/// <summary>
/// Convierte una cláusula de INSERT a string.
/// Si el INSERT devuelve valores.
///
/// Devuelve ya sea un <see cref="InsertNoReturningStrResult"/> o un <see cref="InsertReturningToStr"/>
/// </summary>
public static StatementToStrResult InsertToString(InsertClause clause, ParamMode paramMode, SqlParamDic paramDic)
{
var b = new StringBuilder();
b.Append("INSERT INTO ");
b.Append($"\"{clause.Table}\" ");
if ((clause.Value == null) == (clause.Query == null))
{
throw new ArgumentException("Query debe de ser null si value no es null");
}
if (clause.Value != null)
{
b.Append(InsertValueToString(clause, paramMode, paramDic));
}
else
{
//Query
var sqlQuery = SqlSelect.SelectToStringScalar(clause.Query, paramMode, paramDic);
//Texto de las columnas:
b.Append("(");
b.Append(string.Join(", ", sqlQuery.Columns));
b.AppendLine(")");
b.Append(sqlQuery.Sql);
}
if (clause.OnConflict != null)
{
b.AppendLine();
b.Append(OnConflict(clause.OnConflict, paramMode, paramDic, clause.Table));
}
//Columnas del returning
IReadOnlyList <string> columns = null;
if (clause.Returning != null)
{
b.AppendLine();
var returning = ReturningToString(clause.Returning, paramMode, paramDic, clause.Table);
b.Append(returning.sql);
columns = returning.cols;
}
var sql = b.ToString();
if (columns != null)
{
return(new InsertReturningToStr(sql, columns));
}
return(new InsertNoReturningStrResult(sql));
}