'SCOTT'),
+             (2,cast('SMITH' as VARCHAR2(30))),
+             (3,'JOHN')
+) t1 (employeed_id,first_name)
+where 1=2;
+
+desc cccp
+
+- use it to add 3 rows 
+insert into cccp (EMPLOYEED_ID, FIRST_NAME)
+values (1,'SCOTT'),
+        (2,'SMITH'),
+        (3,'JOHN');
+commit;
+
+select * from cccp;