Hadoop 如何在pig拉丁语中使用foreach中的Filter运算符

我试图在foreach中使用

FILTER

操作符来过滤我的一些数据，但它抛出了一个错误。我正在使用以下查询：

ctm_pm_v1_stg = LOAD '/datalake/uhc/ei/pi_ara/hive/warehouse/ctm_pm.db/ctm_pm_t1' USING PigStorage ('\u0001') AS (lob:chararray,day_phnno:chararray,eve_phnno:chararray,mbr_name:chararray,hic_no:chararray,contract_no:chararray,ctm_risk_category:chararray);
ctm_pm_v1 = FOREACH ctm_pm_v1_stg {
fdata = FILTER ctm_pm_v1_stg by ctm_risk_category=='High';
GENERATE ctm_risk_category;
};

如果有人对此有什么想法，请帮助我。

---

提前感谢。

嵌套的FOREACH

仅适用于行李，但您的

关系（ctm\U pm\U v1\U stg）

没有任何行李。要解决此问题，只需删除嵌套零件并仅使用

过滤器stmt

ctm_pm_v1_stg = LOAD '/datalake/uhc/ei/pi_ara/hive/warehouse/ctm_pm.db/ctm_pm_t1' USING PigStorage ('\u0001') AS (lob:chararray,day_phnno:chararray,eve_phnno:chararray,mbr_name:chararray,hic_no:chararray,contract_no:chararray,ctm_risk_category:chararray);
fdata = FILTER ctm_pm_v1_stg by (ctm_risk_category=='High');
DUMP fdata;

---

Nested FOREACH

仅适用于行李，但您的

关系（ctm\U pm\U v1\U stg）

没有任何行李。要解决此问题，只需删除嵌套零件并仅使用

过滤器stmt

ctm_pm_v1_stg = LOAD '/datalake/uhc/ei/pi_ara/hive/warehouse/ctm_pm.db/ctm_pm_t1' USING PigStorage ('\u0001') AS (lob:chararray,day_phnno:chararray,eve_phnno:chararray,mbr_name:chararray,hic_no:chararray,contract_no:chararray,ctm_risk_category:chararray);
fdata = FILTER ctm_pm_v1_stg by (ctm_risk_category=='High');
DUMP fdata;

---

Nested FOREACH

仅适用于行李，但您的

关系（ctm\U pm\U v1\U stg）

没有任何行李。要解决此问题，只需删除嵌套零件并仅使用

过滤器stmt

ctm_pm_v1_stg = LOAD '/datalake/uhc/ei/pi_ara/hive/warehouse/ctm_pm.db/ctm_pm_t1' USING PigStorage ('\u0001') AS (lob:chararray,day_phnno:chararray,eve_phnno:chararray,mbr_name:chararray,hic_no:chararray,contract_no:chararray,ctm_risk_category:chararray);
fdata = FILTER ctm_pm_v1_stg by (ctm_risk_category=='High');
DUMP fdata;

---

Nested FOREACH

仅适用于行李，但您的

关系（ctm\U pm\U v1\U stg）

没有任何行李。要解决此问题，只需删除嵌套零件并仅使用

过滤器stmt

ctm_pm_v1_stg = LOAD '/datalake/uhc/ei/pi_ara/hive/warehouse/ctm_pm.db/ctm_pm_t1' USING PigStorage ('\u0001') AS (lob:chararray,day_phnno:chararray,eve_phnno:chararray,mbr_name:chararray,hic_no:chararray,contract_no:chararray,ctm_risk_category:chararray);
fdata = FILTER ctm_pm_v1_stg by (ctm_risk_category=='High');
DUMP fdata;