[tarantool-patches] [PATCH v2 0/8] sql: uniform SQL and Lua functions subsystem

[Kirill Shcherbatov <kshcherbatov@tarantool.org>]

This patchset reworks SQL functions subsystem. Previously Tarantool's
SQL used an own FuncDef function representation and corresponding
FuncDef cache. Replacing it with Tarantool's uniform function
representation makes possible to call any function on any supported
language in SQL.

Changes in version 2:
  - introduced GREATER, LESSER entries
  - reworked multiple signatures for functions: only SQL builtins
    support name overload and it is trivial and processed by
    single function implementation
  - introduced OP_BuiltinFunction to use func_sql_builtin's
    function implementation directly without port proxy object

Branch: http://github.com/tarantool/tarantool/tree/kshch/gh-4182-persistent-functions
Issue: https://github.com/tarantool/tarantool/issues/2233

Kirill Shcherbatov (8):
  sql: remove SQL_PreferBuiltin flag
  sql: GREATEST, LEAST instead of MIN/MAX overload
  sql: wrap all trim functions in dispatcher
  sql: get rid of SQL_FUNC_COUNT flag
  sql: introduce a signature_mask for functions
  sql: rename OP_Function to OP_BuiltinFunction
  sql: get rid of FuncDef function hash
  box: get rid of box.internal.sql_function_create

 src/box/func_def.h              |   2 +-
 src/box/lua/lua_sql.h           |  39 --
 src/box/port.h                  |  17 +
 src/box/sql.h                   |   5 +
 src/box/sql/sqlInt.h            | 240 ++++--------
 src/box/sql/vdbe.h              |   9 +-
 src/box/sql/vdbeInt.h           |  26 +-
 src/lib/core/port.h             |  19 +
 src/box/call.c                  |   1 +
 src/box/execute.c               |   1 +
 src/box/func.c                  |  34 +-
 src/box/lua/call.c              |   6 +-
 src/box/lua/lua_sql.c           | 205 -----------
 src/box/port.c                  |   4 +
 src/box/sql.c                   |  24 ++
 src/box/sql/analyze.c           |  41 +--
 src/box/sql/callback.c          | 212 +----------
 src/box/sql/date.c              |  28 --
 src/box/sql/expr.c              |  64 ++--
 src/box/sql/func.c              | 627 ++++++++++++++++++++++++++------
 src/box/sql/global.c            |   7 -
 src/box/sql/main.c              | 137 -------
 src/box/sql/resolve.c           |  50 +--
 src/box/sql/select.c            |   9 +-
 src/box/sql/vdbe.c              |  94 +++--
 src/box/sql/vdbeapi.c           |  11 +-
 src/box/sql/vdbeaux.c           |  31 +-
 src/box/sql/vdbemem.c           |  50 ++-
 src/box/sql/whereexpr.c         |   2 +-
 src/box/CMakeLists.txt          |   1 -
 src/box/bootstrap.snap          | Bin 5907 -> 5944 bytes
 src/box/lua/schema.lua          |   3 +-
 src/box/lua/upgrade.lua         |  20 +
 test-run                        |   2 +-
 test/box-py/bootstrap.result    |   4 +-
 test/box/access.result          |   2 +-
 test/box/access.test.lua        |   2 +-
 test/box/access_bin.result      |   2 +-
 test/box/access_bin.test.lua    |   2 +-
 test/box/access_misc.result     | 134 +++----
 test/box/access_sysview.result  |   8 +-
 test/box/function1.result       | 179 ++++++++-
 test/box/function1.test.lua     |  62 +++-
 test/sql-tap/alias.test.lua     |  11 +-
 test/sql-tap/check.test.lua     |  11 +-
 test/sql-tap/coalesce.test.lua  |   2 +-
 test/sql-tap/func3.test.lua     |  12 +-
 test/sql-tap/func5.test.lua     |  61 ++--
 test/sql-tap/in1.test.lua       |   6 +-
 test/sql-tap/insert1.test.lua   |   2 +-
 test/sql-tap/lua_sql.test.lua   | 121 +++---
 test/sql-tap/misc1.test.lua     |   2 +-
 test/sql-tap/select1.test.lua   |  22 +-
 test/sql-tap/select2.test.lua   |   6 +-
 test/sql-tap/select3.test.lua   |   2 +-
 test/sql-tap/subquery.test.lua  |  21 +-
 test/sql-tap/trigger9.test.lua  |   8 +-
 test/sql-tap/where2.test.lua    |   4 +-
 test/sql-tap/with1.test.lua     |   2 +-
 test/sql/errinj.result          |  26 --
 test/sql/errinj.test.lua        |  10 -
 test/sql/func-recreate.result   |  41 ++-
 test/sql/func-recreate.test.lua |  26 +-
 test/sql/iproto.result          |   8 +-
 test/sql/iproto.test.lua        |   4 +-
 test/sql/types.result           |  12 +-
 test/sql/types.test.lua         |   6 +-
 test/wal_off/func_max.result    |   8 +-
 68 files changed, 1458 insertions(+), 1392 deletions(-)
 delete mode 100644 src/box/lua/lua_sql.h
 delete mode 100644 src/box/lua/lua_sql.c

-- 
2.22.0