left-join

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Group by + joins

Hi I am having a problems using Group By and joins between 3 tables. I have a project table with various fields and a projectcode fields. I then have an invoice table and an hours table and each can[详细]

2023-03-14 03:29 分类：问答
Why cannot Hibernate find secondary table in an Entity?

I found no answers to this question which is also asked on many other forums. Although I have the tables IAS_FORM_BKT_BAYI and IAS_FORM_BKT_BAYI_SO present in the database, with the annotated enti[详细]

2023-03-13 19:38 分类：问答
Two COUNTS with Left Joins are Being Multiplied

I am trying to get a query that gives me the UserNames from table Users, the number of Jobs that user has from table Job2User, and the number of Places that user has from the table Place2User.[详细]

2023-03-13 19:15 分类：问答
doing a pivot-table-ish JOIN in SQL

My employer has a batch compute cluster that processes jobs submitted by开发者_如何学Go users.Each batch job consists of three steps:[详细]

2023-03-13 13:49 分类：问答
hibernate - HQL joins on many clauses

I\'ve been reading Hibernate documentation, but I haven\'t found anything that would explain how to do the following.[详细]

2023-03-13 08:53 分类：问答
mysql inner join giving bad results (?)

The following sql call works fine, returns the correct total retail for customers: SELECTcustomer.id, customer.first_name,[详细]

2023-03-13 05:47 分类：问答
Mysql join gives duplicate rows

I have 2 tables and i am using join to get common records from those 2 tables. i have used the following query but my problem is i am getting the records doubled. The query is as follows[详细]

2023-03-12 20:09 分类：问答
How can I select the current holder for each championship?

I want to select the current holders for each championship in a championships table, and return NULL for championships that have not had any winners yet.[详细]

2023-03-12 18:06 分类：问答
MySQL left outer join trouble

Here is a query that groups transactions by pricepoint on an hourly basis: SELECT hour(Stamp) AS hour, PointID AS pricepoint, count(1) AS counter[详细]

2023-03-12 14:37 分类：问答
Can I perform this Android query with ContentResolver.query()? (LEFT JOIN and CASE)

I am looking to perform the following query (in pseudo-code) on Android: SELECT C.ID, C.NAME, CASE ISNULL(G.GROUPID,0) = 0 THEN 0 ELSE 1 END INGROUP[详细]

2023-03-12 12:01 分类：问答