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Hi all, I have a problem with views. When I use view in my query it really slows down(1.7seconds) If I use inside of view and add conditions and joins to it, it is really fast(0.7 milliseconds). I have no distinct/group/partition by in view so I have no idea why is this happening. I wrote queries and plans below. I would be very happy if you can help me. Best regards, Query without view; explain
analyze
select * from bss.prod_char_val left
join bss.prod
on prod.prod_id = prod_char_val.prod_id, bss.gnl_st prodstatus, bss.gnl_char left
join bss.gnl_char_lang
on gnl_char_lang.char_id = gnl_char.char_id, bss.gnl_char_val left
join bss.gnl_char_val_lang
on gnl_char_val_lang.char_val_id = gnl_char_val.char_val_id, bss.gnl_st charvalstatus
cross
join bss.prod prodentity0_ cross
join bss.cust custentity2_ where prod.st_id = prodstatus.gnl_st_id
and (prodstatus.shrt_code::text
= any (array['ACTV'::character
varying::text,
'PNDG'::character
varying::text]))
and gnl_char_val_lang.is_actv =
1::numeric
and gnl_char_lang.is_actv =
1::numeric
and gnl_char_lang.lang::text
= gnl_char_val_lang.lang::text
and prod_char_val.char_id = gnl_char.char_id
and prod_char_val.char_val_id = gnl_char_val.char_val_id
and prod_char_val.st_id = charvalstatus.gnl_st_id
and (charvalstatus.shrt_code::text
= any (array['ACTV'::character
varying::text,'PNDG'::character
varying::text]))
and gnl_char_val_lang.lang =
'en'
and (charvalstatus.shrt_code =
'xxx'
and prod_char_val.val =
'xxx'
or charvalstatus.shrt_code =
'xxx'
and prod_char_val.val =
'xxx')
and prodentity0_.prod_id = prod_char_val.prod_id
and custentity2_.party_id =
16424
and prodentity0_.cust_id = custentity2_.cust_id
order
by prodentity0_.prod_id
desc; Sort (cost=373.92..373.93 rows=1 width=19509) (actual time=0.098..0.098 rows=0 loops=1) Sort Key: prod_char_val.prod_id DESC Sort Method: quicksort Memory: 25kB -> Nested Loop (cost=2.57..373.91 rows=1 width=19509) (actual time=0.066..0.066 rows=0 loops=1) Join Filter: (gnl_char_val.char_val_id = gnl_char_val_lang.char_val_id) -> Nested Loop (cost=2.30..373.58 rows=1 width=19447) (actual time=0.066..0.066 rows=0 loops=1) -> Nested Loop (cost=2.15..373.42 rows=1 width=18571) (actual time=0.066..0.066 rows=0 loops=1) Join Filter: (gnl_char.char_id = gnl_char_lang.char_id) -> Nested Loop (cost=1.88..373.09 rows=1 width=18488) (actual time=0.066..0.066 rows=0 loops=1) -> Nested Loop (cost=1.73..372.92 rows=1 width=16002) (actual time=0.066..0.066 rows=0 loops=1) Join Filter: (charvalstatus.gnl_st_id = prod_char_val.st_id) -> Nested Loop (cost=1.29..214.51 rows=11 width=15914) (actual time=0.065..0.065 rows=0 loops=1) -> Nested Loop (cost=1.15..207.14 rows=44 width=15783) (actual time=0.065..0.065 rows=0 loops=1) -> Nested Loop (cost=0.72..180.73 rows=44 width=9586) (actual time=0.065..0.065 rows=0 loops=1) -> Seq Scan on gnl_st charvalstatus (cost=0.00..10.61 rows=1 width=131) (actual time=0.064..0.065 rows=0 loops=1) Filter: (((shrt_code)::text = ANY ('{ACTV,PNDG}'::text[])) AND ((shrt_code)::text = 'xxx'::text)) Rows Removed by Filter: 307 -> Nested Loop (cost=0.72..169.68 rows=44 width=9455) (never executed) -> Index Scan using idx_cust_party_id on cust custentity2_ (cost=0.29..8.31 rows=1 width=3258) (never executed) Index Cond: (party_id = '16424'::numeric) -> Index Scan using idx_prod_cust_id on prod prodentity0_ (cost=0.43..160.81 rows=57 width=6197) (never executed) Index Cond: (cust_id = custentity2_.cust_id) -> Index Scan using pk_prod on