在PostgreSQL 中,出现“column must appear in the GROUP BY clause or be used in an aggregate function”错误,通常是因为在 SELECT 语句中使用了 GROUP BY 子句,但某些列既未包含在 GROUP BY 子句中,也未被用作聚合函数的一部分。 错误原因 在PostgreSQL 中,当你使用 GROUP BY 子句对数据进行分组时,SELECT...
在gauss200下执行以下语句: SELECT stname,age,gender,AVG(age) FROM att_test01 GROUP BY gender HAVING age > AVG(age); 报错:column att_test01.stname must appear in the group by clause or be used in an aggregate function gauss200是基于开源的postgres-XC开发的分布式关系型数据库系统,这是postgre...
理解SQL、优化SQL都有很大的帮助,所以在在开始讲解Group by的使用之前,先简单了解下SQL执行的一个顺序。
我在pg生产模式下遇到此错误,但在sqlite3开发模式下工作正常。ActiveRecord::StatementInvalid in ManagementController#indexPG::Error: ERROR: column "estates.id" must appear in the GROUP BY clause or be used in an aggregate function LINE 1: SELECT "estates".* FROM "estates" WHERE "estates"."Mgmt"...
PostgreSQLGROUPBY列必须出现在GROUPBY中 、 FK_itemId"=items.id) as scoreGROUPBY score.id 内部块本身工作,我相信我遵循了相同的格式。但是,它会输出错误: ERROR: column "score.name" must appear in theGROUPBY clause or be used in an a
ERROR: column "makerar.wmname" must appear in the GROUP BY clause or be used in an aggregate function LINE 1: SELECT cname, wmname, MAX(avg) FROM makerar GROUP BY cname; 首先这个错误的原因是因为: Before SQL3 (1999), the selected fields must appear in the GROUP BY clause[*].Interes...
我在pg生产模式下遇到此错误,但在sqlite3开发模式下工作正常。 ActiveRecord::StatementInvalid in ManagementController#indexPG::Error: ERROR: column "estates.id" must appear in the GROUP BY clause or be used in an aggregate functionLINE 1: SELECT "estates".* FROM "estates" WHERE "estates"."Mgmt...
A "must appear in the GROUP BY clause" error occurs in PostgreSQL when a column is specified in the SELECT statement but it is not utilized in the GROUP BY clause or any aggregate function. To fix this error, the columns that are listed in the SELECT LIST must be included in...
Cause: org.postgresql.util.PSQLException: ERROR: column "r.name" must appear in the GROUP BY clause or be used in an aggregate function PostgreSQL的selectd字段必须是group by的字段里的 或者使用了聚合函数。MySQL则没有这个要求，非聚合列会随机取值。错误例子：select name, age, count(*)from user ...
如果是MySQL, 你可以直接group name 然后 select class,avg(score), 但是你在PostgreSQL里就不行。 他会爆出以下的错误 column “class” must appear in the GROUP BY clause or be used in an aggregate function 就是说这个 select class是非法的。 刚从MySQL切到PostgreSQL后很可能会比较难受这个点。 其实有...