Add basic create-statement (#22)

examples/create.surql

@@ -0,0 +1,32 @@
+-- Create a new record
+CREATE person;
+
+-- To specify a specific ID for a table instead, use : followed by a value.
+CREATE person:one;
+
+-- Use the type::thing() function to provide a record's table and id separately
+CREATE type::thing("person", "one");
+
+-- Create a new record with a text id
+CREATE person:tobie SET
+    name = 'Tobie',
+    company = 'SurrealDB',
+    skills = ['Rust', 'Go', 'JavaScript'];
+
+-- Multiple records or even multiple record types can be created by separating table names by commas.
+CREATE townsperson, cat, dog SET
+    created_at = time::now(),
+    name = "Just a " + meta::tb(id);
+
+-- Returns just a single record
+CREATE ONLY person:tobie SET
+    name = 'Tobie',
+    company = 'SurrealDB',
+    skills = ['Rust', 'Go', 'JavaScript'];
+
+-- Return Diff
+CREATE person SET age = 46, username = "john-smith" RETURN DIFF;
+
+-- Specify a timeout
+CREATE person:john SET age = 46, username = "john-smith" TIMEOUT 500ms;
+

grammar.js

@@ -514,10 +514,9 @@ module.exports = grammar({
         $.keyword_create,
         optional($.keyword_only),
         $.create_target,
-        optional(choice($.content_clause, $.set_clause, $.unset_clause)),
+        optional(choice($.content_clause, $.set_clause)),
         optional($.return_clause),
         optional($.timeout_clause),
-        optional($.parallel_clause),
       ),
 
     update_statement: $ =>
@@ -534,7 +533,6 @@ module.exports = grammar({
                 $.merge_clause,
                 $.patch_clause,
                 $.set_clause,
-                $.unset_clause,
               ),
             ),
             optional($.where_clause),
@@ -883,14 +881,12 @@ module.exports = grammar({
     if_exists_clause: $ => seq($.keyword_if, $.keyword_exists),
 
     create_target: $ =>
-      choice($.identifier, $.variable_name, $.function_call, $.record_id),
+      choice(commaSeparated($.identifier), $.variable_name, $.function_call, $.record_id),
 
     content_clause: $ => seq($.keyword_content, $.object),
 
     set_clause: $ => seq($.keyword_set, commaSeparated($.field_assignment)),
 
-    unset_clause: $ => seq($.keyword_unset, commaSeparated($.field_assignment)),
-
     return_clause: $ =>
       seq(
         $.keyword_return,

queries/highlights.scm

@@ -149,7 +149,6 @@
   (keyword_on_duplicate_key_update)
   (keyword_count)
   (keyword_set)
-  (keyword_unset)
   (keyword_return)
   (keyword_overwrite)
   (keyword_throw)