Answers for "how to alter check constraint in postgresql"

SQL
1

alter constraint postgres

/* Drop your constraint */
alter table yourtable drop constraint constraint_name;

/* Create new constraint */
alter table yourtable add constraint "constraint_name" FOREIGN KEY (some_id) REFERENCES yourtable(some_id) on delete cascade;
Posted by: Guest on February-02-2021
0

how to see constraints in postgresql

SELECT con.*
       FROM pg_catalog.pg_constraint con
            INNER JOIN pg_catalog.pg_class rel
                       ON rel.oid = con.conrelid
            INNER JOIN pg_catalog.pg_namespace nsp
                       ON nsp.oid = connamespace
       WHERE nsp.nspname = '<schema name>'
             AND rel.relname = '<table name>';
Posted by: Guest on November-09-2020

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