Postgres：更新所有表的主键序列

Question

我已手动将生产中的所有数据导入到开发服务器，但出现此错误。我还在这里阅读了修复此问题的文章，但仅限于单个表。我已经导入了大约 10 个以上的表及其数据。这是错误：

PG::UniqueViolation: ERROR: duplicate key value violates unique constraint "influences_pkey" DETAIL: Key (id)=(1) already exists. : INSERT INTO "influences" ("name", "created_at", "updated_at") VALUES ($1, $2, $3) RETURNING "id"

Answer 1

这是 plpgsql 来重置所有序列（在 pgadmin 或 psql 或任何其他客户端中运行）：

do 
$$
declare
 _r record;
 _i bigint;
 _m bigint;
begin
  for _r in (
    SELECT relname,nspname,d.refobjid::regclass, a.attname, refobjid
    FROM   pg_depend    d
    JOIN   pg_attribute a ON a.attrelid = d.refobjid AND a.attnum = d.refobjsubid
    JOIN pg_class r on r.oid = objid
    JOIN pg_namespace n on n.oid = relnamespace
    WHERE  d.refobjsubid > 0 and  relkind = 'S'
   ) loop
    execute format('select last_value from %I.%I',_r.nspname,_r.relname) into _i;
    execute format('select max(%I) from %s',_r.attname,_r.refobjid) into _m;
    if coalesce(_m,0) > _i then
      raise info '%',concat('changed: ',_r.nspname,'.',_r.relname,' from:',_i,' to:',_m); 
      execute format('alter sequence %I.%I restart with %s',_r.nspname,_r.relname,_m+1);
    end if;
  end loop;

end;
$$
;

或使用How to Reset Postgres' Primary Key Sequence when it Falls Out Synchronization?中提出的任何其他解决方案