anchor.diff:      : KEY_BLOCK_SIZE EQ_? NUMBER_ | indexType_ | WITH PARSER identifier_ | COMMENT STRING_ | VISIBLE | INVISIBLE
       ;
   
  -constraintDefinition_
  -    : (CONSTRAINT ignoredIdentifier_?)? (primaryKeyOption_ | uniqueOption_ | foreignKeyOption_)
  -    ;
  -
   primaryKeyOption_
       : primaryKey indexType_? columnNames indexOption_*
       ;
  
positive.code:     : TRUNCATE TABLE? tableName
      ;
  
  createDefinitions_
      : createDefinition_ (COMMA_ createDefinition_)*
      ;
  
negative.code: import Symbol, Keyword, Literals, BaseRule;
  
  createTable
      : CREATE temporaryClause_ TABLE existClause_ tableName (createDefinitionClause_ | createLikeClause_)
      ;
  
  createIndex
  