To rename Address to Addr, we key in, MySQL : ALTER TABLE Customer CHANGE Address Addr char(50); Oracle : ALTER TABLE Customer RENAME COLUMN Address TO Addr; SQL Server : It is not possible to rename a column using the ALTER TABLE statement in SQL Server.n MySQL, the SQL syntax for ALTER TABLE Rename Column is, ALTER TABLE table_name Change column 1 column 2 [Data Type]; In Oracle, the syntax is, ALTER TABLE table_name RENAME COLUMN column 1 TO column 2;
Korea Efficiency The energy use, and hence efficiency of electricity production, is calculated on the basis of fuel movements and stock monitoring. The higher heating value (HHV) is used for this calculation. In Korea, almost all coal used for power generation is imported, mainly from Australia, Indonesia and China.
Eskom relies on coal fired power stations to produce approximately 90% of its electricity. Eskom uses over 90 million tons of coal per annum. Coal mining in South Africa is relatively cheap compared to the rest of the world.n mountainous countries, hydro electricity is an important source. However, in South Africa its most important role is the storage of electricity to meet unexpected demands or a sudden breakdown at a baseload power station.