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Results tagged with sql
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user 2945
Structured Query Language is a language for interacting with relational databases. Read the tag wiki's guidelines for requesting SQL reviews: 1) Provide context, 2) Include the schema, 3) If asking about performance, include indexes and the output of EXPLAIN SELECT.
8
votes
Accepted
Database schema for a school
Additional Observations:
Consider a new lookup table Phonetype (e.g. Mobile, Home, Work, etc.).
Create PersonPhone table that will have the PhoneTypeId, PersonId, and PersonType (student, faculty …
- 377
6
votes
1
answer
530
views
Retrieving the most recent communication from a user
You can see a list of these messages by running the following SQL statement:
SELECT
u2.user_name AS Sender,
u1.user_name AS Receiver,
m.body,
m.time
FROM
messages m
JOIN …
- 377