[Tarantool-patches] [PATCH v2 0/3] Add ability to drop constraints

[Vladislav Shpilevoy]

Hi! Thanks for the patchset!

Almost ready to push, good patch. I have very
few nits.

On 29/02/2020 13:46, Roman Khabibov wrote:
> @ChangeLog
> - Add function space_index_by_name().
> - Add ability to spacify searching index in OP_SDelete.
> - Add function vdbe_emit_index_drop() to drop index by name.
> - Remove box_index_by_name() from build.c and pragma.c.
> - Rewrite function sql_drop_foreign_key() to  sql_drop_constraint().
> - Add ability to drop all the types of constraints.
> - Modify "no such constrait" error message.

Sorry, this is not a change log which is needed for the
release notes. See examples in
https://github.com/tarantool/tarantool/releases.

Users don't care about internal functions being moved/deleted/
renamed/patched. Also I don't see a word about DROP CONSTRAINT,
which was this ticket about in the first place.

Also I see that you somewhy split the thread in two parts, so
I received only 0/3, 1/3 and 2/3 letters in this thread, while
3/3 was sent in response to the old thread - please, don't do
that. It complicates review process. In an old thread you should
send only answers on comments. All new patches should go in a new
thread, if you decided to start it.

Last thing - the branch is very outdated. Please, rebase it on
the latest master.

> Hello, everybody!
> As Nikita requested, I performed the patch to remove
> box_index_by_name() from build.c and pragma.c, but what about
> analyze.c? Still had to add space_index_by_name() to use in
> pragma.c, beacuse struct index is required.

We can't do anything about analyze, because it is disabled.

> Roman Khabibov (3):
>   sql: improve "no such constraint" error message
>   sql: don't select from _index during parsing
>   sql: support constraint drop
> 
>  src/box/constraint_id.h      |   1 +
>  src/box/errcode.h            |   2 +-
>  src/box/space.h              |  15 ++++
>  src/box/sql/alter.c          |   2 +-
>  src/box/sql/build.c          | 143 ++++++++++++++++++++++-------------
>  src/box/sql/parse.y          |   4 +-
>  src/box/sql/parse_def.h      |  11 +--
>  src/box/sql/pragma.c         |   8 +-
>  src/box/sql/sqlInt.h         |   7 +-
>  src/box/sql/vdbe.c           |  10 ++-
>  test/sql-tap/alter2.test.lua |   2 +-
>  test/sql/checks.result       |   2 +-
>  test/sql/constraint.result   |  81 ++++++++++++++++++++
>  test/sql/constraint.test.lua |  28 +++++++
>  14 files changed, 240 insertions(+), 76 deletions(-)
>