Row validation for DB2 to Bigquery not supported

[Raniksingh]

Command:
data-validation -v validate row
-sc DB2_CONN
-tc BQ_CONN
-tbls POCDB2.customer=rite-aid-371612.bq_dvt.customer_db2_df
--primary-keys custid
--concat custname,age,phonenum,birthdate,order_amount,load_ts
--bq-result-handler rite-aid-371612.data_validator.results

Error :
sqlalchemy.exc.ProgrammingError: (ibm_db_dbi.ProgrammingError) ibm_db_dbi::ProgrammingError: SQLNumResultCols failed: [IBM][CLI Driver][DB2/LINUXX8664] SQL0461N A value with data type "SYSIBM.INTEGER" cannot be CAST to type "SYSIBM.CLOB". SQLSTATE=42846 SQLCODE=-461

Query Generated: Instead of casting to string or varchar its being cast to CLOB
SELECT CAST(t5.age AS CLOB) AS cast__age, CAST(t5.birthdate AS CLOB) AS cast__birthdate, CAST(t5.order_amount AS CLOB) AS cast__order_amount, CAST(t5.load_ts AS CLOB) AS cast__load_ts
FROM test.table AS t5

[Raniksingh]

Fix provided in PR #800