Column - Name of the column in question. The above query shows all tables that have more than one index with the same leading column. These indexes can cause queries to use an inappropriate indexes; in other words, Oracle will use the index that was created most recently if two indexes are of equal ranking.
Some different types of gases are argon, carbon dioxide, hydrogen,  helium, oxygen, nitrogen, nitrous oxide, propane and propylene. Carbon dioxide is used for fermentation, â¦ and oxygen and nitrogen  are what makes up the Earth's atmosphere.1 person found this useful. Jan C.tmosphere contains roughly (by volume) 78.09% nitrogen, 20.95%oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases.
You might hear the term  vapor .. Vapor and gas mean the same thing. The word vapor is used to describe gases that are usually liquids at room temperature. Good examples of these types of liquids include water (H 2 O) and mercury (Hg). They get the vapor title when they are in a gaseous phase. You will probably hear the term âwater vaporâ which means water in a gas state. Compounds such as carbon dioxide (CO 2) are usually gases at room temperature. Scientists will rarely talk about carbon dioxide vapor. Gases hold huge amounts of energy and their molecules are spread out as much as possible.