prod (cost=0.43..0.60 rows=1 width=6197) (never executed) Index Cond: (prod_id = prodentity0_.prod_id) -> Index Scan using gnl_st_pkey on gnl_st prodstatus (cost=0.15..0.17 rows=1 width=131) (never executed) Index Cond: (gnl_st_id = prod.st_id) Filter: ((shrt_code)::text = ANY ('{ACTV,PNDG}'::text[])) -> Index Scan using idx_prod_char_val_prod_id on prod_char_val (cost=0.44..14.38 rows=2 width=88) (never executed) Index Cond: (prod_id = prod.prod_id) Filter: (((val)::text = 'xxx'::text) OR ((val)::text = 'xxx'::text)) -> Index Scan using gnl_char_pkey on gnl_char (cost=0.14..0.16 rows=1 width=2486) (never executed) Index Cond: (char_id = prod_char_val.char_id) -> Index Scan using idx_gnl_char_lang_char_id on gnl_char_lang (cost=0.27..0.32 rows=1 width=83) (never executed) Index Cond: (char_id = prod_char_val.char_id) Filter: ((is_actv = '1'::numeric) AND ((lang)::text = 'en'::text)) -> Index Scan using gnl_char_val_pkey on gnl_char_val (cost=0.15..0.17 rows=1 width=876) (never executed) Index Cond: (char_val_id = prod_char_val.char_val_id) -> Index Scan using idx_gcvl_char_val_id on gnl_char_val_lang (cost=0.28..0.32 rows=1 width=56) (never executed) Index Cond: (char_val_id = prod_char_val.char_val_id) Filter: ((is_actv = '1'::numeric) AND ((lang)::text = 'en'::text)) Planning time: 12.275 ms Execution time: 0.770 ms Query with view; explain
analyze
select * from bss.prod prodentity0_ cross
join bss.v_prod_char_val vprodcharv1_ cross
join bss.cust custentity2_ where vprodcharv1_.lang =
'en'
and (vprodcharv1_.shrt_code =
'xxx'
and vprodcharv1_.val =
'xxx'
or vprodcharv1_.shrt_code =
'xxx'
and vprodcharv1_.val =
'xxx')
and prodentity0_.prod_id = vprodcharv1_.prod_id
and custentity2_.party_id =
16424
and prodentity0_.cust_id = custentity2_.cust_id
order
by prodentity0_.prod_id
desc; Sort (cost=19850.34..19850.34 rows=1 width=9616) (actual time=1661.094..1661.095 rows=6 loops=1) Sort Key: prodentity0_.prod_id DESC Sort Method: quicksort Memory: 31kB -> Nested Loop (cost=6.72..19850.33 rows=1 width=9616) (actual time=527.507..1661.058 rows=6 loops=1) Join Filter: (prodentity0_.cust_id = custentity2_.cust_id) Rows Removed by Join Filter: 98999 -> Index Scan using idx_cust_party_id on cust custentity2_ (cost=0.29..8.31 rows=1 width=3258) (actual time=0.007..0.008 rows=1 loops=1) Index Cond: (party_id = '16424'::numeric) -> Nested Loop (cost=6.43..19841.41 rows=49 width=6352) (actual time=0.066..1644.202 rows=99005 loops=1) -> Nested Loop (cost=6.00..19812.00 rows=49 width=161) (actual time=0.061..1347.225 rows=99005 loops=1) Join Filter: (gnl_char_val.char_val_id = gnl_char_val_lang.char_val_id) -> Nested Loop (cost=5.72..19795.69 rows=49 width=162) (actual time=0.055..1110.850 rows=99005 loops=1) -> Nested Loop (cost=5.58..19787.60 rows=49 width=142) (actual time=0.048..972.595 rows=99005 loops=1) -> Nested Loop (cost=5.43..19754.45 rows=198 width=149) (actual time=0.045..831.933 rows=101354 loops=1) -> Nested Loop (cost=5.00..19375.29 rows=198 width=128) (actual time=0.038..436.324 rows=101354 loops=1) -> Nested Loop (cost=4.85..19241.37 rows=799 width=122) (actual time=0.032..179.888 rows=188944 loops=1) -> Nested Loop (cost=4.29..15.95 rows=1 width=46) (actual time=0.014..0.044 rows=1 loops=1) -> Seq Scan on gnl_char (cost=0.00..6.83 rows=1 width=20) (actual time=0.006..0.034 rows=1 loops=1) Filter: ((shrt_code)::text = 'xxx'::text) Rows Removed by Filter: 225 -> Bitmap Heap Scan on gnl_char_lang (cost=4.29..9.12 rows=1 width=26) (actual time=0.006..0.008 rows=1 