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.
Coal is a fossil fuel that is burned as an energy source, which results in emissions such as carbon dioxide, nitrogen, and sulfur. Coal use is associated with waste products both from the mining process to acquire the coal and also from the actual use of coal itself. Hydroelectric energy does not involve waste, but does pose potential problems to waterways.