SQL> create table t1(x number primary key); Table created. SQL> desc t1 Name Null? Type ———————– ——– —————- X NOT NULL NUMBER SQL> create table t2 as select * from t1; Table created. SQL> desc t2 Name Null? Type ———————– ——– —————- X NUMBER The table T2 has the column X, but not the constraint […]
better than CTAS
- Post author By Laurent Schneider
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