vs SQL — SQL Technical Interview Questions & Answers

vs SQL

vs SQL

  • SQL is the language (SELECT, INSERT). MySQL is one database product that speaks SQL. Saying ‘I know SQL’ is not the same as ‘I administered MySQL users and dumps’.
  • You can know SQL and work in Postgres. You can use MySQL and still write bad SQL. Learn both: language + this engine’s types, LIMIT, backticks, AUTO_INCREMENT.
  • Trap: using them as synonyms in a strict viva.
  • On the example next to this theory: vs SQL: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Technical Interview Tip: SQL language, MySQL product. Postgres also speaks SQL.

Code Examples for vs SQL

vs SQL — sample query

-- vs SQL
CREATE TABLE demo (
  id INTEGER PRIMARY KEY,
  label TEXT NOT NULL,
  qty INTEGER DEFAULT 0
);
INSERT INTO demo (id, label, qty) VALUES
  (1, 'alpha', 2),
  (2, 'beta', 5);
SELECT label, qty FROM demo WHERE qty >= 2 ORDER BY qty DESC;

vs SQL: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

How to Explain vs SQL to an Interviewer

SQL vs MySQL?

Language vs software Postgres also uses SQL