Which command creates a new table?
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Which command creates a new table?
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- Explain the difference between truncating a table and deleting a table.Which of the following is a valid table name? a. 9NEWTABLE b. DATE9 c. NEWTABLE d. None of the above are valid table names.Which of the following is not a correct statement? A table can be modified only if it doesn’t contain any rows of data. The maximum number of characters in a table name is 30. You can add more than one column at a time to a table. You can’t recover data contained in a table that has been truncated.
- Which of the following is a correct statement? You can restore the data deleted with the DROP COLUMN clause, but not the data deleted with the SET UNUSED clause. You can’t create empty tables—all tables must contain at least three rows of data. A table can contain a maximum of 1000 columns. The maximum length of a table name is 265 characters.Which of the following symbols is used in a SELECT clause to display all columns from a table? / & * "How do you add data from an existing table to another table?
- Which of the following statements is correct? A table can contain a maximum of only one column marked as unused. You can delete a table by removing all columns in the table. Using the SET UNUSED clause allows you to free up storage space used by a column. None of the above statements are correct.What is the maximum number of PRIMARY KEY constraints allowed for a table? a. 1 b. 2 c. 30 d. 255Which of the following commands drops any columns marked as unused from the SECUSTOMERORDERS table? DROP COLUMN FROM secustomerorders WHERE column_status = UNUSED ALTER TABLE secustomerorders DROP UNUSED COLUMNS; ALTER TABLE secustomerorders DROP (unused); DROP UNUSED COLUMNS;