Step 1:In the App Service page: From the left menu, selectMonitoring>App Service logs. UnderApplication logging, selectFile System. In the top menu, selectSave. Step 2:From the left menu, selectLog stream. You see the logs for your app, including platform logs and logs from inside the ...
'stu2',1);insert into studentvalues(3,'stu3',1);insert into studentvalues(4,'stu4',0);drop table course;create tablecourse(cno int primary key,cnamevarchar(10),tno int);insert into coursevalues(20,'meth',10);insert
selecttab.table_schema, tab.table_name, tco.constraint_name, string_agg(kcu.column_name,', ')askey_columnsfrominformation_schema.tables tableftjoininformation_schema.table_constraints tcoontco.table_schema = tab.table_schemaandtco.table_name = tab.table_nameandtco.constraint_type ='PRIMARY KEY...
select s::int,left(random()::text,4)l fromgenerate_series(1,2)s;--输出:两行、两列 s|l---+---1|0.552|0.28 1 rStartup = printtup_startup:申请上下文,发送行描述符 位置 代码语言:javascript 复制 #0printtup_startup(self=0x106dd50,operation=1,typeinfo=0x100d190)at printtup.c:113#1...
SELECT left(tract_id, 5) As county_code, SUM(hispanic_or_latino) As tot, SUM(white_alone) As tot_white, SUM(COALESCE(hispanic_or_latino,0) - COALESCE(white_alone,0)) AS non_white FROM census.hisp_pop GROUP BY county_code ORDER BY county_code; we will get the graphical explain sh...
pgCluu 是一个对 PostgreSQL 集群性能进行完整审计的工具,该工具分为两部分: 1. collector 收集器用于从 PostgreSQL 集群中获取统计数据,使用展开收起 暂无标签 https://www.oschina.net/p/pgcluu Perl等 3 种语言 PostgreSQL 保存更改 取消 发行版
event_timetimestamptzdefault now(), data jsonbnot null) USING columnar;--insert some dataINSERT INTOevents_columnar (device_id, data)SELECTd,'{"hello":"columnar"}'FROMgenerate_series(1,10000000) d;--create a row-based table to compareCREATETABLEevents_rowASSELECT*FROMevents_columnar;--see...
REPLACE_QUERY Sometime you may want to extract data from an Oracle table but you need a custom query for that. Not just a "SELECT * FROM table" like Ora2Pg do but a more complex query. This directive allows you to overwrite the query used by Ora2Pg to extract data. The format is...
transformTopLevelStmt函数负责在调用transformOptionalSelectInto函数之后,将parseTree中的stmt_localtion和stmt_len复制到查询树Query相应字段中。而transformOptionalSelectInfo函数的作用是在select语句中还有INTO时,将其转换为CREATE TABLE AS。 1Query * transformTopLevelStmt(ParseState *pstate, RawStmt *parseTree){2...
Sign in to the Azure portal and select your Azure Database for PostgreSQL server. SelectServer Parametersin theSettingssection of the menu. Search for thepg_qs.query_capture_modeparameter. Set the value toTOPandSave. To enable wait statistics in your Query Store: ...