build_path = os.getenv("BUILDDIR")
---
...
package.cpath = build_path..'/test/box/?.so;'..build_path..'/test/box/?.dylib;'..package.cpath
---
...
log = require('log')
---
...
net = require('net.box')
---
...
c = net.connect(os.getenv("LISTEN"))
---
...
box.schema.func.create('function1', {language = "C"})
---
...
id = box.func["function1"].id
---
...
function setmap(tab) return setmetatable(tab, { __serialize = 'map' }) end
---
...
datetime = os.date("%Y-%m-%d %H:%M:%S")
---
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'procedure', {}, 'any', 'none', 'none', false, false, true, {"LUA"}, setmap({}), '', datetime, datetime}
---
- error: 'Failed to create function ''function1'': unsupported routine_type value'
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'function', {}, 'any', 'none', 'reads', false, false, true, {"LUA"}, setmap({}), '', datetime, datetime}
---
- error: 'Failed to create function ''function1'': unsupported sql_data_access value'
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'function', {}, 'any', 'none', 'none', false, false, false, {"LUA"}, setmap({}), '', datetime, datetime}
---
- error: 'Failed to create function ''function1'': unsupported is_null_call value'
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'function', {}, 'data', 'none', 'none', false, false, true, {"LUA"}, setmap({}), '', datetime, datetime}
---
- error: 'Failed to create function ''function1'': invalid returns value'
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'function', {}, 'any', 'none', 'none', false, false, true, {"LUA", "C"}, setmap({}), '', datetime, datetime}
---
- error: 'Failed to create function ''function1'': invalid exports value'
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'function', {}, 'any', 'aggregate', 'none', false, false, true, {"LUA"}, setmap({}), '', datetime, datetime}
---
- error: 'Failed to create function ''function1'': invalid aggregate value'
...
box.space._func:replace{id, 1, 'function1', 0, 'LUA', '', 'function', {}, 'any', 'none', 'none', false, false, true, {"LUA"}, setmap({}), '', datetime, datetime}
---
- error: function does not support alter
...
box.schema.user.grant('guest', 'execute', 'function', 'function1')
---
...
_ = box.schema.space.create('test')
---
...
_ = box.space.test:create_index('primary')
---
...
box.schema.user.grant('guest', 'read,write', 'space', 'test')
---
...
c:call('function1')
---
- []
...
box.schema.func.drop("function1")
---
...
box.schema.func.create('function1.args', {language = "C"})
---
...
box.schema.user.grant('guest', 'execute', 'function', 'function1.args')
---
...
c:call('function1.args')
---
- error: invalid argument count
...
c:call('function1.args', { "xx" })
---
- error: first tuple field must be uint
...
c:call('function1.args', { 15 })
---
- [[15, 'hello']]
...
box.func["function1.args"]
---
- aggregate: none
  returns: any
  exports:
    lua: true
    sql: false
  id: 68
  setuid: false
  is_multikey: false
  is_deterministic: false
  name: function1.args
  language: C
...
box.func["function1.args"]:call()
---
- error: invalid argument count
...
box.func["function1.args"]:call({ "xx" })
---
- error: first tuple field must be uint
...
box.func["function1.args"]:call({ 15 })
---
- [15, 'hello']
...
box.schema.func.drop("function1.args")
---
...
box.func["function1.args"]
---
- null
...
box.schema.func.create('function1.multi_inc', {language = "C"})
---
...
box.schema.user.grant('guest', 'execute', 'function', 'function1.multi_inc')
---
...
c:call('function1.multi_inc')
---
- []
...
box.space.test:select{}
---
- []
...
c:call('function1.multi_inc', { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 })
---
- []
...
box.space.test:select{}
---
- - [1, 0]
  - [2, 0]
  - [3, 0]
  - [4, 0]
  - [5, 0]
  - [6, 0]
  - [7, 0]
  - [8, 0]
  - [9, 0]
  - [10, 0]
...
c:call('function1.multi_inc', { 2, 4, 6, 8, 10 })
---
- []
...
box.space.test:select{}
---
- - [1, 0]
  - [2, 1]
  - [3, 0]
  - [4, 1]
  - [5, 0]
  - [6, 1]
  - [7, 0]
  - [8, 1]
  - [9, 0]
  - [10, 1]
...
