SELECT TO_CHAR(MAX(SUM(salary))) Max_Salary FROM teams t JOIN playersalary p ON t.id = p.team_id GROUP BY name; Output: 在这里我可以拿到最高工资,但我不能显示球队的名字。 #2: SELECT name, salary FROM teams t JOIN playersalary p ON t.id = p.team_id WHERE salary = (SELECT MAX...
在SQL 中,子查询属于 Nested Query 的一种形式,根据 Kim 的分类[1],Nested Query 即嵌套查询是一种 SQL-like 形式的查询语句嵌套在另一 SQL 中,SQL-like 的嵌套子句可以出现在 SELECT、FROM 和 WHERE 子句的任意位置。 在MySQL 中,一般把出现在 WHERE 子句中的嵌套 SQL 称为 subquery(子查询),而出现在 ...
A subquery can be nested inside other subqueries. SQL has an ability to nest queries within one another. A subquery is a SELECT statement that is nested within another SELECT statement and which return intermediate results. SQL executes innermost subquery first, then next level. See the following...
错误信息 "bad sql grammar []; nested exception is java.sql.SQLException: subquery..." 通常表示在执行SQL查询时,SQL语法有误,且错误与子查询(subquery)相关。这意味着在SQL语句中嵌入的子查询部分存在语法错误,导致整个SQL语句无法正确执行。 推测可能导致这种错误出现的SQL语法或逻辑问题 子查询位置错误:子查询...
SubqueryorInner queryorNested queryis a query in a query. SQL subquery is usually added in theWHEREClause of the SQL statement. Most of the time, a subquery is used when you know how to search for a value using a SELECT statement, but do not know the exact value in the database. ...
in Functions Basic SELECT Statements Filtering Sorting Grouping JOIN Subquery Subquery Nested by WHERE Subquery Nested by FROM Subquery Nested by HAVING Multi-Layer Nested Subquery Alias Set Operations WITH...AS CASE...WHEN OVER Clause Flink OpenSource SQL 1.12 Syntax Reference Flink Opensource SQL ...
You can display data from a main query by using a group function in a subquery to return a single row Sub Queries Also known as embedded selects, inner query or nested query A subquery is enclosed in parentheses SELECT last_name,
对于前面 2 种类型的子查询表达式 Calcite 会在 parse 阶段生成对应的 operator 并标记相应的Kind; 而 ScalarSubQuery 比较特殊,会在 SqlNode 转 Rel 开始的 validate 阶段做在转 rel 之前是识别出叫 SCALAR_QUERY 的特殊 internal operator 并指定 Kind 为 SCALAR_QUERY;这样在之后可以通过上 Kind 识别出这些子...
format=json SELECT * FROM t1 WHERE t1.a IN (SELECT c FROM t2 WHERE (SELECT e FROM t3ast31) < SOME (SELECT e FROM t3ast32 WHERE t1.b))\G***1. row ***EXPLAIN: {"query_block": {"select_id":1,"nested_loop": [ {"table": {"table_name":"t1","access_type":"ALL","rows...
-> Nested loop inner join -> Filter: ((part.p_container = 'LG CAN') and (part.p_brand = 'Brand#33')) -> Table scan on part -> Filter: (lineitem.l_quantity < (select #2)) -> Index lookup on lineitem using l_partkey_idx (l_partkey=part.p_partkey) ...