public void Build(Sql.ISqExtensionBuilder builder)
{
var startDate = builder.GetExpression(1);
var endDate = builder.GetExpression(2);
var secondsExpr = builder.Mul <int>(builder.Sub <int>(new SqlFunction(typeof(int), "Days", endDate), new SqlFunction(typeof(int), "Days", startDate)), new SqlValue(86400));
var midnight = builder.Sub <int>(new SqlFunction(typeof(int), "MIDNIGHT_SECONDS", endDate), new SqlFunction(typeof(int), "MIDNIGHT_SECONDS", startDate));
var resultExpr = builder.Add <int>(secondsExpr, midnight);
resultExpr = builder.GetValue <Sql.DateParts>(0) switch {
Sql.DateParts.Day => builder.Div(resultExpr, 86400),
Sql.DateParts.Hour => builder.Div(resultExpr, 3600),
Sql.DateParts.Minute => builder.Div(resultExpr, 60),
Sql.DateParts.Millisecond => builder.Add <int>(builder.Mul(resultExpr, 1000), builder.Div(builder.Sub <int>(new SqlFunction(typeof(int), "MICROSECOND", endDate), new SqlFunction(typeof(int), "MICROSECOND", startDate)), 1000)),
_ => throw new ArgumentOutOfRangeException()
};
builder.ResultExpression = resultExpr;
}
}
public void Build(Sql.ISqExtensionBuilder builder)
{
var part = builder.GetValue <Sql.DateParts>(0);
var startDate = builder.GetExpression(1);
var endDate = builder.GetExpression(2);
var secondsExpr = builder.Mul <int>(builder.Sub <int>(
new SqlFunction(typeof(int), "Days", endDate),
new SqlFunction(typeof(int), "Days", startDate)),
new SqlValue(86400));
var midnight = builder.Sub <int>(
new SqlFunction(typeof(int), "MIDNIGHT_SECONDS", endDate),
new SqlFunction(typeof(int), "MIDNIGHT_SECONDS", startDate));
var resultExpr = builder.Add <int>(secondsExpr, midnight);
switch (part)
{
case Sql.DateParts.Day: resultExpr = builder.Div(resultExpr, 86400); break;
case Sql.DateParts.Hour: resultExpr = builder.Div(resultExpr, 3600); break;
case Sql.DateParts.Minute: resultExpr = builder.Div(resultExpr, 60); break;
case Sql.DateParts.Second: break;
case Sql.DateParts.Millisecond:
resultExpr = builder.Add <int>(
builder.Mul(resultExpr, 1000),
builder.Div(
builder.Sub <int>(
new SqlFunction(typeof(int), "MICROSECOND", endDate),
new SqlFunction(typeof(int), "MICROSECOND", startDate)),
1000));
break;
default:
throw new ArgumentOutOfRangeException();
}
builder.ResultExpression = resultExpr;
}
public void Build(Sql.ISqExtensionBuilder builder)
{
var part = builder.GetValue <Sql.DateParts>("part");
var date = builder.GetExpression("date");
var number = builder.GetExpression("number");
string function;
switch (part)
{
case Sql.DateParts.Year: function = "Add_Years"; break;
case Sql.DateParts.Quarter:
function = "Add_Months";
number = builder.Mul(number, 3);
break;
case Sql.DateParts.Month: function = "Add_Months"; break;
case Sql.DateParts.DayOfYear:
case Sql.DateParts.Day:
case Sql.DateParts.WeekDay: function = "Add_Days"; break;
case Sql.DateParts.Week:
function = "Add_Days";
number = builder.Mul(number, 7);
break;
case Sql.DateParts.Hour:
function = "Add_Seconds";
number = builder.Mul(number, 3600);
break;
case Sql.DateParts.Minute:
function = "Add_Seconds";
number = builder.Mul(number, 60);
break;
case Sql.DateParts.Second: function = "Add_Seconds"; break;
case Sql.DateParts.Millisecond:
function = "Add_Seconds";
number = builder.Div(number, 1000);
break;
default:
throw new ArgumentOutOfRangeException();
}
builder.ResultExpression = new SqlFunction(typeof(DateTime?), function, date, number);
}
public void Build(Sql.ISqExtensionBuilder builder)
{
string?partStr = null;
var part = builder.GetValue <Sql.DateParts>("part");
switch (part)
{
case Sql.DateParts.Year: partStr = "Y"; break;
case Sql.DateParts.Quarter:
builder.Expression = "Cast(strFTime('%m', {date}) as int)";
builder.ResultExpression = builder.Inc(builder.Div(builder.Dec(builder.ConvertToSqlExpression(Precedence.Primary)), 3));
break;
case Sql.DateParts.Month: partStr = "m"; break;
case Sql.DateParts.DayOfYear: partStr = "j"; break;
case Sql.DateParts.Day: partStr = "d"; break;
case Sql.DateParts.Week: partStr = "W"; break;
case Sql.DateParts.WeekDay:
builder.Expression = "Cast(strFTime('%w', {date}) as int)";
builder.ResultExpression = builder.Inc(builder.ConvertToSqlExpression(Precedence.Primary));
break;
case Sql.DateParts.Hour: partStr = "H"; break;
case Sql.DateParts.Minute: partStr = "M"; break;
case Sql.DateParts.Second: partStr = "S"; break;
case Sql.DateParts.Millisecond:
builder.Expression = "Cast(strFTime('%f', {date}) * 1000 as int) % 1000";
builder.Extension.Precedence = Precedence.Multiplicative;
break;
default:
throw new ArgumentOutOfRangeException(nameof(part), part, null);
}
if (partStr != null)
{
builder.AddExpression("part", partStr);
}
}
public void Build(Sql.ISqExtensionBuilder builder)
{
string partStr;
var part = builder.GetValue <Sql.DateParts>("part");
switch (part)
{
case Sql.DateParts.Year: partStr = "year"; break;
case Sql.DateParts.Quarter:
builder.Expression = "Extract(Month from {date})";
builder.ResultExpression = builder.Inc(builder.Div(builder.Dec(builder.ConvertToSqlExpression(Precedence.Primary)), 3));
return;
case Sql.DateParts.Month: partStr = "month"; break;
case Sql.DateParts.DayOfYear: partStr = "yearday"; break;
case Sql.DateParts.Day: partStr = "day"; break;
case Sql.DateParts.Week: partStr = "week"; break;
case Sql.DateParts.WeekDay: partStr = "weekday"; break;
case Sql.DateParts.Hour: partStr = "hour"; break;
case Sql.DateParts.Minute: partStr = "minute"; break;
case Sql.DateParts.Second: partStr = "second"; break;
case Sql.DateParts.Millisecond: partStr = "millisecond"; break;
default:
throw new ArgumentOutOfRangeException();
}
builder.AddExpression("part", partStr);
switch (part)
{
case Sql.DateParts.DayOfYear:
case Sql.DateParts.WeekDay:
builder.ResultExpression = builder.Inc(builder.ConvertToSqlExpression(Precedence.Primary));
break;
}
}
public void Build(Sql.ISqExtensionBuilder builder)
{
string partStr;
var part = builder.GetValue <Sql.DateParts>("part");
switch (part)
{
case Sql.DateParts.Year: partStr = "To_Number(To_Char({date}, 'YYYY'))"; break;
case Sql.DateParts.Quarter: partStr = "To_Number(To_Char({date}, 'Q'))"; break;
case Sql.DateParts.Month: partStr = "To_Number(To_Char({date}, 'MM'))"; break;
case Sql.DateParts.DayOfYear: partStr = "To_Number(To_Char({date}, 'DDD'))"; break;
case Sql.DateParts.Day: partStr = "To_Number(To_Char({date}, 'DD'))"; break;
case Sql.DateParts.Week: partStr = "To_Number(To_Char({date}, 'WW'))"; break;
case Sql.DateParts.WeekDay: partStr = "DayOfWeek({date})"; break;
case Sql.DateParts.Hour: partStr = "To_Number(To_Char({date}, 'HH24'))"; break;
case Sql.DateParts.Minute: partStr = "To_Number(To_Char({date}, 'MI'))"; break;
case Sql.DateParts.Second: partStr = "To_Number(To_Char({date}, 'SS'))"; break;
case Sql.DateParts.Millisecond:
{
builder.Expression = "To_Number(To_Char({date}, 'FF'))";
builder.ResultExpression = builder.Div(builder.ConvertToSqlExpression(Precedence.Primary), 1000);
return;
}
default:
throw new ArgumentOutOfRangeException();
}
builder.Expression = partStr;
}
public static ISqlExpression Div(this Sql.ISqExtensionBuilder builder, ISqlExpression expr1, int value)
{
return(builder.Div <int>(expr1, new SqlValue(value)));
}
public static ISqlExpression Div <T>(this Sql.ISqExtensionBuilder builder, ISqlExpression expr1, ISqlExpression expr2)
{
return(builder.Div(expr1, expr2, typeof(T)));
}
public void Build(Sql.ISqExtensionBuilder builder)
{
string exprStr;
var part = builder.GetValue <Sql.DateParts>("part");
switch (part)
{
case Sql.DateParts.Year: exprStr = "Year({date})"; break;
case Sql.DateParts.Quarter:
{
builder.Expression = "Month({date})";
builder.ResultExpression =
builder.Inc(builder.Div(builder.Dec(builder.ConvertToSqlExpression(Precedence.Primary)), 3));
return;
}
case Sql.DateParts.Month: exprStr = "Month({date})"; break;
case Sql.DateParts.DayOfYear:
{
var param = builder.GetExpression("date");
builder.ResultExpression = builder.Inc(
builder.Sub <int>(
new SqlFunction(typeof(DateTime?), "Mdy",
new SqlFunction(typeof(int?), "Month", param),
new SqlFunction(typeof(int?), "Day", param),
new SqlFunction(typeof(int?), "Year", param)),
