View your logs and query statistics in one single platform and monitor your key metrics in real-time. Trend analysis Analyze meaningful trends and get insights into your query performance history. Tuning recommendations Collect detailed insights and receive tuning recommendations for your per-table autov...
\ef [FUNCNAME [LINE]] edit function definition with external editor \ev [VIEWNAME [LINE]] edit view definition with external editor \p show the contents of the query buffer \r reset (clear) the query buffer \s [FILE] display history or save it to file \w FILE write query buffer to ...
# 创建一个表mydb=# create table testtable1(id int, tname varchar(20));mydb=# insert into testtable1 select n,'myname_'||n from generate_series(1,5000000) n;mydb=# explain analyze select * from testtable1 where tname='myname_10';QUERY PLAN --- Gather (cost=1000.00..58878.99 ...
(a)在对象浏览器中选择准备导出的表,右键选择[Query data],在弹出的窗口中,点击[Fetch last page]按钮,将所有数据显示出来; (b)选择数据行,点击右键,选择[Export Results]–》[CSV file],则被选中数据行将被导出。 (10)如何直接编辑某个表中的数据? (a)打开一个SQL Window,输入如下语句: select * from t...
-- Show how long each query takes to execute \timing -- Use best available output format \x auto \set VERBOSITY verbose \set HISTFILE ~/.psql_history- :DBNAME \set HISTCONTROL ignoredups \set COMP_KEYWORD_CASE upper \unset QUIET
Listing 11. The execution plan for the query with the IN operator. From PostgreSQL point of view, the IN operator is similar to the ANY operator for which an array is provided. So, it’s required to detect a function that accepts a string as an input parameter and returns an array. In...
-- Show how long each query takes to execute \timing -- Use best available output format \x auto \set VERBOSITY verbose \set HISTFILE ~/.psql_history- :DBNAME \set HISTCONTROL ignoredups \set COMP_KEYWORD_CASE upper \unset QUIET
\g or terminate with semicolon to execute query \q to quit testdb=> 用户可以在这个提示符下键入SQL查询。 通常,输入的行将在命令终止分号出现时送到服务器。 一行的终止并不结束命令!因此命令可以因清晰起见跨越好几行。如果命令发送出去而且执行没有错误, 命令结果会显示在屏幕上。
\crosstabview [COLUMNS] execute query and display resultsincrosstab \errverbose show most recent error message at maximum verbosity \g [(OPTIONS)] [FILE] execute query (and send results to file or |pipe); \g with no arguments is equivalent to a semicolon ...
Key names could be given either with or without double quotes. Key names without double quotes may not contain spaces, start with a number or match a jsquery keyword. The supported binary operators are: Equality operator:=; Numeric comparison operators:>,>=,<,<=; ...