ahkarm

DO $$
DECLARE
    sql_text text;
BEGIN
    SELECT string_agg(
        'ALTER TABLE ' || quote_ident(table_schema) || '.' || quote_ident(table_name) ||
        ' ADD CONSTRAINT pk_' || table_name ||
        ' PRIMARY KEY (' || quote_ident(column_name) || ');',
        E'\n'
    )