单项选择题
A.CALL getratews11('USA','CANADA')
B.CALL expenses.getratews11('USA','CANADA')
C.SELECT getratews11('USA','CANADA') FROM expenses
D.SELECT * FROM TABLE(getratews11('USA','CANADA')) AS convert_currency
单项选择题 Given the following tables: CONTINENTS ID NAME COUNTRIES 1 Antarctica 0 2 Africa 53 3 Asia 47 4 Australia 14 5 Europe 43 6 North America 23 7 South America 12 REGION ID LOCATION 1 East 2 West How many rows would be returned using the following statement? SELECT location FROM continents, region（）
单项选择题 Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?（）
单项选择题 In which of the following situations should correlation names be used?（）