What is the output of INSTR('me@test.com', '@')?

The output of the INSTR function in this context is determined by its purpose, which is to return the position of a specified character or substring within a given string. In the example provided, the INSTR function is looking for the position of the '@' character in the string 'me@test.com'.

To understand how the function works, we start counting the position from 1, which is common in programming and SQL. The breakdown of the string 'me@test.com' is as follows:

1. 'm' - Position 1
2. 'e' - Position 2
3. '@' - Position 3
4. 't' - Position 4
5. 'e' - Position 5
6. 's' - Position 6
7. 't' - Position 7
8. '.' - Position 8
9. 'c' - Position 9
10. 'o' - Position 10
11. 'm' - Position 11

Given this breakdown, the '@' character is located at position 3. Therefore, the INSTR function correctly returns 3 when querying the position of '@' in the string 'me@test.com'. This aligns perfectly with the