Skip to content

Refactor SQL queries and add comments #7

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Imran-imtiaz48 wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Refactor SQL queries and add comments #7

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 12 additions & 6 deletions index.sql
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,10 +1,16 @@
SELECT * from employees;
-- View all employees
SELECT *
FROM employees;

-- Analyze query performance for a specific employee
EXPLAIN ANALYZE
SELECT *
FROM employees
WHERE emp_no = 10004; -- Removed quotes if emp_no is numeric

EXPLAIN ANALYSE
SELECT * from employees WHERE emp_no = '10004';

-- Create an index on last_name for faster searches
CREATE INDEX idx_employees_last_name
on employees (last_name);
ON employees (last_name);

SHOW data_directory;
-- Check the data directory of the database
SHOW data_directory;