Index[A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] Unicode character strings UNION ALL set operation 2nd columns and union compatibility UNION set operation 2nd columns and JOIN and UNIQUE constraint UNIQUE IDENTIFIER data type UNIQUE integrity constraint UNIQUEIDENTIFIER data type universal qualifiers UPDATE command 2nd UPPER function 2nd USE command USE, opening databases UUID (Universal unique identifier) |