constraint progress

include/matador/sql/dialect.hpp

@@ -171,6 +171,7 @@ public:
   [[nodiscard]] const std::string& start_quote() const;
   [[nodiscard]] const std::string& string_quote() const;
   [[nodiscard]] const std::string& table() const;
+  [[nodiscard]] const std::string& unique() const;
   [[nodiscard]] const std::string& update() const;
   [[nodiscard]] const std::string& values() const;
   [[nodiscard]] const std::string& where() const;
@@ -237,6 +238,7 @@ private:
     {dialect_token::StartQuote, "\""},
     {dialect_token::StringQuote, "'"},
     {dialect_token::Table,       "TABLE"},
+    {dialect_token::Unique,      "UNIQUE"},
     {dialect_token::Update,      "UPDATE"},
     {dialect_token::Values,      "VALUES"},
     {dialect_token::Where,       "WHERE"}

include/matador/sql/dialect_token.hpp

@@ -55,6 +55,7 @@ enum class dialect_token : uint8_t {
   StartQuote,
   StringQuote,
   Table,
+  Unique,
   Update,
   Values,
   Where