DROP TABLE table1; DROP TABLE table2; DROP TABLE table3; CREATE TABLE table1 (a STRING, b TIMESTAMP) STORED AS TEXTFILE; DESCRIBE table1; DESCRIBE EXTENDED table1; CREATE TABLE IF NOT EXISTS table1 (a STRING, b TIMESTAMP) STORED AS TEXTFILE; CREATE TABLE IF NOT EXISTS table2 (a STRING, b TIMESTAMP) STORED AS TEXTFILE; DESCRIBE table2; DESCRIBE EXTENDED table2; CREATE TABLE table3 (a STRING, b STRING, c TIMESTAMP) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t' STORED AS TEXTFILE; DESCRIBE table3; DESCRIBE EXTENDED table3; DROP TABLE table1; DROP TABLE table2; DROP TABLE table3;