Tag: join

java – Hibernate multiple entity join problem, additional queries are generated

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Questions: There is N+1 problem, while joining multiple entities with @OneToOne Association (Hibernate 5.2) @Entity @Table(name = “COMMON_CARDS”) public class CommonCards { @Id @Column(name = “card_number”) private String card_number; @Column(name = “card_id”) private String card_id; @Column(name = “bank_C”) private String bankC; @Column(name = “centre_Id”) private String centreId; @Column(name = “bank_Id”) private String bankId; @OneToOne(fetch = …

java – Hibernate formula with data from join

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Questions: I want to use Hibernate Formula https://docs.jboss.org/hibernate/orm/5.1/javadocs/org/hibernate/annotations/Formula.html with data, which is joined from another table, how can it be done? For example I have tables Person and Score. Score is already joined to Person with mapping, I want to use formula for sorting, for example Person with Score.rate = 5 are first. I do …

Sort 2 arrays in C by a joint logic

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Exception or error: Given two arrays a = [1,3,2,8,5,6] b = [4,3,2,5,1,2] I would like to sort them in “one pass” where the “logic” involves the two arrays, meaning: if int sortBySum(index i, index j){ if (a[i]+b[i] > a[j]+b[j]){ return 1; } return -1; } The output of the two arrays will be a = …

how Backslash \ joins printf strings when written on separate lines in C?

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Exception or error: Using Dev C++ I was doing some fun with C and got this : #include<stdio.h> main() { printf(“Hello world” ); } ^^^^ here I thought output would be like “Hello (with spaces) World” but Errors : C:\Users\ASUS\Documents\Dev C++ Programs\helloWorldDk.c In function ‘main’: 5 10 C:\Users\ASUS\Documents\Dev C++ Programs\helloWorldDk.c [Warning] missing terminating ” character …

go – Scanning joined tables into struct using GORM

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Exception or error: I’ve tried xy different ways to figure this out, none worked. Also, searched the whole internet for a solution, nothing fits my needs. I have two tables: users and user_info inside a MySQL database. Also, I created two structs inside my Go application, for both tables: type User struct { Token string …