hadoop - 创建具有Serde格式和额外列的外部表-HIVE

Question

我正在尝试将txt文件导入到带有 hive 中额外列的外部表中，如下所示:

CREATE EXTERNAL TABLE IF NOT EXISTS bs.tbl_bt(
tp_registro string,
seq string,
num_a string,
dt_chamada string,
hr_chamada string,
num_b string,
pt_interconect string,
dur_rel_chamada string,
dur_tar_chamada string,
tp_servico string,
vl_liq_chamada string,
vl_brt_chamada string,
reserva string,
'${hiveconf:tez.task.operadora}' as operadora string)
ROW FORMAT SERDE 'org.apache.hadoop.hive.serde2.RegexSerDe'
WITH SERDEPROPERTIES (input.regex = (.{1})(.{10})(.{21})(.{8})(.{6})(.{20})(.{10})(.{7})(.{7})(.{2})(.{11})(.{11})(.{29}).*)
STORED AS TEXTFILE
LOCATION '/gr/Fi/B/${hiveconf:tez.task.operadora}';

我究竟做错了什么？

Answer 1

定义列时，Hive DDL不包含AS

CREATE [TEMPORARY] [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name    -- (Note: TEMPORARY available in Hive 0.14.0 and later)
 [(col_name data_type [column_constraint_specification] [COMMENT col_comment], ... [constraint_specification])] 

因此，尝试

'${hiveconf:tez.task.operadora}' STRING 

或者，如果您确实需要使该列始终保持可操作状态，则删除hiveconf变量

https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-CreateTableCreate/Drop/TruncateTable

也许您正在混淆CTAS语句，在创建表时可以在其中选择一列作为其他名称