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"area_id":"330106"} {"order_id":"202103241606060001", "order_channel":"appShop", "order_time":"2021-03-24 16:06:06", "pay_amount":"200.00", "real_pay":"180
10:02:03', '0001', 'Alice', '330106'), ('202103251202020001', 'miniAppShop', '2021-03-25 12:02:02', '60.00', '60.00', '2021-03-25 12:03:00'
.builder() .appName("test_spark") .getOrCreate(); ICredentialProvider
password) .mode(SaveMode.Append) .save() SaveMode 有四种保存类型： ErrorIfExis：如果已经存在数据，则抛出异常。 Overwrite：如果已经存在数据，则覆盖原数据。 Append：如果已经存在数据，则追加保存。 Ign
ORDER BY time_attr [asc|desc]) AS rownum FROM table_name) -- relation applied windowing TVF WHERE (rownum = 1 | rownum <=1 | rownum < 2) [AND conditions]
10:02:03', '0001', 'Alice', '330106'), ('202103251202020001', 'miniAppShop', '2021-03-25 12:02:02', '60.00', '60.00', '2021-03-25 12:03:00'
'2021-03-24 10:02:03','0001','Alice','330106'), ('202103241206060001','appShop','2021-03-24 12:06:06','200.00','180.00','2021-03-24 16:10:06','0002'
Driver") .mode(SaveMode.Append) .save() SaveMode 有四种保存类型： ErrorIfExis：如果已经存在数据，则抛出异常。 Overwrite：如果已经存在数据，则覆盖原数据。 Append：如果已经存在数据，则追加保存。 Ign
数据格式 支持以下数据格式。 Parquet：DLI支持读取不压缩、snappy压缩、gzip压缩的parquet数据。 CSV：DLI支持读取不压缩、gzip压缩的csv数据。 ORC：DLI支持读取不压缩、snappy压缩的orc数据。 JSON：DLI支持读取不压缩、gzip压缩的json数据。
'2021-03-24 10:02:03','0001','Alice','330106'), ('202103251606060001','appShop','2021-03-24 12:06:06','200.00','180.00','2021-03-24 16:10:06','0002'
[asc|desc][, col2 [asc|desc]...]) AS rownum FROM table_name) -- relation applied windowing TVF WHERE rownum <= N [AND conditions] 注意事项 Flink只支持在滚动，滑动和累计窗口表值函数后进行窗口
"area_id":"330106"} {"order_id":"202103241606060001", "order_channel":"appShop", "order_time":"2021-03-24 16:06:06", "pay_amount":"200.00", "real_pay":"180
"area_id":"330106"} {"order_id":"202103241606060001", "order_channel":"appShop", "order_time":"2021-03-24 16:06:06", "pay_amount":"200.00", "real_pay":"180
WHENEVER, WHERE, WIDTH_BUCKET, WINDOW, WITH, WITHIN, WITHOUT, WORK, WRAPPER, WRITE, XML, YEAR, ZONE 父主题： SQL语法约束与定义
"area_id":"330106"} {"order_id":"202103241606060001", "order_channel":"appShop", "order_time":"2021-03-24 16:06:06", "pay_amount":"200.00", "real_pay":"180
instr1(string <str1>, string <str2>[, bigint <start_position>[, bigint <nth_appearance>]]) BIGINT instr1函数用于计算子串str2在字符串str1中的位置。 initcap initcap(string
instr1(string <str1>, string <str2>[, bigint <start_position>[, bigint <nth_appearance>]]) BIGINT instr1函数用于计算子串str2在字符串str1中的位置。 initcap initcap(string
SELECT ... FROM L [LEFT|RIGHT|FULL OUTER] JOIN R -- L and R are relations applied windowing TVF ON L.window_start = R.window_start AND L.window_end
"area_id":"330106"} {"order_id":"202103241606060001","order_channel":"appShop","order_time":"2021-03-24 16:06:06","pay_amount":200.0,"real_pay":180
inner Window TVF are optional in the select clause. However, if they appear in the clause, they need to be aliased to prevent name conflicting
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