Sunday, 8 May 2022

Create or Add or Remove a UUID column in Oracle NoSQL Database

UUID Column without GENERATED BY DEFAULT:

SQL> CREATE TABLE UUID_TEST (id STRING AS UUID,name STRING, PRIMARY KEY (id));

Statement completed successfully


SQL> INSERT INTO UUID_TEST  values("40c8dc55-f5ef-4af2-ad81-4d8ebc076f57", "test1");

Statement completed successfully


SQL> Commit:


UUID Column using GENERATED BY DEFAULT:

SQL> CREATE TABLE UUID_TEST (id STRING AS UUID GENERATED BY DEFAULT, name STRING, PRIMARY KEY (id));

Statement completed successfully


SQL> INSERT INTO UUID_TEST VALUES(default,"test1");

Statement completed successfully



Adding a UUID Column to an Existing Table:

SQL> CREATE TABLE UUID_TEST(id INTEGER,name STRING, PRIMARY KEY(id));

Statement completed successfully


SQL> ALTER TABLE UUID_TEST (ADD new_id STRING AS UUID GENERATED BY DEFAULT );

Statement completed successfully


Dropping a UUID Column:

SQL>ALTER TABLE UUID_TEST (DROP new_id);

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