创建库表的语句如下：
dbName = "dfs://trade"
tbName = "trade"
if(existsDatabase(dbName)){
dropDatabase(dbName)
}
db1 = database(, VALUE, 2020.01.01..2022.01.01)
db2 = database(, HASH, [SYMBOL, 5])
db = database(dbName, COMPO, [db1, db2], , "TSDB")
schemaTable = table(
array(SYMBOL, 0) as SecurityID,
array(SYMBOL, 0) as Market,
array(TIMESTAMP, 0) as TradeTime,
array(DOUBLE, 0) as TradePrice,
array(INT, 0) as TradeQty,
array(DOUBLE, 0) as TradeAmount,
array(INT, 0) as BuyNum,
array(INT, 0) as SellNum
)
db.createPartitionedTable(schemaTable, tbName, `TradeTime`SecurityID, {TradeTim:"delta"}, sortColumns=`SecurityID`TradeTime, keepDuplicates=ALL)
以`TradeTime`SecurityID为分区字段，我想提取某天某一个分区的所有股票的数据，请问应该怎么操作？
