Use table alias unlikely to conflict with a column name (#705)

test/Feature/QuerySpec.hs

@@ -17,6 +17,10 @@ spec = do
     it "should not confuse count column with pg_catalog.count aggregate" $
       get "/has_count_column" `shouldRespondWith` 200
 
+  describe "Querying a table with a column called t" $
+    it "should not conflict with internal postgrest table alias" $
+      get "/clashing_column?select=t" `shouldRespondWith` 200
+
   describe "Querying a nonexistent table" $
     it "causes a 404" $
       get "/faketable" `shouldRespondWith` 404

test/fixtures/privileges.sql

@@ -38,6 +38,7 @@ GRANT ALL ON TABLE
     , "Escap3e;"
     , "ghostBusters"
     , "withUnique"
+    , "clashing_column"
     , "موارد"
     , addresses
     , orders

test/fixtures/schema.sql

@@ -703,6 +703,10 @@ CREATE TABLE "withUnique" (
     extra text
 );
 
+CREATE TABLE clashing_column (
+    t text
+);
+
 
 --
 -- Name: id; Type: DEFAULT; Schema: test; Owner: -