Postgresql操作符类“varchar_pattern_ops”不接受数据类型整数 [英] Postgresql operator class "varchar_pattern_ops" does not accept data type integer
问题描述
我正在尝试将我的数据id postgresql从字符串迁移到django中的整数,以便在sphinx搜索中使用它们。所以首先我正在进行数据迁移,将数据转换为字符串的整数,如下所示。
I'm trying migrate my data id postgresql from string to integers in django to use them in sphinx search. So first of all I'm making data migration, converting my data to integers in string like this
db.execute('''UPDATE the_table SET foo='1' WHERE foo='bar';''')
然后我正在进行模式迁移
Then I'm making schema migration
ALTER TABLE the_table ALTER COLUMN col_name TYPE integer USING (col_name::integer);
喜欢被告知这里
但我收到错误
错误:操作符类varchar_pattern_ops不接受数据类型整数
ERROR: operator class "varchar_pattern_ops" does not accept data type integer
SQL-состояние:42804
SQL-состояние: 42804
此错误发生在South和pgAdmin中。数据是正确的 - 字符串类型为空或整数。我做错了什么?
This error occurs both in South and pgAdmin. The data is correct - it is Null or integer in string type. What am I doing wrong?
推荐答案
我只能复制你的错误信息,如:
I'm only able to reproduce your error message like so:
denis=# create index test_idx on test (val varchar_pattern_ops);
CREATE INDEX
denis=# alter table test alter val type int using (val::int);
ERROR: operator class "varchar_pattern_ops" does not accept data type integer
这样一个时髦的索引,尝试删除并重新创建它:
If you've a funky index like that, try dropping and recreating it like so:
denis=# drop index test_idx;
DROP INDEX
denis=# create index test_idx on test (val);
CREATE INDEX
denis=# alter table test alter val type int using (val::int);
ALTER TABLE
相关文档:
http://www.postgresql.org/docs/current/ static / indexes-opclass.html
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