SELECT DATE_PART('day', '2011-12-31 01:00:00'::timestamp - '2011-12-29 23:00:00'::timestamp); -- Result: 1 1. 2. 3. PostgreSQL-周中的日期差异 考虑使用 SQL Server 函数来计算两周中两个日期之间的差额: SQL Server: -- Difference between Dec 22, 2011 and Dec 31, 2011 in wee...
row_number() over(partition by userid order by sigindate desc) ) as diff from t ) as t1 group by userid, diff; 1. 2. 3. 4. 5. 6. 7. 8. 9. (3)求diff计数的最大值,即求用户的最大活跃天数 select userid, max(diff计数) as '最大活跃天数' from ( select userid,diff, count...
postgres=# \c test You are now connected to database"test"asuser"postgres".test=# select*from tb_mytps;i|name---+---1|name12|name23|name34|name45|name56|name67|name78|name89|name910|name10(10rows) 开始备份 建立备份文件存放路径 代码语言:javascript 复制 [root@EULER1~]# mkdir/opt/...
AI代码解释 postgres=# select*from pg_database;oid|datname|datdba|encoding|datcollate|datctype|datistemplate|datallowconn|datconnlimit|datlastsysoid|datfrozenxid|datminmxid|dattablespace|datacl---+---+---+---+---+---+---+---+---+---+---+---+---+---...
SELECT t.relname, t.indexrelname, date_trunc('hour', snap_create_time) snap_day, t.idx_scan-lag(t.idx_scan,1) over w AS diff_idx_scan, t.idx_tup_read - lag(t.idx_tup_read,1) over w AS diff_idx_tup_read from db_stat.snapshot_pg_stat_all_indexes t ...
dateTemp timestamp; intervals interval; BEGIN IF lower($1) = lower(YEAR_CONST) THEN select cast(cast(incrementvalue as character varying) || ' year' as interval) into intervals; ELSEIF lower($1) = lower(MONTH_CONST) THEN select cast(cast(incrementvalue as character varying) || ' months...
pg:5432:*:barman:123456#更改权限chmod 600 ~/.pgpass#验证psql -c 'SELECT version()' -U barman -h pg postgres yum安装barman 由于barman是python写的,且有些功能需要使用postgresql的工具,安装时会有些依赖 yum install -y https://download.postgresql.org/pub/repos/yum/11/redhat/rhel-7.6-x86_64/...
SELECT[o].[Id]AS[Id], [cus].[Name]AS[CustomName]FROM[Order] oLeftJOIN[Custom] cusON([o].[CustomId] = [cus].[Id])LeftJOIN[OrderDetail] oritemON([o].[Id] = [oritem].[OrderId])LeftJOIN[OrderDetail] oritem2ON([o].[Id] = [oritem2].[OrderId])WHERE([o].[Id] = @Id0...
bench=# LOAD 'pgtt'; LOAD bench=# CREATE /*GLOBAL*/ TEMPORARY TABLE test_tt (id int, lbl text) ON COMMIT PRESERVE ROWS; CREATE TABLE bench=# INSERT INTO test_tt VALUES (1, 'one'), (2, 'two'), (3, 'three'); INSERT 0 3 bench=# SELECT * FROM pgtt_schema.test_tt; id |...
REPLACE_QUERY EMPLOYEES[SELECT e.id,e.fisrtname,lastname FROM EMPLOYEES e JOIN EMP_UPDT u ON (e.id=u.id AND u.cdate>'2014-08-01 00:00:00')] Control of Full Text Search export Several directives can be used to control the way Ora2Pg will export the Oracle's Text search indexes....