loops=1) Recheck Cond: (char_id = gnl_char.char_id) Filter: ((is_actv = '1'::numeric) AND ((lang)::text = 'en'::text)) Rows Removed by Filter: 1 Heap Blocks: exact=1 -> Bitmap Index Scan on idx_gnl_char_lang_char_id (cost=0.00..4.29 rows=2 width=0) (actual time=0.003..0.003 rows=2 loops=1) Index Cond: (char_id = gnl_char.char_id) -> Index Scan using idx_prod_char_val_v02 on prod_char_val (cost=0.56..19213.05 rows=1237 width=88) (actual time=0.018..140.837 rows=188944 loops=1) Index Cond: (char_id = gnl_char_lang.char_id) Filter: (((val)::text = 'xxx'::text) OR ((val)::text = 'xxx'::text)) Rows Removed by Filter: 3986 -> Index Scan using gnl_st_pkey on gnl_st charvalstatus (cost=0.15..0.17 rows=1 width=11) (actual time=0.001..0.001 rows=1 loops=188944) Index Cond: (gnl_st_id = prod_char_val.st_id) Filter: ((shrt_code)::text = ANY ('{ACTV,PNDG}'::text[])) Rows Removed by Filter: 0 -> Index Scan using pk_prod on prod (cost=0.43..1.91 rows=1 width=21) (actual time=0.003..0.003 rows=1 loops=101354) Index Cond: (prod_id = prod_char_val.prod_id) -> Index Scan using gnl_st_pkey on gnl_st prodstatus (cost=0.15..0.17 rows=1 width=5) (actual time=0.001..0.001 rows=1 loops=101354) Index Cond: (gnl_st_id = prod.st_id) Filter: ((shrt_code)::text = ANY ('{ACTV,PNDG}'::text[])) Rows Removed by Filter: 0 -> Index Scan using gnl_char_val_pkey on gnl_char_val (cost=0.15..0.17 rows=1 width=20) (actual time=0.001..0.001 rows=1 loops=99005) Index Cond: (char_val_id = prod_char_val.char_val_id) -> Index Scan using idx_gcvl_char_val_id on gnl_char_val_lang (cost=0.28..0.32 rows=1 width=14) (actual time=0.001..0.002 rows=1 loops=99005) Index Cond: (char_val_id = prod_char_val.char_val_id) Filter: ((is_actv = '1'::numeric) AND ((lang)::text = 'en'::text)) Rows Removed by Filter: 1 -> Index Scan using pk_prod on prod prodentity0_ (cost=0.43..0.60 rows=1 width=6197) (actual time=0.002..0.002 rows=1 loops=99005) Index Cond: (prod_id = prod.prod_id) Planning time: 6.947 ms Execution time: 1661.278 ms This is the view; view bss.v_prod_char_val
as
select prod_char_val.prod_char_val_id, prod_char_val.prod_id, prod_char_val.char_id, prod_char_val.char_val_id, prod_char_val.val, prod_char_val.trnsc_id, prod_char_val.sdate, prod_char_val.edate, prod_char_val.st_id, prod_char_val.cdate, prod_char_val.cuser, prod_char_val.udate, prod_char_val.uuser, gnl_char_lang.name
as char_name, gnl_char_val_lang.val_lbl
as char_val_name, charvalstatus.shrt_code
as prod_char_val_st_shrt_code, gnl_char_val_lang.lang, gnl_char.shrt_code, gnl_char_val.shrt_code
as char_val_shrt_code, prod.bill_acct_id from bss.prod_char_val left
join bss.prod
on prod.prod_id = prod_char_val.prod_id, bss.gnl_st prodstatus, bss.gnl_char left
join bss.gnl_char_lang
on gnl_char_lang.char_id = gnl_char.char_id, bss.gnl_char_val left
join bss.gnl_char_val_lang
on gnl_char_val_lang.char_val_id = gnl_char_val.char_val_id, bss.gnl_st charvalstatus where prod.st_id = prodstatus.gnl_st_id
and (prodstatus.shrt_code::text
= any (array['ACTV'::character
varying::text,
'PNDG'::character
varying::text]))
and gnl_char_val_lang.is_actv =
1::numeric
and gnl_char_lang.is_actv =
1::numeric
and gnl_char_lang.lang::text
= gnl_char_val_lang.lang::text
and prod_char_val.char_id = gnl_char.char_id
and prod_char_val.char_val_id = gnl_char_val.char_val_id
and prod_char_val.st_id = charvalstatus.gnl_st_id
and (charvalstatus.shrt_code::text
= any (array['ACTV'::character
varying::text,
'PNDG'::character
varying::text]));
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