EXPLAIN PLAN_TABLE in database consists of multiple columns. Few common column names − OPERATOR_NAME, OPERATOR_ID, PARENT_OPERATOR_ID, LEVEL and POSITION, etc.COLUMN SEARCH value tells the starting position of column engine operators.ROW SEARCH value tells the starting position of row engine ...
In Haskell such identifiers can be used as infix operators (as we will see below). Otherwise (.) is defined as any other function. Please also note how close the syntax is to the original mathematical definition.Using this operator we can easily create a composite function that first doubles...