0

我经常在我的 Rails 开发日志中看到以下 postgres 错误/警告。它不会导致我的应用程序失败（我希望如此）。知道是什么原因造成的吗？我能做些什么来调试这个？

安装在我的电脑上：- Ruby 1.8.7 (2008-08-11 patchlevel 72) [i486-linux]
- Rails 2.2.2
- PostgreSQL 8.3.7

  [4;36;1mSQL (0.1ms)[0m   [0;1mSET client_min_messages TO 'panic'[0m
  [4;35;1mSQL (0.1ms)[0m   [0mSET client_min_messages TO 'notice'[0m
  [4;36;1mSQL (0.7ms)[0m   [0;1mSELECT version FROM schema_migrations[0m
DEPRECATION WARNING: ActionMailer::Base.register_template_extension has been deprecated.Use ActionView::Base.register_template_extension instead. (called from /home/gsmendoza/workspace/idea/georgemendoza/config/environment.rb:104)
  [4;35;1mSQL (0.2ms)[0m   [0mbegin[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1msavepoint ts[0m
  [4;35;1mSQL (0.0ms)[0m   [0mPGError: ERROR: function "array_accum" already exists with same argument types
: CREATE AGGREGATE array_accum (anyelement)
 (
 sfunc = array_append,
 stype = anyarray,
 initcond = '{}'
 );
[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1mrollback to savepoint ts[0m
  [4;35;1mSQL (0.1ms)[0m   [0mrelease savepoint ts[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1mcommit[0m
  [4;35;1mSQL (0.1ms)[0m   [0mbegin[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1msavepoint ts[0m
  [4;35;1mSQL (0.0ms)[0m   [0mPGError: ERROR: language "plpgsql" already exists
: CREATE LANGUAGE 'plpgsql';[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1mrollback to savepoint ts[0m
  [4;35;1mSQL (0.1ms)[0m   [0mrelease savepoint ts[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1mcommit[0m
  [4;35;1mSQL (0.1ms)[0m   [0mbegin[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1msavepoint ts[0m
  [4;35;1mSQL (2.6ms)[0m   [0m CREATE OR REPLACE FUNCTION crc32(word text)
 RETURNS bigint AS $$
 DECLARE tmp bigint;
 DECLARE i int;
 DECLARE j int;
 DECLARE word_array bytea;
 BEGIN
 i = 0;
 tmp = 4294967295;
 word_array = decode(replace(word, E'\\', E'\\\\'), 'escape');
 LOOP
 tmp = (tmp # get_byte(word_array, i))::bigint;
 i = i + 1;
 j = 0;
 LOOP
 tmp = ((tmp >> 1) # (3988292384 * (tmp & 1)))::bigint;
 j = j + 1;
 IF j >= 8 THEN
 EXIT;
 END IF;
 END LOOP;
 IF i >= char_length(word) THEN
 EXIT;
 END IF;
 END LOOP;
 return (tmp # 4294967295);
 END
 $$ IMMUTABLE STRICT LANGUAGE plpgsql;
[0m
  [4;36;1mSQL (0.1ms)[0m   [0;1mrelease savepoint ts[0m
  [4;35;1mSQL (0.8ms)[0m   [0mcommit[0m
4

2 回答 2

0

你不需要做任何事情。看起来 Rails 只是试图安装一种已经安装的 plpgsql 语言，并创建一个你的 PostgreSQL 版本已经拥有的函数。

Rails 已经为此做好了准备，只是忽略了这个错误。不是一个好的编程示例，但没什么好担心的。

于 2009-05-20T06:57:42.423 回答
0

我意识到这个错误是因为我的错而出现的

  1. 删除测试数据库
  2. 创建新的测试数据库
  3. 列表项在尝试迁移开发数据库的结构以进行测试时尝试反之亦然

长时间工作的副作用；）

于 2011-03-03T23:16:46.540 回答