The first use of the sequence is allowed. You can write a BEFORE INSERT TRIGGER to insert sequence values into the second column.
HSQLDB - link several sequences for several columns of the table
Question
I would like to link several sequences for generating default values for several columns of a table.
For example:
CREATE SEQUENCE seq1 START WITH 1;
CREATE SEQUENCE seq2 START WITH 1;
CREATE TABLE mytable (rid int GENERATED BY DEFAULT AS SEQUENCE seq1 PRIMARY KEY, p63 int GENERATED BY DEFAULT AS SEQUENCE seq2)
Unfortunately, an error is occured: "identity definition not allowed"
In Postgresql is working.
Any idea ?
Thanks
Solution
OTHER TIPS
Having the same issue, I came upon this post. I used another workaround :
CREATE SEQUENCE seq1 START WITH 1; CREATE SEQUENCE seq2 START WITH 1; CREATE TABLE mytable ( rid int DEFAULT nextval('seq1') NOT NULL, p63 int NOT NULL ); ALTER TABLE mytable ALTER p63 SET DEFAULT NEXTVAL('seq2');
Altering the p63
column after table creation made possible to use the seq2
sequence while it was not accepted when creating the table.
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