更改查询中的某些字段答案

【问题标题】：Change some fields in a query更改查询中的某些字段
【发布时间】：2023-01-18 21:41:40
【问题描述】：

我正在使用以下查询来获取服务器列表：

select 
                                DISTINCT upper("Local_Hostname_U")

                            from 
                                "Services_Inventory_610"
                            where 
                                CASE
                                   --WHEN upper("Local_Hostname_U")='EAP-WEBSERVICES.WEB.INPS' THEN upper("Local_Hostname_U")='WEBINPS59'
                                   WHEN "TMZDIFF"=-3600 THEN  ("Interval_Begin_Time">=1230110230000000 and "Interval_Begin_Time"<1230111230000000)
                                   WHEN "TMZDIFF"=-7200 THEN  ("Interval_Begin_Time">=12301100000000 and "Interval_Begin_Time"<1230110230000000)
                                END
                                order by upper("Local_Hostname_U")

我得到以下列表：

CUSTMON03.SERVIZI.INPS
EAP-WEBSERVICES.WEB.INPS
JAVAZAPPWS-P01
JAVAZAPPWS-P02
JAVAZAPPWS-P03
JAVAZAPPWS-P04
JAVAZAPPWS-P05
JAVAZAPPWS-P06
JAVAZAPPWS-P07
JAVAZAPPWS-P08
LHEWBSWAS01
LHEWBSWAS02
LHEWBSWAS03
LHEWBSWAS04
LHEWBSWAS05
LHEWBSWAS06
LHEWBSWAS07
LHEWBSWAS08
LHEWBSWAS09
LHEWBSWAS10
LHEWBSWAS11
LHEWBSWAS12
WEBINPS120.SERVIZI.INPS
WEBINPS52
WEBINPS53
WEBINPS54
WEBINPS55
WEBINPS56.SERVIZI.INPS
WEBINPS58
WEBINPS62.SERVIZI.INPS

有没有办法用 WEBINPS59 替换 EAP-WEBSERVICES.WEB.INPS 并从同一查询中的列表中删除字符串“.SERVIZI.INPS”？

【问题讨论】：

标签： sql

【解决方案1】：

尝试这个：

select  DISTINCT REPLACE(upper("Local_Hostname_U"), 'EAP-WEBSERVICES.WEB.INPS', 'WEBINPS59 ')
from "Services_Inventory_610"
where 
    CASE
    --WHEN upper("Local_Hostname_U")='EAP-WEBSERVICES.WEB.INPS' THEN upper("Local_Hostname_U")='WEBINPS59'
        WHEN "TMZDIFF"=-3600 THEN  ("Interval_Begin_Time">=1230110230000000 and "Interval_Begin_Time"<1230111230000000)
        WHEN "TMZDIFF"=-7200 THEN  ("Interval_Begin_Time">=12301100000000 and "Interval_Begin_Time"<1230110230000000)
    END
    AND "Local_Hostname_U" NOT LIKE '%.SERVIZI.INPS'
order by upper("Local_Hostname_U")

【讨论】：

【解决方案2】：

如果您使用 postgreSQL，请尝试使用 split_part：

  select DISTINCT SPLIT_PART(upper("Local_Hostname_U"), '.',1)
                                from 
                                    "Services_Inventory_610"
                                where 
                                    CASE
                                       --WHEN upper("Local_Hostname_U")='EAP-WEBSERVICES.WEB.INPS' THEN upper("Local_Hostname_U")='WEBINPS59'
                                       WHEN "TMZDIFF"=-3600 THEN  ("Interval_Begin_Time">=1230110230000000 and "Interval_Begin_Time"<1230111230000000)
                                       WHEN "TMZDIFF"=-7200 THEN  ("Interval_Begin_Time">=12301100000000 and "Interval_Begin_Time"<1230110230000000)
                                    END
                                    order by upper("Local_Hostname_U")

这个 split_part 函数只显示.之前的内容

【讨论】：