Squashed 'subprojects/boost-sqlite/' content from commit 3378e35

git-subtree-dir: subprojects/boost-sqlite
git-subtree-split: 3378e353705271e569cf4ba15c467b840a39798c

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diff --git a/include/boost/sqlite/meta_data.hpp b/include/boost/sqlite/meta_data.hpp
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+//
+// Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BOOST_SQLITE_META_DATA_HPP
+#define BOOST_SQLITE_META_DATA_HPP
+
+#include <boost/sqlite/detail/config.hpp>
+#include <boost/sqlite/connection.hpp>
+#include <boost/sqlite/cstring_ref.hpp>
+
+BOOST_SQLITE_BEGIN_NAMESPACE
+
+
+struct connection ;
+
+/// The metadata of a column
+struct column_meta_data
+{
+    /// Data type fo the column
+    cstring_ref data_type;
+    /// Name of default collation sequence
+    cstring_ref collation;
+    /// true if column has a NOT NULL constraint
+    bool not_null;
+    /// true if column is part of the PRIMARY KEY
+    bool primary_key;
+    /// true if column is AUTOINCREMENT
+    bool auto_increment;
+};
+
+///@{
+/// get the meta-data of one colum
+BOOST_SQLITE_DECL
+column_meta_data table_column_meta_data(connection  & conn,
+                                        cstring_ref db_name, cstring_ref table_name, cstring_ref column_name,
+                                        system::error_code & ec, error_info &ei);
+BOOST_SQLITE_DECL
+column_meta_data table_column_meta_data(connection  & conn,
+                                        cstring_ref table_name, cstring_ref column_name,
+                                        system::error_code & ec, error_info &ei);
+
+BOOST_SQLITE_DECL
+column_meta_data table_column_meta_data(connection  & conn,
+                                        cstring_ref db_name, cstring_ref table_name, cstring_ref column_name);
+BOOST_SQLITE_DECL
+column_meta_data table_column_meta_data(connection  & conn,
+                                        cstring_ref table_name, cstring_ref column_name);
+///@}
+
+///
+BOOST_SQLITE_END_NAMESPACE
+
+
+#endif //BOOST_SQLITE_META_DATA_HPP