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Error "context already in use (BLR error)" when preparing a query with UNION [CORE4144] #4471

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firebird-issue-importer opened this issue Jul 19, 2013 · 8 comments

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@firebird-issue-importer

Submitted by: @hvlad

Is related to QA516

It was discovered when researching bug CORE4005, but it is not depends on recursive queries.

Simplified example:

select n
from
(
select d.rdb$relation_id as n from rdb$database d
union all
select d.rdb$relation_id as n from rdb$database d
)

union all

select cast(1 as bigint) from rdb$database d

At prepare time error is raised:

Invalid token.
invalid request BLR at offset 24.
context already in use (BLR error).

The bug happens when :
- first member of UNION is derived table, and
- data type of first field of that derived table is impliciltly CAST'ed to the type of whole UNION (int -> bigint in example above)

Commits: a4d6f10 01a6f1a 7986522 FirebirdSQL/fbt-repository@c83aa49 FirebirdSQL/fbt-repository@29debd8 FirebirdSQL/fbt-repository@870df69 FirebirdSQL/fbt-repository@b3d1d8e

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firebird-issue-importer commented Jul 19, 2013

Modified by: @hvlad

assignee: Vlad Khorsun [ hvlad ]

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firebird-issue-importer commented Jul 22, 2013

Commented by: @hvlad

Bug was introduced at v2.0

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firebird-issue-importer commented Jul 22, 2013

Modified by: @hvlad

Version: 2.1.5 Update 1 [ 10522 ]

Version: 2.5.2 [ 10450 ]

Version: 2.1.5 [ 10420 ]

Version: 2.0.7 [ 10390 ]

Version: 2.5.1 [ 10333 ]

Version: 2.1.4 [ 10361 ]

Version: 2.5.0 [ 10221 ]

Version: 2.0.6 [ 10303 ]

Version: 3.0 Initial [ 10301 ]

Version: 2.1.3 [ 10302 ]

Version: 2.1.2 [ 10270 ]

Version: 2.0.5 [ 10222 ]

Version: 2.1.1 [ 10223 ]

Version: 2.1.0 [ 10041 ]

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firebird-issue-importer commented Jul 22, 2013

Modified by: @hvlad

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

resolution: Fixed [ 1 ]

Fix Version: 3.0 Alpha 1 [ 10331 ]

Fix Version: 2.5.3 [ 10461 ]

Fix Version: 2.1.6 [ 10460 ]

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firebird-issue-importer commented Mar 29, 2014

Modified by: @pcisar

Link: This issue is related to QA516 [ QA516 ]

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firebird-issue-importer commented Sep 25, 2015

Commented by: @pcisar

Test created.

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firebird-issue-importer commented Sep 25, 2015

Modified by: @pcisar

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

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firebird-issue-importer commented Dec 29, 2015

Modified by: @pavel-zotov

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

QA Status: Done successfully

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