c:call('function1.multi_inc', { 0, 2, 4 })
---
- []
...
box.space.test:select{}
---
- - [0, 0]
  - [1, 0]
  - [2, 2]
  - [3, 0]
  - [4, 2]
  - [5, 0]
  - [6, 1]
  - [7, 0]
  - [8, 1]
  - [9, 0]
  - [10, 1]
...
box.schema.func.drop("function1.multi_inc")
---
...
box.schema.func.create('function1.errors', {language = "C"})
---
...
box.schema.user.grant('guest', 'execute', 'function', 'function1.errors')
---
...
c:call('function1.errors')
---
- error: unknown error
...
box.schema.func.drop("function1.errors")
---
...
box.schema.func.create('xxx', {language = 'invalid'})
---
- error: Unsupported language 'INVALID' specified for function 'xxx'
...
-- language normalization
function func_lang(name) return (box.space._func.index[2]:select{name}[1] or {})[5] end
---
...
box.schema.func.create('f11'),                      func_lang('f11')
---
- null
- LUA
...
box.schema.func.create('f12', {language = 'Lua'}),  func_lang('f12')
---
- null
- LUA
...
box.schema.func.create('f13', {language = 'lua'}),  func_lang('f13')
---
- null
- LUA
...
box.schema.func.create('f14', {language = 'lUa'}),  func_lang('f14')
---
- null
- LUA
...
box.schema.func.create('f15', {language = 'c'}),    func_lang('f15')
---
- null
- C
...
box.schema.func.create('f16', {language = 'C'}),    func_lang('f16')
---
- null
- C
...
box.schema.func.drop("f11")
---
...
box.schema.func.drop("f12")
---
...
box.schema.func.drop("f13")
---
...
box.schema.func.drop("f14")
---
...
box.schema.func.drop("f15")
---
...
box.schema.func.drop("f16")
---
...
box.space.test:drop()
---
...
-- Missing shared library
name = 'unkownmod.unknownfunc'
---
...
box.schema.func.create(name, {language = 'C'})
---
...
box.schema.user.grant('guest', 'execute', 'function', name)
---
...
c:call(name)
---
- error: 'Failed to dynamically load module ''unkownmod'': module not found'
...
box.schema.func.drop(name)
---
...
-- Drop function while executing gh-910
box.schema.func.create('function1.test_yield', {language = "C"})
---
...
box.schema.user.grant('guest', 'execute', 'function', 'function1.test_yield')
---
...
s = box.schema.space.create('test_yield')
---
...
_ = s:create_index('pk')
---
...
box.schema.user.grant('guest', 'read,write', 'space', 'test_yield')
---
...
fiber = require('fiber')
---
...
ch = fiber.channel(1)
---
...
_ = fiber.create(function() c:call('function1.test_yield') ch:put(true) end)
---
...
while s:get({1}) == nil do fiber.yield(0.0001) end
---
...
box.schema.func.drop('function1.test_yield')
---
...
ch:get()
---
- true
...
s:drop()
---
...
-- gh-2914: check identifier constraints.
test_run = require('test_run').new()
---
...
test_run:cmd("push filter '(.builtin/.*.lua):[0-9]+' to '\\1'")
---
- true
...
identifier = require("identifier")
---
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
--
-- '.' in func name is used to point out path therefore '.' in name
-- itself is prohibited
--
--
identifier.run_test(
	function (identifier)
		if identifier == "." then return end
		box.schema.func.create(identifier, {language = "lua"})
		box.schema.user.grant('guest', 'execute', 'function', identifier)
		rawset(_G, identifier, function () return 1 end)
		local res = pcall(c.call, c, identifier)
		if c:call(identifier) ~= 1 then
			error("Should not fire")
		end
		rawset(_G, identifier, nil)
	end,
	function (identifier)
		if identifier == "." then return end
		box.schema.func.drop(identifier)
	end
);
---
- All tests passed
...
test_run:cmd("setopt delimiter ''");
---
- true
...
c:close()
---
...
--
-- gh-2233: Invoke Lua functions created outside SQL.
