SQL functions are built into Oracle Database and are available for use in various appropriate SQL statements. Do not confuse SQL functions with user-defined functions written in PL/SQL. If you call a SQL function with an argument of a datatype other than the datatype expected by the SQL function, then Oracle attempts to convert the argument to the expected datatype before performing the SQL function. If you call a SQL function with a null argument, then the SQL function automatically returns null.
Marching. Marching refers to the organized, uniformed, steady and rhythmic walking forward, usually associated with military troops. Marching is often performed to march music, and often associated with military parades. Marching is part of basic training in the military in most countries. In most cases, marching uses a system of drill commands. Learning to march by obeying commands is considered a form of discipline.
edit this panel. Different types of marching bands. A marching band is made up of a group of individual musicians who play instruments like percussion and include movements like marching with music. Marching bands usually participate in outdoor events like sports competitions and indoor events like concerts. Marching bands are usually determined by the style, size and functions of show and the type of instruments they usually incorporate and in the events they participate.