The ADD SHARDING HINT DATABASE_VALUE syntax is used to add sharding database value to specified table for current connection.
AddShardingHintDatabaseValue ::=
  'ADD' 'SHARDING' 'HINT' 'DATABASE_VALUE' shardingHintDatabaseValueDefination
  
  shardingHintDatabaseValueDefination ::=
    tableName '=' databaseShardingValue
  tableName ::=
    identifier
  databaseShardingValue ::=
    int
ADD SHARDING HINT DATABASE_VALUE t_order = 100;
ADD, SHARDING, HINT, DATABASE_VALUE
