[tarantool-patches] Re: [PATCH 0/4] Replace space id with space ptrs in VDBE runtime

["v.shpilevoy@tarantool.org" <v.shpilevoy@tarantool.org>]

See my commits with the final review fixes on you branch (you can squash them, or not - on your choice).

And please fix failing tests on commit "sql: introduce opcodes to operate on system spaces".

> 21 марта 2018 г., в 2:48, Nikita Pettik <korablev@tarantool.org> написал(а):
> 
> Branch: https://github.com/tarantool/tarantool/tree/np/gh-3252-slit-dml-and-ddl-sql
> Issue: https://github.com/tarantool/tarantool/issues/3252
> 
> In order to avoid additional lookups during VDBE execution,
> it was suggested to pass pointer fetched at query compilation time to
> opcodes which create cursors (i.e. OP_OpenRead and OP_OpenWrite).
> However, any DDL routine may invalidate pointers. Thus, to operate on
> system spaces (which are used during DDL) new opcodes have been introduced:
> OP_SInsert and OP_SDelete. But originally, SQL DDL under hood used nested
> parsing to generate code for non-trivial deletion. For instance:
> "DELETE FROM _INDEX WHERE id = space_id AND iid > 0" -- to remove all
> secondary indexes. To use new operands such nested parsing has been
> substituted with hardcoded VDBE programs.
> Finally, fresh pointer to space can also be obtained at VDBE rutime using
> new opcode OP_SIDtoPtr, which converts space id to ptr and saves it to
> given register. This opcode should be used when it is impossible to avoid
> mixing DDL and DML routine in the same query
> (e.g. CREATE TABLE AS SELECT FROM ...).
> 
> Nikita Pettik (4):
>  sql: pass space pointer to OP_OpenRead/OpenWrite
>  sql: introduce opcodes to operate on system spaces
>  sql: rework code generation for DDL routine
>  sql: rework OP_OpenWrite/OpenRead
> 
> src/box/sql.c                |  51 ++++---
> src/box/sql/analyze.c        |  17 ++-
> src/box/sql/build.c          | 321 ++++++++++++++++++++++---------------------
> src/box/sql/expr.c           |  14 +-
> src/box/sql/fkey.c           |  11 +-
> src/box/sql/insert.c         |  37 ++++-
> src/box/sql/opcodes.c        |  51 +++----
> src/box/sql/opcodes.h        |  59 ++++----
> src/box/sql/select.c         |  11 +-
> src/box/sql/sqliteInt.h      |   5 +
> src/box/sql/tarantoolInt.h   |  11 +-
> src/box/sql/trigger.c        |  27 ++--
> src/box/sql/vdbe.c           | 310 +++++++++++++++++++++--------------------
> src/box/sql/vdbe.h           |   1 +
> src/box/sql/vdbeInt.h        |   1 +
> src/box/sql/vdbeaux.c        |  13 ++
> src/box/sql/where.c          |  12 +-
> test/sql/transition.result   |  11 +-
> test/sql/transition.test.lua |   8 +-
> 19 files changed, 550 insertions(+), 421 deletions(-)
> 
> -- 
> 2.15.1
> 
>