SQL DISTINCT clause is used to remove duplicate records. SELECT DISTINCT returns distinct(different) values. DISTINCT can be used with aggregate functions: COUNT, AVG, MAX, MIN. Syntax: SQL SELECT DISTINCT based on one column You can SELECT DISTINCT values from one column in a table. Below is the syntax. SQL SELECT DISTINCT based on multiple columns …
Month: April 2020
The SELECT statement in SQL is used to retrieve data from a database. Mostly used to retrieve all data in a table and data from desired table columns (fields). SELECT Syntax In the above syntax, you are selecting data from exact columns or fields indicated as column1, column2, column3 and so on. To select all …
A Database is a collection of unknown figures known as data. Databases are usually organized and un-organized data. Databases also contain rows(record) and columns(field). Company’s both large and small rely heavily on databases to power their applications. Databases store large amounts of data such as: user id’s, usernames, email addresses, healthcare data, product information, sales …
SQL stands for Structured Query Language. SQL is used to store, query, modify, manipulate and retrieve data stored in a relational database. Usually pronounced as “ess-que-ell”. According to ANSI (American National Standards Institute), it is the language for relational database management systems. All relational database systems (RDBMS) accept the use of SQL (MS Access, MySQL, …
In this blog, we will learn most asked interview questions and answers as regards to Microsoft Power BI. What is Power BI Power BI is an analytical tool for visualizing data by creating reports, dashboards, charts, graphs, data modelling and so on to enable user interpretation of data. Data can be imported into and exported …