✅ 🔤 A–Z of SQL Commands 🗄️💻⚡

A – ALTER
Modify an existing table structure (add/modify/drop columns).

B – BEGIN
Start a transaction block.

C – CREATE
Create database objects like tables, views, indexes.

D – DELETE
Remove records from a table.

E – EXISTS
Check if a subquery returns any rows.

F – FETCH
Retrieve rows from a cursor.

G – GRANT
Give privileges to users.

H – HAVING
Filter aggregated results (used with GROUP BY).

I – INSERT
Add new records into a table.

J – JOIN
Combine rows from two or more tables.

K – KEY (PRIMARY KEY / FOREIGN KEY)
Define constraints for uniqueness and relationships.

L – LIMIT
Restrict number of rows returned (MySQL/PostgreSQL).

M – MERGE
Insert/update data conditionally (mainly in SQL Server/Oracle).

N – NULL
Represents missing or unknown data.

O – ORDER BY
Sort query results.

P – PROCEDURE
Stored program in the database.

Q – QUERY
Request for data (general SQL statement).

R – ROLLBACK
Undo changes in a transaction.

S – SELECT
Retrieve data from tables.

T – TRUNCATE
Remove all records from a table quickly.

U – UPDATE
Modify existing records.

V – VIEW
Virtual table based on a query.

W – WHERE
Filter records based on conditions.

X – XML PATH
Generate XML output (mainly SQL Server).

Y – YEAR()
Extract year from a date.

Z – ZONE (AT TIME ZONE)
Convert datetime to specific time zone.

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