LEFT JOIN payout_ledgers pl ON pl.payout_id = p.id WHERE pl.id = (SELECT id FROM pl ORDER BY ts DESC LIMIT 1) 提前感谢您的任何建议。我也愿意接受架构更改的建议,这些更改可以使这种类型的逻辑更容易,尽管我的首选是尝试让查询工作,因为在我们的生产环境中,架构不容易更改。 LEFT JOIN LATERAL(d...
“This is a perfect scenario for a lateral join!” Have you ever heard that? If you were wondering “what’s a lateral join?” This will help. It’s pretty simple, but the combination of it with other SQL capabilities is quite powerful. PostgreSQL - Just for Kids Intro to SQL tutorial...
:tablesample <> :lateral false :inh true :inFromCl true :requiredPerms 2 :checkAsUser 0 :selectedCols (b 8 9 10) :insertedCols (b) :updatedCols (b) :extraUpdatedCols (b) :securityQuals <> } ) :jointree {FROMEXPR :fromlist ( {RANGETBLREF :rtindex 1 } ) :quals <> } :target...
静态列字段； 方法二：使用拼接SQL，动态列字段； 方法三：使用PIVOT关系运算符，静态列字段； 方法四：...
Transform each one (possibly adding * entries to the rtable), check for duplicate refnames, and then add it * to the joinlist and namespace. * * Note we must process the items left-to-right for proper handling of * LATERAL references. */ foreach(fl, frmList) { Node *n = lfirst...
hive 获取数组的最大值和最小值 exploded_column,XXXX.column2 from XXXX LATERAL VIEW explode(XXXX.column1) t1 as exploded_column 2、使用first_value获取最小值...,last_value获取最大值 select uid,point_id, first_value(loc_x)over(partition by uid order by point_id) as start 5.3K40 ...
Table C-1列出了所由在 SQL 标准和PostgreSQL 8.1 里是关键字的记号。 你可以在Section 4.1.1里找到相关的背景信息。 SQL 里有保留字(保留)和非保留字之分。根据标准, 保留字是那些真正的关键字;我们决不能用它们做标识符。 非保留字只是在特定的环境里有特殊的含义,而在其它环境里是可以用做标识符的。 大...
SELECT c.* FROM content c LEFT JOIN LATERAL json_array_elements(c.form->'blocks') blocks ON TRUE WHERE blocks->>'text' ILIKE '%hello%' GROUP BY id;SELECT c.* FROM content c, json_array_elements(c.form->'blocks') blocks WHERE blocks->>'text' ILIKE '%hello%' GROUP BY id;...
Navigation MenuProduct Solutions Resources Open Source Enterprise Pricing Search or jump to... Sign in Sign up simapple / postgresdigal Public forked from digoal/blog Notifications Fork 2 Star 6 Code Pull requests Actions Projects Wiki Security Insights simapple/postgresdigal...
LATERAL JOIN。现在速度更快了,我想了解为什么? 这个SO答案说没有黄金法则,这实际上取决于情况。但是,我想知道这是否有某种直觉? 如果相关,此查询将用作 VIEW。 带有 correlated subquery 的旧查询(技术上是 2): SELECT ts.id, ts.val1, tv.val2 FROM table_static AS ts JOIN table_version AS tv ON...