我如何解决PostgreSQL错误，“无法确定要使用哪种融合进行字符串比较”？

Question

每当我运行此SQL脚本时，我都会得到：

错误：无法确定要使用哪种整理进行字符串比较

这就是第34行上的内容：

CREATE TEMPORARY TABLE weight_options AS
  SELECT
    io.lot_id
    , io.vin
    , map.fkey_style AS chrome_styleid
    , SUM( CASE WHEN co.code = io.code THEN 1 ELSE 0 END ) AS exact_option
    , SUM( CASE WHEN length(io.code) = 2 AND co.code LIKE io.code || '%' THEN 1 ELSE 0 END ) AS appx_option
    , (
      SUM( CASE WHEN co.code = io.code THEN 2 ELSE 0 END )
      + SUM( CASE WHEN length(io.code) = 2 AND co.code LIKE io.code || '%' THEN 1 ELSE 0 END )
    ) AS option_weight
  FROM inventory.options AS io
  -- options *must* have same index as inventory.vehicles
  JOIN chrome_vinmatch_best_match AS vd
    USING ( vin )
  JOIN chrome_vinmatch.style AS map
    ON ( vd.chrome_patternid = map.fkey_pattern )
  JOIN chrome_nvd.options AS co
    ON ( io.code = co.code AND map.fkey_style = co.fkey_style AND io.code IS NOT NULL )
  GROUP BY io.lot_id, io.vin, map.fkey_style
;

我只是从安装的迁移 8.4.11 安装 9.1.3 使用 pg_dump.

Answer 1

在 9.1.2的发行说明

制作conter/citext的升级脚本修复Citext列和索引的碰撞（Tom Lane）

现有的Citext列和索引未正确标记为从9.1前服务器的PG_UPGRADE期间的可汇合数据类型。这导致对它们的操作失败，例如“无法确定要使用哪种整理进行字符串比较”。此更改使它们可以通过将Citext模块升级到适当的9.1扩展名的相同脚本来修复，从而使他们从未包装中创建扩展名Citext。

如果您有一个遇到此问题的先前升级数据库，并且已经运行了Create Extension命令，则可以手动运行（作为SuperuSer）在ShareShareir/extension/extension/citext ten the the Update命令 - unpackaged-- unpackaged-- 1.0.SQL。 （运行pg_config -sharedir如果您不确定共享在哪里。）

所以我在那个文件中查找了 UPDATE 命令并找到了这些：

UPDATE pg_catalog.pg_type SET typcollation = 100
WHERE oid = 'citext'::pg_catalog.regtype;

UPDATE pg_catalog.pg_attribute SET attcollation = 100
WHERE atttypid = 'citext'::pg_catalog.regtype;

UPDATE pg_catalog.pg_index SET indcollation[0] = 100
WHERE indclass[0] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[1] = 100
WHERE indclass[1] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[2] = 100
WHERE indclass[2] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[3] = 100
WHERE indclass[3] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[4] = 100
WHERE indclass[4] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[5] = 100
WHERE indclass[5] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[6] = 100
WHERE indclass[6] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);

UPDATE pg_catalog.pg_index SET indcollation[7] = 100
WHERE indclass[7] IN (SELECT oid FROM pg_catalog.pg_opclass
                      WHERE opcintype = 'citext'::pg_catalog.regtype);