MySQL
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  1. How to replicate a string for a specified number of times in MySQL?

  2. What MySQL would return if we refer a user variable which is not assigned any value explicitly?

  3. What happens if I will assign a value to a MySQL user variable using a statement that returns multiple rows?

  4. How can we use SET statement to assign a SELECT result to a MySQL user variable?

  5. What are the properties of MySQL user variables?

  6. How can I restore a file created by mysqldump?

  7. How can we take a backup of a particular table from a database by using mysqldump client program?

  8. What are the similarities and differences between MySQL ORD() and ASCII() functions?

  9. What is MySQL OCTET_LENGTH() function?

  10. How can I use MySQL OCTET_LENGTH() function to count the number of characters stored in a data column?

  11. How can we take a backup of all the databases by using mysqldump client program?

  12. How can I restore a database dumped by mysqldump?

  13. How MySQL LOCATE() function is different from its synonym functions i.e. POSITION() and INSTR() functions?

  14. How can I restore multiple databases or all databases dumped by mysqldump?

  15. How to copy tables or databases from one MySQL server to another MySQL server?

  16. What MySQL TRIM() function returns if 1st argument(i.e. BOTH, LEADING, TRAILING) is not specified?

  17. How can we extract a substring from a string in MySQL?

  18. In what cases, we cannot use MySQL TRIM() function?

  19. What is MySQL MAKE_SET() function?

  20. How can we extract a substring from the value of a column in MySQL table?
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