--
box.schema.func.create('WAITFOR', {language = 'SQL_BUILTIN', \
	param_list = {'integer'}, returns = 'integer',exports = {'SQL'}})
---
- error: 'Failed to create function ''WAITFOR'': given built-in is not predefined'
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
box.schema.func.create("function1.divide", {language = 'C', returns = 'number',
					    is_deterministic = true,
					    exports = {'LUA'}})
test_run:cmd("setopt delimiter ''");
---
...
box.execute('SELECT "function1.divide"()')
---
- null
- function function1.divide() is not available in SQL
...
box.func["function1.divide"]:drop()
---
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
box.schema.func.create("function1.divide", {language = 'C', returns = 'number',
					    is_deterministic = true,
					    exports = {'LUA', 'SQL'}})
test_run:cmd("setopt delimiter ''");
---
...
box.execute('SELECT "function1.divide"()')
---
- null
- invalid argument
...
box.execute('SELECT "function1.divide"(6)')
---
- null
- 'Wrong number of arguments is passed to function1.divide(): expected 0, got 1'
...
box.execute('SELECT "function1.divide"(6, 3)')
---
- null
- 'Wrong number of arguments is passed to function1.divide(): expected 0, got 2'
...
box.func["function1.divide"]:drop()
---
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
box.schema.func.create("function1.divide", {language = 'C', returns = 'number',
					    param_list = {'number', 'number'},
					    is_deterministic = true,
					    exports = {'LUA', 'SQL'}})
test_run:cmd("setopt delimiter ''");
---
...
box.execute('SELECT "function1.divide"()')
---
- null
- 'Wrong number of arguments is passed to function1.divide(): expected 2, got 0'
...
box.execute('SELECT "function1.divide"(6)')
---
- null
- 'Wrong number of arguments is passed to function1.divide(): expected 2, got 1'
...
box.execute('SELECT "function1.divide"(6, 3, 3)')
---
- null
- 'Wrong number of arguments is passed to function1.divide(): expected 2, got 3'
...
box.execute('SELECT "function1.divide"(6, 3)')
---
- metadata:
  - name: COLUMN_1
    type: number
  rows:
  - [2]
...
box.execute('SELECT "function1.divide"(5, 2)')
---
- metadata:
  - name: COLUMN_1
    type: number
  rows:
  - [2.5]
...
box.func["function1.divide"]:drop()
---
...
function SUMMARIZE(a, b) return a + b end
---
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
box.schema.func.create("SUMMARIZE", {language = 'LUA', returns = 'number',
				     is_deterministic = true,
				     param_list = {'number', 'number'},
				     exports = {'LUA', 'SQL'}})
test_run:cmd("setopt delimiter ''");
---
...
box.execute('SELECT summarize(1, 2)')
---
- metadata:
  - name: COLUMN_1
    type: number
  rows:
  - [3]
...
box.func.SUMMARIZE:drop()
---
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
box.schema.func.create("SUMMARIZE", {language = 'LUA', returns = 'number',
				     body = 'function (a, b) return a + b end',
				     is_deterministic = true,
				     param_list = {'number', 'number'},
				     exports = {'LUA', 'SQL'}})
test_run:cmd("setopt delimiter ''");
---
...
box.execute('SELECT summarize(1, 2)')
---
- metadata:
  - name: COLUMN_1
    type: number
  rows:
  - [3]
...
box.func.SUMMARIZE:drop()
---
...
--
-- gh-4113: Valid method to use Lua from SQL
--
box.execute('SELECT lua(\'return 1 + 1\')')
---
- metadata:
  - name: COLUMN_1
    type: any
  rows:
  - [2]
...
box.execute('SELECT lua(\'return box.cfg\')')
---
- null
- 'Failed to execute SQL statement: Unsupported type passed from Lua'
...
box.execute('SELECT lua(\'return box.cfg()\')')
---
- null
- SQL expects exactly one argument returned from Lua, got 0
...
box.execute('SELECT lua(\'return box.cfg.memtx_memory\')')
---
- metadata:
  - name: COLUMN_1
    type: any
  rows:
  - [107374182]
...
-- Test registered functions interface.
function divide(a, b) return a / b end
---
...
box.schema.func.create("divide", {comment = 'Divide two values'})
---
...
func = box.func.divide
---
...
func.call({4, 2})
---
- error: 'builtin/box/schema.lua: Use func:call(...) instead of func.call(...)'
