pk generator progress and sequence test progress

include/matador/sql/dialect.hpp

@@ -138,6 +138,7 @@ public:
   [[nodiscard]] const std::string& commit() const;
   [[nodiscard]] const std::string& constraint() const;
   [[nodiscard]] const std::string& create() const;
+  [[nodiscard]] const std::string& currval() const;
   [[nodiscard]] const std::string& desc() const;
   [[nodiscard]] const std::string& distinct() const;
   [[nodiscard]] const std::string& drop() const;
@@ -212,6 +213,7 @@ private:
     {dialect_token::Commit,      "COMMIT TRANSACTION"},
     {dialect_token::Constraint,  "CONSTRAINT"},
     {dialect_token::Create,      "CREATE"},
+    {dialect_token::CurrVal,     "CURRVAL"},
     {dialect_token::Desc,        "DESC"},
     {dialect_token::Distinct,    "DISTINCT"},
     {dialect_token::Drop,        "DROP"},

include/matador/sql/dialect_token.hpp

@@ -21,6 +21,7 @@ enum class dialect_token : uint8_t {
   Commit,
   Constraint,
   Create,
+  CurrVal,
   Database,
   Desc,
   Distinct,

include/matador/sql/error_code.hpp

@@ -18,6 +18,7 @@ enum class error_code : uint8_t {
   DESCRIBE_FAILED,
   TABLE_EXISTS_FAILED,
   RETRIEVE_DATA_FAILED,
+  SEQUENCE_EXISTS_FAILED,
   RESET_FAILED,
   OPEN_ERROR,
   CLOSE_ERROR,