Quloi SQL Developer Interview Questions and Answers

SQL is a programming language used for managing data in relational databases. Functions are reusable code blocks. Joins combine data from multiple tables. LIKE operator is used for pattern matching.

• SQL is a language for managing data in databases

• Functions are reusable code blocks

• Joins combine data from multiple tables

• LIKE operator is used for pattern matching, e.g. SELECT * FROM table WHERE column LIKE '%keyword%'

A set is a collection of unique values in SQL. Types of joins include inner, outer, left, right. Types of sets include union, intersect, except. WHERE is used for filtering rows, HAVING is used for filtering groups.

• Set is a collection of unique values in SQL

• Types of joins: inner, outer, left, right

• Types of sets: union, intersect, except

• WHERE is used for filtering rows

• HAVING is used for filtering groups