...
func:call(4, 2)
---
- error: 'builtin/box/schema.lua: Use func:call(table)'
...
func:call()
---
- error: '[string "function divide(a, b) return a / b end "]:1: attempt to perform
    arithmetic on local ''a'' (a nil value)'
...
func:call({})
---
- error: '[string "function divide(a, b) return a / b end "]:1: attempt to perform
    arithmetic on local ''a'' (a nil value)'
...
func:call({4})
---
- error: '[string "function divide(a, b) return a / b end "]:1: attempt to perform
    arithmetic on local ''b'' (a nil value)'
...
func:call({4, 2})
---
- 2
...
func:call({4, 2, 1})
---
- 2
...
func:drop()
---
...
func
---
- aggregate: none
  returns: any
  exports:
    lua: true
    sql: false
  id: 68
  setuid: false
  is_multikey: false
  is_deterministic: false
  comment: Divide two values
  name: divide
  language: LUA
...
func.drop()
---
- error: 'builtin/box/schema.lua: Use func:drop(...) instead of func.drop(...)'
...
box.func.divide
---
- null
...
func:drop()
---
- error: Function 'divide' does not exist
...
func:call({4, 2})
---
- error: Function 'divide' does not exist
...
box.internal.func_call('divide', 4, 2)
---
- error: Function 'divide' does not exist
...
box.schema.func.create("function1.divide", {language = 'C'})
---
...
func = box.func["function1.divide"]
---
...
func:call(4, 2)
---
- error: 'builtin/box/schema.lua: Use func:call(table)'
...
func:call()
---
- error: invalid argument
...
func:call({})
---
- error: invalid argument
...
func:call({4})
---
- error: invalid argument
...
func:call({4, 2})
---
- [2]
...
func:call({4, 2, 1})
---
- [2]
...
func:drop()
---
...
box.func["function1.divide"]
---
- null
...
func
---
- aggregate: none
  returns: any
  exports:
    lua: true
    sql: false
  id: 68
  setuid: false
  is_multikey: false
  is_deterministic: false
  name: function1.divide
  language: C
...
func:drop()
---
- error: Function 'function1.divide' does not exist
...
func:call({4, 2})
---
- error: Function 'function1.divide' does not exist
...
box.internal.func_call('function1.divide', 4, 2)
---
- error: Function 'function1.divide' does not exist
...
test_run:cmd("setopt delimiter ';'")
---
- true
...
function minmax(array)
	local min = 999
	local max = -1
	for _, v in pairs(array) do
		min = math.min(min, v)
		max = math.max(max, v)
	end
	return min, max
end
test_run:cmd("setopt delimiter ''");
---
...
box.schema.func.create("minmax")
---
...
func = box.func.minmax
---
...
func:call({{1, 2, 99, 3, -1}})
---
- -1
- 99
...
func:drop()
---
...
box.func.minmax
---
- null
...
-- Test access checks for registered functions.
function secret() return 1 end
---
...
box.schema.func.create("secret")
---
...
box.func.secret:call({})
---
- 1
...
function secret_leak() return box.func.secret:call() end
---
...
box.schema.func.create('secret_leak')
---
...
box.schema.user.grant('guest', 'execute', 'function', 'secret_leak')
---
...
conn = net.connect(box.cfg.listen)
---
...
conn:call('secret_leak')
---
- error: Execute access to function 'secret' is denied for user 'guest'
...
conn:close()
---
...
box.schema.user.revoke('guest', 'execute', 'function', 'secret_leak')
---
...
box.schema.func.drop('secret_leak')
---
...
box.schema.func.drop('secret')
---
...
-- UDF corner cases for SQL: no value returned, too many values returned
box.execute("SELECT LUA('a = 1 + 1')")
---
- null
- SQL expects exactly one argument returned from Lua, got 0
...
box.execute("SELECT LUA('return 1, 2')")
---
- null
- SQL expects exactly one argument returned from Lua, got 2
...
box.schema.func.create('function1', {language = "C", exports = {'LUA', 'SQL'}})
---
...
box.execute("SELECT \"function1\"()")
---
- null
- SQL expects exactly one argument returned from C, got 0
...
box.schema.func.drop("function1")
---
...
box.schema.func.create('function1.multireturn', {language = "C", exports = {'LUA', 'SQL'}})
---
...
box.execute("SELECT \"function1.multireturn\"()")
---
- null
- SQL expects exactly one argument returned from C, got 2
...
box.schema.func.drop("function1.multireturn")
---
...
