Question

当前正在检查将Postgres从10.4升级到11.5的过程。

当我使用“ check”选项运行for i in range((len(**num**))): chunk = num[i:i+13] product = 1 #multiply together the individual numbers that make up the chunk for **num** in chunk: # This creates a new variable named "num" # and discards the old variable stored in num print(num) product *= int(num)时，收到以下消息。如果您对此有任何评论，或者关于如何解决此问题，我将不胜感激。

for i in range((len(num))):
    chunk = num[i:i+13]

    product = 1
    #multiply together the individual numbers that make up 
        the chunk
    for j in chunk:
        print(j)
        product *= int(j)

Answer 1

在initdb新服务器上时，需要将其设置为与旧服务器匹配。类似于其中之一：

initdb --locale C  -D /var/lib/pgsql/11/data
pg_ctl initdb -o "--locale C"  -D /var/lib/pgsql/11/data
LC_ALL=C initdb  -D /var/lib/pgsql/11/data

Answer 2

您需要使用与旧群集相同（可更改）的编码来创建新群集：

initdb -E SQL_ASCII --locale=C /new/data/directory

Answer 3

@jjanes，劳伦兹·阿尔贝谢谢您的评论，根据文件我第一次还是听不懂我试图执行以下命令：#/usr/pgsql-11/bin/postgresql-11-setup initdb --locale=C -D /var/lib/pgsql/11/data
但是它正在下降，那么我已经按照您的建议执行了该命令，并且验证已成功完成：/usr/pgsql-11/bin/initdb --locale=C -D /var/lib/pgsql/11/data

-bash-4.2$ /usr/pgsql-11/bin/pg_upgrade \
> -b /usr/pgsql-10/bin \
> -B /usr/pgsql-11/bin \
> -d /var/lib/pgsql/10/data \
> -D /var/lib/pgsql/11/data \
> -c pgsql-10/ pgsql-11/
Performing Consistency Checks on Old Live Server
------------------------------------------------
Checking cluster versions                                   ok
Checking database user is the install user                  ok
Checking database connection settings                       ok
Checking for prepared transactions                          ok
Checking for reg* data types in user tables                 ok
Checking for contrib/isn with bigint-passing mismatch       ok
Checking for presence of required libraries                 ok
Checking database user is the install user                  ok
Checking for prepared transactions                          ok

*Clusters are compatible*

现在，我还有第二个问题，是否可以从源postgres DB中更改编码？如果我决定仅避免这种情况并默认情况下继续使用SQL_ASCII，它将以哪种方式影响？

数据库“ postgres”的Postgres从10.4编码升级到11.5编码不匹配：旧的“ SQL_ASCII”，新的“ UTF8”

3 个答案: