Primary key constraints

Hi group,

I removed a table from db names experiment.
It has a primary key exp_id (experiment_exp_id_seq)

I renamed that table to study. I re-created experiment
table with all new column names. exp_id
(experiment_exp_id_seq) remains the primary key for
this table.

Now when I try to execute this table I get the
following error:

psql:/home/db/experiment.sql:10: ERROR: relation
"experiment_exp_id_seq" already exists

How to remove this key from every where from the whole
db.

Thank you.

K

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