Create 1-creating-domain.sql

Author: uschwinn

data-platform/core-converged-db/database-23c/sql-domains/1-creating-domain.sql

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+REM Script for 23c: 1-creating-domain.sql 
+
+-- optional drop the domain.
+-- Using FORCE in contrast to PRESERVE disassociates the domain from all its dependent columns
+drop domain myemail_domain;
+
+--create a domain to describe an email
+
+create domain if not exists myemail_domain AS VARCHAR2(100)
+default on null 'XXXX' || '@missingmail.com'
+constraint email_c CHECK (regexp_like (myemail_domain, '^(\S+)\@(\S+)\.(\S+)$'))
+display substr(myemail_domain, instr(myemail_domain, '@') + 1);