The ALTER DEFAULT SHADOW ALGORITHM syntax is used to alter a default shadow algorithm.
AlterDefaultShadowAlgorithm ::=
  'ALTER' 'DEFAULT' 'SHADOW' 'ALGORITHM' shadowAlgorithm 
shadowAlgorithm ::=
  'TYPE' '(' 'NAME' '=' shadowAlgorithmType ',' 'PROPERTIES' '(' ( 'key' '=' 'value' ( ',' 'key' '=' 'value' )* ) ')' ')'
    
shadowAlgorithmType ::=
  string
shadowAlgorithmType currently supports VALUE_MATCH, REGEX_MATCH and SIMPLE_HINT.ALTER DEFAULT SHADOW ALGORITHM TYPE(NAME="SIMPLE_HINT", PROPERTIES("shadow"="true", "foo"="bar");
ALTER, DEFAULT, SHADOW, ALGORITHM, TYPE, NAME, PROPERTIES
