helpers.hpp

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#pragma once
 
#include "column_expression.hpp"
#include "condition.hpp"
#include "core.hpp"
#include "function.hpp"
#include "schema_adapter.hpp"
#include "select.hpp"
#include "value.hpp"
 
#include <string>
#include <type_traits>
#include <utility>
 
namespace relx::query {
 
template <typename Columns, TableType Table>
auto from(const SelectQuery<Columns>& query, const Table& table) {
  auto adapter = to_table(table);
  return query.template from<decltype(adapter)>(adapter);
}
 
template <typename Columns, typename Tables, typename Joins, typename Where, typename GroupBys,
          typename OrderBys, typename HavingCond, typename LimitVal, typename OffsetVal,
          TableType Table, ConditionExpr Condition>
auto join(const SelectQuery<Columns, Tables, Joins, Where, GroupBys, OrderBys, HavingCond, LimitVal,
                            OffsetVal>& query,
          const Table& table, Condition cond, JoinType type = JoinType::Inner) {
  auto adapter = to_table(table);
  return query.template join<decltype(adapter), Condition>(adapter, std::move(cond), type);
}
 
}  // namespace relx::query