private void DateDiff(MethodCallExpression method, StringBuilder sb, IGenerateSqlFromExpressions writer)
{
sb.Append("datediff(");
sb.Append(method.Arguments[1].GetValue().ToString()).Append(",");
sb.Append(writer.GetColumnsSql(method.Arguments[2])).Append(",");
sb.Append(writer.GetColumnsSql(method.Arguments[3]));
sb.Append(")");
}
private void Round(MethodCallExpression method, StringBuilder sb, IGenerateSqlFromExpressions writer)
{
sb.Append("round(");
sb.Append(writer.GetColumnsSql(method.Arguments[1]));
sb.Append(",");
sb.Append(writer.GetSql(method.Arguments[2]));
sb.Append(")");
}
private void MyConcat(MethodCallExpression method, StringBuilder sb, IGenerateSqlFromExpressions writer)
{
foreach (var arg in method.Arguments[1].CastAs <NewArrayExpression>().Expressions)
{
sb.Append(writer.GetColumnsSql(arg));
sb.Append(" || ");
}
sb.RemoveLastIfEquals("|| ");
}
public IGenerateSql <TProj> Select <TProj>(Expression <Func <T, TProj> > selector, bool distinct = false) => Select <TProj>(_writer.GetColumnsSql(selector), distinct);
private void Max(MethodCallExpression method, StringBuilder sb, IGenerateSqlFromExpressions manager)
=> sb.Append($"max({manager.GetColumnsSql(method.Arguments[1])})");
private void Sum(MethodCallExpression method, StringBuilder sb, IGenerateSqlFromExpressions w)
=> sb.Append($"sum({w.GetColumnsSql(method.Arguments[1])})");
public IBuildUpdateTable <T> Set(Expression <Func <T, object> > column, Expression <Func <T, object> > statement)
{
_sb.Append($"{_writer.GetColumnsSql(column)}={_writer.GetColumnsSql(statement)},");
return(this);
}
private void BetweenDates(MethodCallExpression arg1, StringBuilder sb, IGenerateSqlFromExpressions writer)
{
var date = writer.GetColumnsSql(arg1.Arguments[0]);
sb.Append($"{date}>={writer.GetSql(arg1.Arguments[1])} and {date}<={writer.GetSql(arg1.Arguments[2])}");
}
