public void Build(ISqExtensionBuilder builder)
{
var part = builder.GetValue <DateParts>(0);
var startdate = builder.GetExpression(1);
var endDate = builder.GetExpression(2);
var divider = 1;
string funcName;
switch (part)
{
case DateParts.Day: funcName = "Days_Between"; break;
case DateParts.Hour: funcName = "Seconds_Between"; divider = 3600; break;
case DateParts.Minute: funcName = "Seconds_Between"; divider = 60; break;
case DateParts.Second: funcName = "Seconds_Between"; break;
case DateParts.Millisecond: funcName = "Nano100_Between"; divider = 10000; break;
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
ISqlExpression func = new SqlFunction(typeof(int), funcName, startdate, endDate);
if (divider != 1)
{
func = builder.Div(func, divider);
}
builder.ResultExpression = func;
}
public void Build(ISqExtensionBuilder builder)
{
var part = builder.GetValue <DateParts>(0);
var startDate = builder.GetExpression(1);
var endDate = builder.GetExpression(2);
var secondsExpr = builder.Mul <int>(builder.Sub <int>(
new SqlFunction(typeof(int), "Days", endDate),
new SqlFunction(typeof(int), "Days", startDate)),
new SqlValue(86400));
var midnight = builder.Sub <int>(
new SqlFunction(typeof(int), "MIDNIGHT_SECONDS", endDate),
new SqlFunction(typeof(int), "MIDNIGHT_SECONDS", startDate));
var resultExpr = builder.Add <int>(secondsExpr, midnight);
switch (part)
{
case DateParts.Day: resultExpr = builder.Div(resultExpr, 86400); break;
case DateParts.Hour: resultExpr = builder.Div(resultExpr, 3600); break;
case DateParts.Minute: resultExpr = builder.Div(resultExpr, 60); break;
case DateParts.Second: break;
case DateParts.Millisecond:
resultExpr = builder.Add <int>(
builder.Mul(resultExpr, 1000),
builder.Div(
builder.Sub <int>(
new SqlFunction(typeof(int), "MICROSECOND", endDate),
new SqlFunction(typeof(int), "MICROSECOND", startDate)),
1000));
break;
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
builder.ResultExpression = resultExpr;
}
public void Build(ISqExtensionBuilder builder)
{
var part = builder.GetValue <DateParts>("part");
var date = builder.GetExpression("date");
var number = builder.GetExpression("number", true);
string function;
switch (part)
{
case DateParts.Year: function = "Add_Years"; break;
case DateParts.Quarter:
function = "Add_Months";
number = builder.Mul(number, 3);
break;
case DateParts.Month: function = "Add_Months"; break;
case DateParts.DayOfYear:
case DateParts.Day:
case DateParts.WeekDay: function = "Add_Days"; break;
case DateParts.Week:
function = "Add_Days";
number = builder.Mul(number, 7);
break;
case DateParts.Hour:
function = "Add_Seconds";
number = builder.Mul(number, 3600);
break;
case DateParts.Minute:
function = "Add_Seconds";
number = builder.Mul(number, 60);
break;
case DateParts.Second: function = "Add_Seconds"; break;
case DateParts.Millisecond:
function = "Add_Seconds";
number = builder.Div(number, 1000);
break;
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
builder.ResultExpression = new SqlFunction(typeof(DateTime?), function, date, number);
}
public void Build(ISqExtensionBuilder builder)
{
string?partStr = null;
var part = builder.GetValue <DateParts>("part");
switch (part)
{
case DateParts.Year: partStr = "Y"; break;
case DateParts.Quarter:
builder.Expression = "Cast(strFTime('%m', {date}) as int)";
builder.ResultExpression = builder.Inc(builder.Div(builder.Dec(builder.ConvertToSqlExpression(Precedence.Primary)), 3));
return;
case DateParts.Month: partStr = "m"; break;
case DateParts.DayOfYear: partStr = "j"; break;
case DateParts.Day: partStr = "d"; break;
case DateParts.Week: partStr = "W"; break;
case DateParts.WeekDay:
builder.Expression = "Cast(strFTime('%w', {date}) as int)";
builder.ResultExpression = builder.Inc(builder.ConvertToSqlExpression(Precedence.Primary));
return;
case DateParts.Hour: partStr = "H"; break;