--
-- gh-4641: box_return_mp() C API to return arbitrary MessagePack
-- from C functions.
--
name = 'function1.test_return_mp'
---
...
box.schema.func.create(name, {language = "C", exports = {'LUA'}})
---
...
box.func[name]:call()
---
- 1
- -1
- 18446744073709551615
- '123456789101112131415'
- [2]
...
box.schema.user.grant('guest', 'super')
---
...
-- Netbox:call() returns not the same as local call for C
-- functions, see #4799.
net:connect(box.cfg.listen):call(name)
---
- [1, -1, 18446744073709551615, '123456789101112131415', [2]]
...
box.schema.user.revoke('guest', 'super')
---
...
box.schema.func.drop(name)
---
...
--
-- gh-4182: Introduce persistent Lua functions.
--
test_run:cmd("setopt delimiter ';'")
---
- true
...
body = [[function(tuple)
		if type(tuple.address) ~= 'string' then
			return nil, 'Invalid field type'
		end
		local t = tuple.address:upper():split()
		for k,v in pairs(t) do t[k] = v end
		return t
	end
]]
test_run:cmd("setopt delimiter ''");
---
...
box.schema.func.create('addrsplit', {body = body, language = "C"})
---
- error: 'Failed to create function ''addrsplit'': body and is_sandboxed options are
    not compatible with C language'
...
box.schema.func.create('addrsplit', {is_sandboxed = true, language = "C"})
---
- error: 'Failed to create function ''addrsplit'': body and is_sandboxed options are
    not compatible with C language'
...
box.schema.func.create('addrsplit', {is_sandboxed = true})
---
- error: 'Failed to create function ''addrsplit'': is_sandboxed option may be set
    only for a persistent Lua function (one with a non-empty body)'
...
box.schema.func.create('invalid', {body = "function(tuple) ret tuple"})
---
- error: 'Failed to dynamically load function ''invalid'': [string "return function(tuple)
    ret tuple"]:1: ''='' expected near ''tuple'''
...
box.schema.func.create('addrsplit', {body = body, is_deterministic = true})
---
...
box.schema.user.grant('guest', 'execute', 'function', 'addrsplit')
---
...
conn = net.connect(box.cfg.listen)
---
...
conn:call('addrsplit', {{address = "Moscow Dolgoprudny"}})
---
- ['MOSCOW', 'DOLGOPRUDNY']
...
box.func.addrsplit:call({{address = "Moscow Dolgoprudny"}})
---
- - MOSCOW
  - DOLGOPRUDNY
...
conn:close()
---
...
box.snapshot()
---
- ok
...
test_run:cmd("restart server default")
test_run = require('test_run').new()
---
...
test_run:cmd("push filter '(.builtin/.*.lua):[0-9]+' to '\\1'")
---
- true
...
net = require('net.box')
---
...
conn = net.connect(box.cfg.listen)
---
...
conn:call('addrsplit', {{address = "Moscow Dolgoprudny"}})
---
- ['MOSCOW', 'DOLGOPRUDNY']
...
box.func.addrsplit:call({{address = "Moscow Dolgoprudny"}})
---
- - MOSCOW
  - DOLGOPRUDNY
...
conn:close()
---
...
box.schema.user.revoke('guest', 'execute', 'function', 'addrsplit')
---
...
box.func.addrsplit:drop()
---
...
