From ebf4e657e96f928d93522faade6c322bc65468b9 Mon Sep 17 00:00:00 2001
From: Matthias Queitsch <matthias.queitsch@mailbox.org>
Date: Wed, 29 Mar 2023 21:44:05 +0200
Subject: [PATCH] add `full outer` joins

---
 grammar.js             |  3 +++
 test/corpus/select.txt | 37 ++++++++++++++++++++++++++++++++++++-
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/grammar.js b/grammar.js
index 0834fd9e..5c1be049 100644
--- a/grammar.js
+++ b/grammar.js
@@ -50,6 +50,7 @@ module.exports = grammar({
     keyword_left: _ => make_keyword("left"),
     keyword_right: _ => make_keyword("right"),
     keyword_inner: _ => make_keyword("inner"),
+    keyword_full: _ => make_keyword("full"),
     keyword_outer: _ => make_keyword("outer"),
     keyword_cross: _ => make_keyword("cross"),
     keyword_join: _ => make_keyword("join"),
@@ -1677,10 +1678,12 @@ module.exports = grammar({
         choice(
           $.keyword_cross,
           $.keyword_left,
+          seq($.keyword_full, $.keyword_outer),
           seq($.keyword_left, $.keyword_outer),
           $.keyword_right,
           seq($.keyword_right, $.keyword_outer),
           $.keyword_inner,
+          $.keyword_full,
         ),
       ),
       $.keyword_join,
diff --git a/test/corpus/select.txt b/test/corpus/select.txt
index 31050918..216c6c90 100644
--- a/test/corpus/select.txt
+++ b/test/corpus/select.txt
@@ -1056,7 +1056,11 @@ ON a.id = d.d_id
 RIGHT OUTER JOIN table_d d
 ON a.id = d.d_id
 INNER JOIN table_e e
-ON a.id = e.e_id;
+ON a.id = e.e_id
+FULL OUTER JOIN table_f f
+ON a.id = f.f_id
+FULL JOIN table_g g
+ON a.id = g.g_id;
 
 --------------------------------------------------------------------------------
 
@@ -1145,6 +1149,37 @@ ON a.id = e.e_id;
             name: (identifier))
           table_alias: (identifier))
         (keyword_on)
+        predicate: (binary_expression
+          left: (field
+            table_alias: (identifier)
+            name: (identifier))
+          right: (field
+            table_alias: (identifier)
+            name: (identifier))))
+      (join
+        (keyword_full)
+        (keyword_outer)
+        (keyword_join)
+        (relation
+          (table_reference
+            name: (identifier))
+          table_alias: (identifier))
+        (keyword_on)
+        predicate: (binary_expression
+          left: (field
+            table_alias: (identifier)
+            name: (identifier))
+          right: (field
+            table_alias: (identifier)
+            name: (identifier))))
+      (join
+        (keyword_full)
+        (keyword_join)
+        (relation
+          (table_reference
+            name: (identifier))
+          table_alias: (identifier))
+        (keyword_on)
         predicate: (binary_expression
           left: (field
             table_alias: (identifier)