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Showing posts with label primary key. Show all posts
Showing posts with label primary key. Show all posts
Friday, 23 March 2018

ORA-02270 solution

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Preparation SQL> create table A (id number, soid number); SQL> create table B (id number); Action SQL>  alter table A add...
Friday, 19 January 2018

How to define primary key on existed table?

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e.g. steps; lock table -> add new column for primary key -> update data with counter -> define sequence -> define trigger -...
Wednesday, 25 October 2017

ORA-02266 solution

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Action A table has a PK (Primary Key) B table has a FK (Foreign Key) and referenced to A table's PK -> User tries to truncate tab...
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