sql question set 1

✅ SQL Question #1: Repeating Rows Based on Value

Input Table:

A single-column table with values:

Value
-----
1
2
3

Expected Output:

Each value should be repeated as many times as its value:



Value
-----
1
2
2
3
3
3

Question:

Write an SQL query to return each number repeated as many times as its value.
For example, 1 should appear once, 2 should appear twice, 3 thrice, and so on.

✅ SQL Question #2: Get the Start and End Cities per Journey

Input Table (TravelRoutes):

IdFromTo
1HyderabadBangalore
1BangaloreChennai
1ChennaiKochi
2BangaloreHyderabad
2HyderabadDelhi
3DelhiChennai

Expected Output:

IdFromTo
1HyderabadKochi
2BangaloreDelhi
3DelhiChennai

Question:

Write an SQL query to find the starting and ending cities of each journey (Id).

Assume the path is connected and ordered — you need to find the first From city and the last To city for each Id. 

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