SQL · Theory

vs MS SQL Server

Theory

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vs MS SQL Server

SQL Server is Microsoft’s RDBMS (T-SQL). MySQL uses LIMIT; classic SQL Server uses TOP (newer: OFFSET FETCH). Identity vs AUTO_INCREMENT. GETDATE() vs NOW(). SSMS is their GUI, not Workbench.

Trap — TOP 5 in MySQL. Trap: Workbench steps in a SQL Server answer.

On the example next to this theory: vs MS SQL Server: create two demo rows, then SELECT qty >= 2 ordered. Say which labels come back.

Exam tip

Same SQL ideas. LIMIT is MySQL; TOP is classic SQL Server.

vs MS SQL Server — sample query

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

Short notes

DefSQL Server = Microsoft. MySQL = open-source RDBMS. Both SQL.
RuleJOIN is the same. LIMIT vs TOP.
TrapMixing dialects.

-- vs MS SQL Server 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 MS SQL Server

vs MS SQL Server — sample query

Short notes

Questions

vs MS SQL Server

vs MS SQL Server — sample query

Short notes

Questions