CASE
WHEN T1.IDTYPE=01 AND LENGTH(TRIM(T1.IDNO))=15 THEN '19'||SUBSTR(T1.IDNO,7,6)
WHEN T1.IDTYPE=01 AND LENGTH(TRIM(T1.IDNO))=18 THEN SUBSTR(T1.IDNO,7,8)
ELSE '2020-01-01'
END
CASE
WHEN T1.IDTYPE=01 AND LENGTH(TRIM(T1.IDNO))=15 THEN '19'||SUBSTR(T1.IDNO,7,6)
WHEN T1.IDTYPE=01 AND LENGTH(TRIM(T1.IDNO))=18 THEN SUBSTR(T1.IDNO,7,8)
ELSE '2020-01-01'
END