SQL

How to implement the SQL INSTR() function? — step-by-step DevOps tutorial on Progressive Robot

How to implement the SQL INSTR() function?

URL: https://www.progressiverobot.com/sql-instr-function/ Hey, folks! In this article, we will be understanding SQL INSTR() function in detail. Working of SQL INSTR() SQL, being a query language, contains various in-built functions to deal with the String data values of the database. One such interesting function is SQL INSTR() function. SQL INSTR() function detects the first occurrence of […]

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How To Use Unions in SQL — step-by-step DevOps tutorial on Progressive Robot

How To Use Unions in SQL

When retrieving data from a database, you may need to refer to more than one table at a time. In Structured Query Language (SQL), you can use the `UNION` operation, which takes the results of two queries with matching columns and merges them into one. In this guide, you will use `UNION` operations to retrieve data from more than one table simultaneously and combine the results. You will also combine the `UNION` operator with filtering to order the results.

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SQL Interview Questions and Answers — step-by-step DevOps tutorial on Progressive Robot

SQL Interview Questions and Answers

URL: https://www.progressiverobot.com/sql-interview-questions-answers/ SQL interview questions are asked in almost all interviews because database operations are very common in applications. SQL stands for Structured Query Language, which is a domain-specific programming language used for database communications and relational database management. SQL consists of standard commands for database interactions such as SELECT, INSERT, CREATE, DELETE, UPDATE, DROP […]

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SQL IN - SQL NOT IN — step-by-step DevOps tutorial on Progressive Robot

SQL IN – SQL NOT IN

URL: https://www.progressiverobot.com/sql-in-sql-not-in/ SQL IN operator is used along with WHERE clause for providing multiple values as part of the WHERE clause. 1. SQL IN SQL IN operator is almost like having multiple OR operators for the same column. Let's discuss in detail about the SQL IN operator. There are two ways to define IN operator. […]

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What is the Relational Model? — step-by-step DevOps tutorial on Progressive Robot

What is the Relational Model?

The relational model is an abstract model used to organize data within a database. In order to control access to a database, write data, run queries, or perform any other tasks related to database management, a database management system must have some kind of underlying model that defines how…

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How To Use WHERE Clauses in SQL — step-by-step DevOps tutorial on Progressive Robot

How To Use WHERE Clauses in SQL

In Structured Query Language (SQL) statements, WHERE clauses limit what rows the given operation will affect. This guide will go over the general syntax used in WHERE clauses. It will also outline how to combine multiple search condition predicates in a single WHERE clause to filter data with more granularity, as well as how to use the NOT operator to exclude, rather than include, rows that meet a given search condition.

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