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Questions - cross-join

SQL CROSS JOIN with JPA Specification

I have a Spring Boot project which has three entity classes like the following, @Entity @Table("item") public class Item extends SomeParent { @OneToMany(cascade = CascadeType.ALL, fetc...
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Dave

java

spring-boot

jpa

spring-data-jpa

cross-join

Votes: 0

Answers: 1

Latest Answer

AND won't work because you are performing the filter check on the same product/fruit as the other checks. A product's fruit can't be both an apple and a mango. The solution is to manually create two s...
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Chris

Combining overlapping date ranges without using a cross join in BigQuery

If I have this dataset: create schema if not exists dbo; create table if not exists dbo.player_history(team_id INT, player_id INT, active_from TIMESTAMP, active_to TIMESTAMP); truncate table dbo.playe...
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Anton

google-bigquery

self-join

gaps-and-islands

correlated-subquery

cross-join

Votes: 0

Answers: 2

Latest Answer

You can use a partitioned table to get better performance with large amounts of information. The partitioned tables divide a large table into smaller partitions, thus you can improve query performance...
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Raul Saucedo

PostgreSQL CROSS JOIN but do not fill in "missing" values

Is there a Postgres join command that joins every single row from the left table to each individual row in the right table, but doesn't fill in "missing values"? Something that feels kind of...
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Jacob Miller

postgresql

join

left-join

cross-join

Votes: 0

Answers: 2

Latest Answer

I was able to resolve this using a CTE, but am leaving it open in case there are any other answers. WITH cross_join_sq AS ( SELECT DISTINCT tn.tn_id, tc1.well_id FROM temp_conditions tc1 C...
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Jacob Miller

How to fill the empty record per group using mysql?

I am trying to handle the sql query in order to get what I want. Below is the schema of the table. CREATE TABLE MY_LOG ( RANKING VARCHAR(20) , DAYOFWEEK VARCHAR(10) , MENU VA...
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sclee1

mysql

sql

cross-join

Votes: 0

Answers: 2

Latest Answer

You can try to use OUTER JOIN with a subquery which does CORSS JOIN get a result RANKING & DAYOFWEEK Cartesian product Query #1 SELECT t1.RANKING, t2.DAYOFWEEK, t2.MENU FROM ( S...
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D-Shih

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