hive 之解决csv中有英文逗号问题

原来：

CREATE EXTERNAL TABLE csvtable2(
    symbol string,
    tickSequence string,
    timeStamp string,
    tickdata STRUCT< BID3_SIZE: string, ASK10_SIZE: string>
)
ROW FORMAT DELIMITED FIELDS TERMINATED BY ','
STORED AS TEXTFILE
LOCATION '/mdtick/hk/csv';

变成：

CREATE EXTERNAL TABLE csvtable2(
    symbol string,
    tickSequence string,
    timeStamp string,
    tickdata string
)
ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.OpenCSVSerde'
WITH SERDEPROPERTIES (
    "separatorChar" = ",",
    "quoteChar" = """,
    "escapeChar" = "\"
)
STORED AS TEXTFILE
LOCATION '/mdtick/hk/csv';