I have a table which contains information of an equipment location (where the equipment is installed as per Area and Sub-Area) sample of table is here. LocationId is the unique key.
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So, I have a very weird question and don’t know how to frame it well but I’ll to frame it well for everyone to understand.

I have collected data in 2 SQL Server tables:

i have collected data in 2 SQL Tables:

What does JOIN operator mean in SQL? Is this logical operator,arithmetical operator,relational operator or arithmetic-logic one? (multiple choice test)
The question is confusing me but I’d say it’s only the logical operator since I haven’t heard of relational ones.

I have a database with a products table and another table product_details which has additional product details but this table also has historical entries for each product.

If I have a set of transactions and want to pick out the full transaction of the largest or latest transaction, how do I identify and extract that transaction. e.g. given a table like
| ID | ItemID | Qty | Value | TranDate | CustID |
|——|——–|—–|———|———–|———-|
|11254 | a123 | 10 | 123.60 |10/01/2021 | FH12AH |
|11236 | a124 | 1 | 1123.60 |15/01/2021 | FH12AH |
|1123 | a129 | 9 | 23.10 |15/01/2021 | FH12AH |
|11237 | a125 | 5 | 213.10 |15/01/2021 | FH12AH |
|2134 | a123 | 3 | 37.08 |15/01/2021 | QB876G |
|3412 | b987 | 31 | 123.60 |23/01/2021 | QB876G |
|4321 | jp34 | 5 | 123.60 |30/01/2021 | JH8765 |
|4322 | a123 | 51 | 1123.60 |02/01/2021 | TT6548 |