MySQL
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  1. How OLD and NEW keywords enable us to access columns in row affected bya trigger?

  2. How Can we use MySQL DISTINCT clause with WHERE and LIMIT clause?

  3. How can I get the records from MySQL table in result set in a particular way?

  4. What are the several ways to add comments in MySQL query?

  5. How can I check the tables of databases other than current database?

  6. Why do we need to change the delimiter for creating a trigger?

  7. How can we get the summary output of a column in MySQL result set itself?

  8. How can we check the list of all triggers in a database?

  9. How can we get the metadata of triggers?

  10. How can we use INFORMATION_SCHEMA to get the details about triggers in a particular database?

  11. How we can find all the triggers associated with a particular MySQL table?

  12. What are the privileges required to use triggers?

  13. How can we count a number of unique values in a column in MySQL table?

  14. How can we get only unique values of a column in MySQL result set?

  15. What MySQL returns when we use DISTINCT clause with the column having multiple NULL values?

  16. How can we destroy a trigger?

  17. How MySQL evaluates the statement written on different lines?

  18. What is the use of ‘\c’ option while writing MySQL statements?

  19. What is MySQL trigger and triggering events related to it?

  20. How does ‘FOR EACH ROW’ work in the MySQL trigger?
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