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PostgreSQL 12

PostgreSQL 12

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Q1. Which of the following is a valid way to comment a line in a PostgreSQL 12 SQL script?
Q2. Which of the following is not a valid index type in PostgreSQL 12?
Q3. Which of the following statements is true about the SERIAL data type in PostgreSQL 12?
Q4. Which command is used to create a new schema in PostgreSQL 12?
Q5. Which command is used to revoke privileges from a user in PostgreSQL 12?
Q6. Which of the following is not a valid join type in PostgreSQL 12?
Q7. Which command is used to create a new user in PostgreSQL 12?
Q8. Which command is used to create an index on a table in PostgreSQL 12?
Q9. Which of the following is not a valid aggregation function in PostgreSQL 12?
Q10. Which command is used to modify the definition of an existing table in PostgreSQL 12?
Q11. Which of the following is not a valid constraint type in PostgreSQL 12?
Q12. Which command is used to add a new column to an existing table in PostgreSQL 12?
Q13. Which of the following is not a valid comparison operator in PostgreSQL 12?
Q14. Which command is used to create a new database in PostgreSQL 12?
Q15. Which of the following is a valid way to start a transaction in PostgreSQL 12?
Q16. Which of the following commands is used to insert data into a table in PostgreSQL 12?
Q17. What is the maximum number of columns a table can have in PostgreSQL 12?
Q18. Which command is used to update data in a table in PostgreSQL 12?
Q19. Which of the following is a valid way to concatenate two strings in PostgreSQL 12?
Q20. Which command is used to create a new sequence in PostgreSQL 12?
Q21. Which of the following is not a valid data type in PostgreSQL 12?
Q22. Which of the following is not a valid aggregation function in PostgreSQL 12?
Q23. Which command is used to rename a table in PostgreSQL 12?
Q24. Which of the following is not a valid data type conversion function in PostgreSQL 12?
Q25. Which of the following commands is used to delete a table in PostgreSQL 12?
Q26. Which command is used to grant privileges on a table to a user in PostgreSQL 12?
Q27. Which command is used to create a new table in PostgreSQL 12?
Q28. Which command is used to create a new trigger in PostgreSQL 12?
Q29. Which of the following is not a valid system catalog table in PostgreSQL 12?
Q30. Which command is used to delete data from a table in PostgreSQL 12?

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