Category: sql
If you want to design an SQL database from scratch, revamp an existing system, or collaborate with your software developers, you need professional SQL database experts for the job. …
The jOOQ (https://www.jooq.org/) is a rich Java Library that allows us to write SQL using fluent style. It generates type-safe SQL and avoids SQL injections rather than building your …
Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and …
Given the following SQL Schema, CREATE TABLE If Not Exists point_2d (x INT NOT NULL, y INT NOT NULL) Truncate table point_2d insert into point_2d (x, y) values ('-1', …
Given the following SQL Schema: Create table If Not Exists Employee (Id int, Name varchar(255), Department varchar(255), ManagerId int) Truncate table Employee insert into Employee (Id, Name, Department, ManagerId) …