-- Test sandboxed functions.
test_run:cmd("setopt delimiter ';'")
---
- true
...
body = [[function(number)
		math.abs = math.log
		return math.abs(number)
	end]]
test_run:cmd("setopt delimiter ''");
---
...
box.schema.func.create('monkey', {body = body, is_sandboxed = true})
---
...
box.func.monkey:call({1})
---
- 0
...
math.abs(1)
---
- 1
...
box.func.monkey:drop()
---
...
sum = 0
---
...
function inc_g(val) sum = sum + val end
---
...
box.schema.func.create('call_inc_g', {body = "function(val) inc_g(val) end"})
---
...
box.func.call_inc_g:call({1})
---
...
assert(sum == 1)
---
- true
...
box.schema.func.create('call_inc_g_safe', {body = "function(val) inc_g(val) end", is_sandboxed = true})
---
...
box.func.call_inc_g_safe:call({1})
---
- error: '[string "return function(val) inc_g(val) end"]:1: attempt to call global
    ''inc_g'' (a nil value)'
...
assert(sum == 1)
---
- true
...
box.func.call_inc_g:drop()
---
...
box.func.call_inc_g_safe:drop()
---
...
-- Test persistent function assemble corner cases
box.schema.func.create('compiletime_tablef', {body = "{}"})
---
- error: 'Failed to dynamically load function ''compiletime_tablef'': given body doesn''t
    define a function'
...
box.schema.func.create('compiletime_call_inc_g', {body = "inc_g()"})
---
- error: 'Failed to dynamically load function ''compiletime_call_inc_g'': [string
    "return inc_g()"]:1: attempt to call global ''inc_g'' (a nil value)'
...
assert(sum == 1)
---
- true
...
test_run:cmd("clear filter")
---
- true
...
--
-- Check that function cache is updated synchronously with _func changes.
--
box.begin() box.schema.func.create('test') f = box.func.test box.rollback()
---
...
f ~= nil
---
- true
...
box.func.test == nil
---
- true
...
box.schema.func.create('test')
---
...
f = box.func.test
---
...
box.begin() box.space._func:delete{f.id} f = box.func.test box.rollback()
---
...
f == nil
---
- true
...
box.func.test ~= nil
---
- true
...
box.func.test:drop()
---
...
-- Check SQL builtins
test_run:cmd("setopt delimiter ';'")
---
- true
...
sql_builtin_list = {
	"TRIM", "TYPEOF", "PRINTF", "UNICODE", "CHAR", "HEX", "VERSION",
	"QUOTE", "REPLACE", "SUBSTR", "GROUP_CONCAT", "JULIANDAY", "DATE",
	"TIME", "DATETIME", "STRFTIME", "CURRENT_TIME", "CURRENT_TIMESTAMP",
	"CURRENT_DATE", "LENGTH", "POSITION", "ROUND", "UPPER", "LOWER",
	"IFNULL", "RANDOM", "CEIL", "CEILING", "CHARACTER_LENGTH",
	"CHAR_LENGTH", "FLOOR", "MOD", "OCTET_LENGTH", "ROW_COUNT", "COUNT",
	"LIKE", "ABS", "EXP", "LN", "POWER", "SQRT", "SUM", "TOTAL", "AVG",
	"RANDOMBLOB", "NULLIF", "ZEROBLOB", "MIN", "MAX", "COALESCE", "EVERY",
	"EXISTS", "EXTRACT", "SOME", "GREATER", "LESSER", "SOUNDEX",
	"LIKELIHOOD", "LIKELY", "UNLIKELY", "_sql_stat_get", "_sql_stat_push",
	"_sql_stat_init", "GREATEST", "LEAST"
}
test_run:cmd("setopt delimiter ''");
---
...
ok = true
---
...
for _, v in pairs(sql_builtin_list) do ok = ok and (box.space._func.index.name:get(v) ~= nil) end
---
...
ok == true
---
- true
...
box.func.LUA:call({"return 1 + 1"})
---
- 2
...
box.schema.user.grant('guest', 'execute', 'function', 'SUM')
---
...
c = net.connect(box.cfg.listen)
---
...
c:call("SUM")
---
- error: sql builtin function does not support Lua frontend
...
c:close()
---
...
box.schema.user.revoke('guest', 'execute', 'function', 'SUM')
---
...
box.schema.func.drop("SUM")
---
- error: 'Can''t drop function 1: function is SQL built-in'
...
-- Introduce function options
box.schema.func.create('test', {body = "function(tuple) return tuple end", is_deterministic = true, opts = {is_multikey = true}})
---
...
box.func['test'].is_multikey == true
---
- true
...
box.func['test']:drop()
---
...