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goo day ,
Can you please explain me when and why to use drop table ?
for example this :
GREEN_SALES:
//Sales of product made from recycled materials
Load
CUSTOMER,
SALES_DATE,
QUANTITY
Resident 2009_SALES_DETAIL
Where Exists(RECYCLE_PRODUCT,PRODUCT_CODE);
Drop table TEMP_RECYCLE_PRODUCTS;
There are 2 tables, the TEMP_RECYCLE_PRODUCTS table is a temporary one because it is used to filter the first table only with existing products. Once the filtering is ended the TEMP_RECYCLE_PRODUCTS is deleted with a drop.
There are 2 tables, the TEMP_RECYCLE_PRODUCTS table is a temporary one because it is used to filter the first table only with existing products. Once the filtering is ended the TEMP_RECYCLE_PRODUCTS is deleted with a drop.