Which query is faster to execute - sql

Question

Following are two options to query CTE and NFSE data. Pls advise !
A similar approach may have to be used in many places.
I would like you to verify them and suggest, if there are better options.
Option 1: Query CTE with all necessary joins UNION with query on NFSe with all necessary joins
SELECT DISTINCT 'CTE' as docTypeID
, cte.isqn_mstr_cd as ctePk
, cte.ct_e_cd
, cter.stat_desc
, awb.CREATE_DT
, awb.AWB_NBR
, awb.SHPR_NM
, awbs.DEST_LOC_CD
, nfe.NT_FSCL_CD
, nfe.FSCL_DOC_NBR
FROM cte_identity_master cte
INNER JOIN cte_response_detail cter ON (cte.isqn_mstr_cd = cter.isqn_mstr_cd)
LEFT JOIN match_ref_awb mawb ON (cte.isqn_ref_cd = mawb.isqn_mstr_cd)
LEFT JOIN awb_cust_master awb ON (mawb.awb_nbr = awb.awb_nbr)
LEFT JOIN awb_shipment_detail awbs ON (awb.awb_nbr = awbs.awb_nbr)
LEFT JOIN match_ref_nfe mnfe ON (cte.isqn_ref_cd = mnfe.isqn_mstr_cd)
LEFT JOIN nfe_identity_master nfe ON (mnfe.nt_fscl_cd = nfe.nt_fscl_cd)
UNION
SELECT DISTINCT 'NFSE' as docTypeID
, nfse.isqn_mstr_cd as nfsePk
, nfse.rp_s_id
, nfser.stat_desc
, awb.CREATE_DT
, awb.AWB_NBR
, awb.SHPR_NM
, awbs.DEST_LOC_CD
, nfe.NT_FSCL_CD
, nfe.FSCL_DOC_NBR
FROM nfse_request_detail nfse
INNER JOIN nfse_response_detail nfser ON (nfse.isqn_mstr_cd = nfser.isqn_mstr_cd)
LEFT JOIN match_ref_awb mawb ON (nfse.isqn_ref_cd = mawb.isqn_mstr_cd)
LEFT JOIN awb_cust_master awb ON (mawb.awb_nbr = awb.awb_nbr)
LEFT JOIN awb_shipment_detail awbs ON (awb.awb_nbr = awbs.awb_nbr)
LEFT JOIN match_ref_nfe mnfe ON (nfse.isqn_ref_cd = mnfe.isqn_mstr_cd)
LEFT JOIN nfe_identity_master nfe ON (mnfe.nt_fscl_cd = nfe.nt_fscl_cd)
;
Option 2: Use Union of CTe and NFSe first and then apply joins with other tables
SELECT ctnf.*
, awb.CREATE_DT
, awb.AWB_NBR
, awb.SHPR_NM
, awbs.DEST_LOC_CD
, nfe.NT_FSCL_CD
, nfe.FSCL_DOC_NBR
FROM (
SELECT DISTINCT 'CTE' as docTypeID
, cte.isqn_mstr_cd as docPk
, cte.ct_e_cd as docNbr
, cter.stat_desc as docStat
, cte.isqn_ref_cd as matchRef
FROM cte_identity_master cte
INNER JOIN cte_response_detail cter ON (cte.isqn_mstr_cd = cter.isqn_mstr_cd)
UNION
SELECT DISTINCT 'NFSE' as docTypeID
, nfse.isqn_mstr_cd as nfsePk
, nfse.rp_s_id
, nfser.stat_desc
, nfse.isqn_ref_cd
FROM nfse_request_detail nfse
INNER JOIN nfse_response_detail nfser ON (nfse.isqn_mstr_cd = nfser.isqn_mstr_cd)
) ctnf
LEFT JOIN match_ref_awb mawb ON (ctnf.matchRef = mawb.isqn_mstr_cd)
LEFT JOIN awb_cust_master awb ON (mawb.awb_nbr = awb.awb_nbr)
LEFT JOIN awb_shipment_detail awbs ON (awb.awb_nbr = awbs.awb_nbr)
LEFT JOIN match_ref_nfe mnfe ON (ctnf.matchRef = mnfe.isqn_mstr_cd)
LEFT JOIN nfe_identity_master nfe ON (mnfe.nt_fscl_cd = nfe.nt_fscl_cd)
;
Both approaches of the above will have following Where Clause:
WHERE lower(cte.sttn_cd) = lower(:stationId)
and (:documentType is null or lower(:documentType) = 'cte')
and (:shipperName is null or lower(awb.shipperNm) like lower(concat(concat('%',:shipperName),'%')))
and (:awbCreated is null or to_char(awb.createDt, 'MM-DD-YYYY') = :awbCreated)
and (:awbNumber is null or m2.awbNbr like concat(concat('%',:awbNumber),'%'))
and (:serviceType = 0 or awbs.baseServiceCd = :serviceType)
and (:commitmentDate is null or awbs.commitmentDate = :commitmentDate)
and (:ursa is null or lower(awbs.ursaCd) like lower(concat(concat('%',:ursa),'%')))
and (:destLocationId is null or lower(awbs.destLocCd) like lower(concat(concat('%',:destLocationId),'%')))
and (:nfeNumber is null or nfe.fiscalDocumentNumber like concat(concat('%',:nfeNumber),'%'))
PLEASE SUGGEST - Output of these two approaches to get data which one will be better to fix at Java End to retrieve the data.
Any help will be greatly appreciated. Also suggest if there is any other better query apart from these two!