[SQL] add support for TSQL ALTER TABLE ... WITH CHECK and temp tables

SQL/TSQL.sublime-syntax

@@ -125,6 +125,11 @@ contexts:
       push:
         - expect-user-name
 
+  alter-table-args:
+    - meta_prepend: true
+    - match: \b(?i:with\s+check\b)
+      scope: keyword.other.ddl.tsql
+
   target-options:
     - meta_prepend: true
     - include: with-table-options
@@ -1056,6 +1061,8 @@ contexts:
   inside-simple-identifier-part:
     - meta_prepend: true
     - include: variables
+    - match: \#
+      scope: punctuation.definition.variable.tsql
 
 ###[ LITERALS ]################################################################
 

SQL/tests/syntax/syntax_test_tsql.sql

@@ -649,7 +649,8 @@ INNER JOIN bar (NOLOCK) ON bar.Title = foo.Title COLLATE DATABASE_DEFAULT AND IS
 SELECT DISTINCT *
 INTO ##global_temp_table
 -- ^ keyword.other.dml
---   ^^^^^^^^^^^^^^^^^^^ meta.table-name
+--   ^^ meta.table-name.sql punctuation.definition.variable.tsql
+--     ^^^^^^^^^^^^^^^^^ meta.table-name - punctuation
 FROM some_long_table_name s
 LEFT OUTER JOIN another_long_table_name (NOLOCK) a ON s.blah = a.blah AND ISNULL(p.ok, '') = ISNULL(a.ok, '') COLLATE DATABASE_DEFAULT
 -- ^^^^^^^^^^^^ keyword.other.dml
@@ -739,7 +740,8 @@ into #temp
 --   ^^^^^ meta.table-name
 from @A A
 -- ^ keyword.other.dml
---   ^^ meta.table-name.sql variable.other.readwrite.sql
+--   ^ meta.table-name.sql variable.other.readwrite.sql punctuation.definition.variable.sql
+--    ^ meta.table-name.sql variable.other.readwrite.sql
 --      ^ meta.table-alias-name
 inner join B ON (SELECT TOP 1 C.ID FROM C WHERE C.B LIKE B.C + '%' ORDER BY LEN(B.C) DESC) = B.ID
 --^^^^^^^^ keyword.other.dml
@@ -2522,3 +2524,34 @@ SELECT main.id, other.another_field
 FROM @table_variable AS main
 CROSS JOIN some_func(@param) AS other
 -- ^^^^^^^ keyword.other.dml.sql
+
+DROP TABLE IF EXISTS #SampleTempTable;
+GO
+CREATE TABLE #SampleTempTable (id INT, message nvarchar(50));
+-- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ meta.statement.create.sql
+-- ^^^ keyword.other.ddl.sql
+--           ^^^^^^^^^^^^^^^^ meta.table.sql entity.name.struct.table.sql
+--           ^ punctuation.definition.variable.tsql
+INSERT INTO #SampleTempTable VALUES (null, 'hello');
+-- ^^^^^^^^ keyword.other.dml.sql
+--          ^ meta.table-name.sql punctuation.definition.variable.tsql
+--           ^^^^^^^^^^^^^^^ meta.table-name.sql - punctuation
+INSERT INTO #SampleTempTable VALUES (10, null);
+INSERT INTO #SampleTempTable VALUES (17, 'abc');
+INSERT INTO #SampleTempTable VALUES (17, 'yes');
+INSERT INTO #SampleTempTable VALUES (null, null);
+GO
+
+SELECT * FROM #SampleTempTable WHERE id IS DISTINCT FROM 17;
+DROP TABLE IF EXISTS #SampleTempTable;
+GO
+
+ALTER TABLE a.b WITH CHECK
+--              ^^^^^^^^^^ meta.statement.alter.sql keyword.other.ddl.tsql
+    ADD CONSTRAINT fk_b_c
+--  ^^^^^^^^^^^^^^^^^^^^^^ meta.statement.alter.sql
+--  ^^^ keyword.other.ddl.sql
+--      ^^^^^^^^^^ keyword.other.ddl.sql
+--                 ^^^^^^ meta.constraint-name.sql
+    FOREIGN KEY (some_id) REFERENCES a.c (some_id);
+--  ^^^^^^^^^^^ meta.statement.alter.sql storage.modifier.sql