new SqlFunction(typeof(DateTime?), "Mdy",
new SqlValue(1),
new SqlValue(1),
new SqlFunction(typeof(int?), "Year", param)))
);
return;
}
case Sql.DateParts.Day: exprStr = "Day({date})"; break;
case Sql.DateParts.Week: exprStr = "((Extend({date}, year to day) - (Mdy(12, 31 - WeekDay(Mdy(1, 1, year({date}))), Year({date}) - 1) + Interval(1) day to day)) / 7 + Interval(1) day to day)::char(10)::int"; break;
case Sql.DateParts.WeekDay:
{
builder.Expression = "weekDay({date})";
builder.ResultExpression = builder.Inc(builder.ConvertToSqlExpression(Precedence.Primary));
return;
}
case Sql.DateParts.Hour: exprStr = "({date}::datetime Hour to Hour)::char(3)::int"; break;
case Sql.DateParts.Minute: exprStr = "({date}::datetime Minute to Minute)::char(3)::int"; break;
case Sql.DateParts.Second: exprStr = "({date}::datetime Second to Second)::char(3)::int"; break;
case Sql.DateParts.Millisecond: exprStr = "Millisecond({date})"; break;
default:
throw new ArgumentOutOfRangeException();
}
builder.Expression = exprStr;
}
public void Build(Sql.ISqExtensionBuilder builder)
{
var part = builder.GetValue <Sql.DateParts>("part");
var date = builder.GetExpression("date");
var number = builder.GetExpression("number");
switch (part)
{
case Sql.DateParts.Year:
builder.ResultExpression = new SqlFunction(typeof(DateTime?), "Add_Months", date, builder.Mul(number, 12));
break;
case Sql.DateParts.Quarter:
builder.ResultExpression = new SqlFunction(typeof(DateTime?), "Add_Months", date, builder.Mul(number, 3));
break;
case Sql.DateParts.Month:
builder.ResultExpression = new SqlFunction(typeof(DateTime?), "Add_Months", builder.GetExpression("date"), builder.GetExpression("number"));
break;
case Sql.DateParts.DayOfYear:
case Sql.DateParts.WeekDay:
case Sql.DateParts.Day: builder.ResultExpression = builder.Add <DateTime>(date, number); break;
case Sql.DateParts.Week: builder.ResultExpression = builder.Add <DateTime>(date, builder.Mul(number, 7)); break;
case Sql.DateParts.Hour: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 24)); break;
case Sql.DateParts.Minute: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 60 * 24)); break;
case Sql.DateParts.Second: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 60 * 60 * 24)); break;
// adding number to timestamp instead of adding interval leads to wrong result type and loose of precision
case Sql.DateParts.Millisecond: builder.ResultExpression = builder.Add <DateTime>(date, builder.Mul(new SqlExpression("interval '0.001' second", Precedence.Primary), number, typeof(int))); break;
default:
throw new ArgumentOutOfRangeException();
}
}
public void Build(Sql.ISqExtensionBuilder builder)
{
var part = builder.GetValue <Sql.DateParts>("part");
var date = builder.GetExpression("date");
var number = builder.GetExpression("number");
switch (part)
{
case Sql.DateParts.Year:
builder.ResultExpression = new SqlFunction(typeof(DateTime?), "Add_Months", date, builder.Mul(number, 12));
break;
case Sql.DateParts.Quarter:
builder.ResultExpression = new SqlFunction(typeof(DateTime?), "Add_Months", date, builder.Mul(number, 3));
break;
case Sql.DateParts.Month:
builder.ResultExpression = new SqlFunction(typeof(DateTime?), "Add_Months", builder.GetExpression("date"), builder.GetExpression("number"));
break;
case Sql.DateParts.DayOfYear:
case Sql.DateParts.WeekDay:
case Sql.DateParts.Day: builder.ResultExpression = builder.Add <DateTime>(date, number); break;
case Sql.DateParts.Week: builder.ResultExpression = builder.Add <DateTime>(date, builder.Mul(number, 7)); break;
case Sql.DateParts.Hour: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 24)); break;
case Sql.DateParts.Minute: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 60 * 24)); break;
case Sql.DateParts.Second: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 60 * 60 * 24)); break;
case Sql.DateParts.Millisecond: builder.ResultExpression = builder.Add <DateTime>(date, builder.Div(number, 1000 * 60 * 60 * 24)); break;
default:
throw new ArgumentOutOfRangeException();
}
}
