ALTER TABLE TBGRADE ADD ECOM01 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM02 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM03 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM04 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM05 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM06 VARCHAR(10);	
ALTER TABLE TBGRADE ADD ECOM07 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM08 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM09 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM10 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM11 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM12 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM13 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM14 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM15 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM16 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM17 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM18 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM19 VARCHAR(10); 
ALTER TABLE TBGRADE ADD ECOM20 VARCHAR(10);