[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [Y] LAST_DAY function  leaf nodes     finding      hierarchical queries  LEFT keyword, ANSI join syntax  less than (<) operator      self non-equi-joins  less than or equal to operator (<=)  LEVEL pseudocolumn, hierarchical queries  levels     hierarchical queries      listing      number of, finding  LIKE operator  list partitioning  literals, dates  local indexes  LOCALTIMESTAMP function  logical models compared to physical models, entities and  logical operators, WHERE clause