2.7.1 Function

Format

search-condition::={[NOT] {(search-condition)|predicate}
  |search-condition OR{(search-condition)|predicate}
  |search-condition AND{(search-condition)|predicate}
predicate::={NULL-predicate|IN-predicate|LIKE-predicate|XLIKE-predicate|SIMILAR-predicate|BETWEEN-predicate|comparison-predicate|quantified-predicate|EXISTS-predicate|logical-predicate|structured-repetition-predicate}