Do you have knowledge of SQL? Can you write a query to fetch student names?
A practical coding question testing SQL proficiency with string matching.
Why Interviewers Ask This
SQL is essential for data retrieval. Interviewers test basic querying skills and the ability to filter data using string operators. This confirms the candidate can interact with databases effectively.
How to Answer This Question
Write the SELECT statement clearly. Use the LIKE operator with wildcards for substring matching. Specify the table and column names logically. Explain the query logic briefly after writing it.
Key Points to Cover
- SELECT clause
- LIKE operator usage
- Wildcard placement
- Table reference
Sample Answer
SELECT name FROM students WHERE name LIKE '%nee%'; This query selects the 'name' column from the 'students' table where the name contains the substring 'nee'. The percent signs act as wildcards to match any characters be…
Common Mistakes to Avoid
- Using = instead of LIKE
- Missing wildcards
- Wrong column/table names
- Case sensitivity issues
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