ddl: support interval type in format

Datetime intervals are supported as a part of space schema format since
2.10.0 [1]. They are not allowed to be a part of memtx index [2].

1. tarantool/tarantool@a9e30fb
2. https://github.com/tarantool/tarantool/blob/ddaa5a320ee8d8d1009e07bbf6b8fe5cb4acbb45/src/box/memtx_space.c#L844-L851

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Added
+
+- Added support of `interval` type for Tarantool 2.10+ space format.
+
 ## [1.6.4] - 2023-07-05
 
 ### Added

README.md

@@ -112,7 +112,8 @@ format = {
                     type = 'unsigned' | 'string' | 'varbinary' |
                             'integer' | 'number' | 'boolean' |
                             'array' | 'scalar' | 'any' | 'map' |
-                            'decimal' | 'double' | 'uuid' | 'datetime'
+                            'decimal' | 'double' | 'uuid' | 'datetime' |
+                            'interval'
                 },
                 ...
             },

ddl/check.lua

@@ -59,6 +59,7 @@ local function check_field(i, field, space)
             double    = true,
             uuid      = true,
             datetime  = true,
+            interval  = true,
         }
 
         if known_field_types[field.type] == nil then
@@ -81,6 +82,13 @@ local function check_field(i, field, space)
                 space.name, field.name, _TARANTOOL
             )
         end
+
+        if not db.interval_allowed() and field.type == 'interval' then
+            return nil, string.format(
+                "spaces[%q].format[%q].type: interval type isn't allowed in your Tarantool version (%s)",
+                space.name, field.name, _TARANTOOL
+            )
+        end
     end
 
 

ddl/db.lua

@@ -107,6 +107,10 @@ local function datetime_allowed()
     return tarantool_version_at_least(2, 10)
 end
 
+local function interval_allowed()
+    return tarantool_version_at_least(2, 10)
+end
+
 -- https://github.com/tarantool/tarantool/issues/4083
 local function transactional_ddl_allowed()
     return tarantool_version_at_least(2, 2)
@@ -155,6 +159,7 @@ return {
     multikey_path_allowed = multikey_path_allowed,
     transactional_ddl_allowed = transactional_ddl_allowed,
     datetime_allowed = datetime_allowed,
+    interval_allowed = interval_allowed,
     exclude_null_allowed = exclude_null_allowed,
 
     call_atomic = call_atomic,

test/check_schema_test.lua

@@ -199,6 +199,12 @@ function g.test_datetime_index_part_type()
     end
 end
 
+function g.test_interval_index_part_type()
+    local ok, err = ddl_check.check_index_part_type('interval', 'TREE')
+    t.assert_not(ok)
+    t.assert_equals(err, "interval field type is unsupported in TREE index type")
+end
+
 function g.test_index_part_path()
     local index_info = {type = 'HASH'}
 
@@ -1156,6 +1162,21 @@ function g.test_field()
             _TARANTOOL
         ))
     end
+
+    local ok, err = ddl_check.check_field(
+        1, {name = 'x', type = 'interval', is_nullable = false}, space_info
+    )
+    if db.v(2, 10) then
+        t.assert(ok)
+        t.assert_not(err)
+    else
+        t.assert_not(ok)
+        t.assert_equals(err, string.format(
+            [[spaces["space"].format["x"].type: interval type ]] ..
+            [[isn't allowed in your Tarantool version (%s)]],
+            _TARANTOOL
+        ))
+    end
 end
 
 function g.test_scalar_types()

test/helper.lua

@@ -54,6 +54,11 @@ function helpers.test_space_format()
         table.insert(space_format, {name = 'datetime_nullable', type = 'datetime', is_nullable = true})
     end
 
+    if db.v(2, 10) then
+        table.insert(space_format, {name = 'interval_nonnull', type = 'interval', is_nullable = false})
+        table.insert(space_format, {name = 'interval_nullable', type = 'interval', is_nullable = true})
+    end
+
     return table.deepcopy(space_format)
 end