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not correct result function LAG, if OFFSET value ​​are assigned from a table [CORE4330] #4653

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firebird-automations opened this issue Feb 2, 2014 · 7 comments

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@firebird-automations
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Submitted by: @sim1984

Is related to QA590

with t(a, b) as
(
select 1, null from rdb$database
union all
select 2, 1 from rdb$database
union all
select 3, 2 from rdb$database
union all
select 4, 3 from rdb$database
union all
select 5, 2 from rdb$database
)
select
a,
b,
lag(a, b) over(order by a) as la
from t

A B LA
1
2 1 <-- incorrect
3 2 <-- incorrect
4 3 2 <-- incorrect
5 2 3

PostgreSQL return correct result

with t(a, b) as
(
select 1, null
union all
select 2, 1
union all
select 3, 2
union all
select 4, 3
union all
select 5, 2
)
select
a,
b,
lag(a, b) over(order by a) as la
from t

A B LA
1
2 1 1
3 2 1
4 3 1
5 2 3

Commits: 49fa42f FirebirdSQL/fbt-repository@1f36b5e

@firebird-automations
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Modified by: @sim1984

summary: not correct result function LAG, if the value OFFSET values ​​are assigned from a table => not correct result function LAG, if OFFSET value ​​are assigned from a table

@firebird-automations
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Modified by: @asfernandes

assignee: Adriano dos Santos Fernandes [ asfernandes ]

@firebird-automations
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Modified by: @asfernandes

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 3.0 Beta 1 [ 10332 ]

@firebird-automations
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Modified by: @pcisar

Link: This issue is related to QA590 [ QA590 ]

@firebird-automations
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Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

QA Status: Done successfully

@firebird-automations
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Commented by: @pcisar

Test created.

@firebird-automations
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Modified by: @pcisar

status: Resolved [ 5 ] => Closed [ 6 ]

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