case DateParts.Minute: partStr = "M"; break;
case DateParts.Second: partStr = "S"; break;
case DateParts.Millisecond:
builder.Expression = "Cast(strFTime('%f', {date}) * 1000 as int) % 1000";
builder.Extension.Precedence = Precedence.Multiplicative;
break;
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
if (partStr != null)
{
builder.AddExpression("part", partStr);
}
}
public void Build(ISqExtensionBuilder builder)
{
string partStr;
var part = builder.GetValue <DateParts>("part");
switch (part)
{
case DateParts.Year: partStr = "year"; break;
case DateParts.Quarter:
builder.Expression = "Extract(Month from {date})";
builder.ResultExpression = builder.Inc(builder.Div(builder.Dec(builder.ConvertToSqlExpression(Precedence.Primary)), 3));
return;
case DateParts.Month: partStr = "month"; break;
case DateParts.DayOfYear: partStr = "yearday"; break;
case DateParts.Day: partStr = "day"; break;
case DateParts.Week: partStr = "week"; break;
case DateParts.WeekDay: partStr = "weekday"; break;
case DateParts.Hour: partStr = "hour"; break;
case DateParts.Minute: partStr = "minute"; break;
case DateParts.Second: partStr = "second"; break;
case DateParts.Millisecond: partStr = "millisecond"; break;
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
builder.AddExpression("part", partStr);
switch (part)
{
case DateParts.DayOfYear:
case DateParts.WeekDay:
builder.ResultExpression = builder.Inc(builder.ConvertToSqlExpression(Precedence.Primary));
break;
}
}
public void Build(ISqExtensionBuilder builder)
{
string partStr;
var part = builder.GetValue <DateParts>("part");
switch (part)
{
case DateParts.Year: partStr = "To_Number(To_Char({date}, 'YYYY'))"; break;
case DateParts.Quarter: partStr = "To_Number(To_Char({date}, 'Q'))"; break;
case DateParts.Month: partStr = "To_Number(To_Char({date}, 'MM'))"; break;
case DateParts.DayOfYear: partStr = "To_Number(To_Char({date}, 'DDD'))"; break;
case DateParts.Day: partStr = "To_Number(To_Char({date}, 'DD'))"; break;
case DateParts.Week: partStr = "To_Number(To_Char({date}, 'WW'))"; break;
case DateParts.WeekDay: partStr = "DayOfWeek({date})"; break;
case DateParts.Hour: partStr = "To_Number(To_Char({date}, 'HH24'))"; break;
case DateParts.Minute: partStr = "To_Number(To_Char({date}, 'MI'))"; break;
case DateParts.Second: partStr = "To_Number(To_Char({date}, 'SS'))"; break;
case DateParts.Millisecond:
{
builder.Expression = "To_Number(To_Char({date}, 'FF'))";
builder.ResultExpression = builder.Div(builder.ConvertToSqlExpression(Precedence.Primary), 1000);
return;
}
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
builder.Expression = partStr;
}
public void Build(ISqExtensionBuilder builder)
{
string exprStr;
var part = builder.GetValue <DateParts>("part");
switch (part)
{
case DateParts.Year: exprStr = "Year({date})"; break;
case DateParts.Quarter:
{
builder.Expression = "Month({date})";
builder.ResultExpression =
builder.Inc(builder.Div(builder.Dec(builder.ConvertToSqlExpression(Precedence.Primary)), 3));
return;
}
case DateParts.Month: exprStr = "Month({date})"; break;
case 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 DateParts.Day: exprStr = "Day({date})"; break;
case 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 DateParts.WeekDay:
{
builder.Expression = "weekDay({date})";
builder.ResultExpression = builder.Inc(builder.ConvertToSqlExpression(Precedence.Primary));
return;
}
case DateParts.Hour: exprStr = "({date}::datetime Hour to Hour)::char(3)::int"; break;
case DateParts.Minute: exprStr = "({date}::datetime Minute to Minute)::char(3)::int"; break;
case DateParts.Second: exprStr = "({date}::datetime Second to Second)::char(3)::int"; break;
case DateParts.Millisecond: exprStr = "Millisecond({date})"; break;
default:
throw new InvalidOperationException($"Unexpected datepart: {part}");
}
builder.Expression = exprStr;
}
