In a school website, I want to enable the admin to filter students based on date range when they were born. Dates in my tblStudent are stored as strings, so I cannot use:
SELECT ts.Name from tblStudent ts WHERE ts.BirthDay>'1367/01/31' AND ts.BirthDay<'1377/01/31'
I have saved dates (Jalali Format) in database table tblStudent. I need to do comparison based on dates. So I need to convert date strings to date type in sql server. To this purpose I used:
SELECT convert(date,tblStudent.BirthDay) from tblStudent
However,It stops after 27 results with the following error
Msg 241, Level 16, State 1, Line 1
Conversion failed when converting date and/or time from character string.
I have the following date strings in my tblStudent table.
1379/09/01
1375/04/20
1378/03/02
1378/03/21
1378/04/18
1378/04/18
1378/05/05
1375/04/20
1379/01/03
1378/03/01
1370/09/09
1378/03/22
1375/09/15
1379/09/01
1379/09/10
1375/04/08
1375/05/06
1370/09/09
1379/10/10
1375/04/10
1375/11/01
1375/04/04
1375/08/11
1375/05/05
1376/09/19
1375/12/12
1376/01/13
1375/15/10
1375/04/14
1375/04/04
1375/05/14
1374/11/11
1375/05/30
1375/05/14
1377/12/13
1377/02/31
1377/12/14
1377/01/13
1375/05/31
1377/11/05
1377/07/05
1375/05/31
1377/03/01
1377/04/01
1377/05/02
1377/05/04
1377/03/03
1377/01/14
1377/05/30
1377/04/31
1375/05/30
1376/06/12
1375/12/10
1377/08/14
1377/03/04
1375/04/08
1375/07/18
1375/08/09
1375/09/12
1375/11/12
1376/12/12
1375/01/02
1375/05/09
1375/04/09
1376/01/01
1375/01/30
1377/04/04
1375/05/23
1375/05/01
1377/02/01
1367/12/05
1375/05/31
1373/03/29
1373/03/03
1375/05/05
Is there a way to convert these string dates to date type and then compare them with some query? For example, such a query can be:
SELECT ts.Name from tblStudent ts where ts.BirthDay>'1375/05/31'
I think you can make them ints and compare them:
SELECT ts.Name
FROM tblStudent ts
WHERE CONVERT(INT,REPLACE(ts.BirthDay,'/','') > 13670131
AND CONVERT(INT,REPLACE(ts.BirthDay,'/','') < 13770131
Or for your second example:
SELECT ts.Name
FROM tblStudent ts
WHERE CONVERT(INT,REPLACE(ts.BirthDay,'/','') > 13750531
This would work because having the order Year-Month-Day will ensure that the int representation of a later time will be greater than the int representation of an earlier time.
I really do not know if this is the best idea, but it is an idea of how to do it. After all you would be using a conversion.
From C# you have a few options:
If your input is string:
var dateInt = Int32.Parse(dateString.Replace("/",""));
If your input is Date then:
var dateInt = Int32.Parse(dateValue.ToString("yyyyMMdd"));
You could also pass the string itself in the db and let the db do the work for you :
DECLARE #Date AS VARCHAR(10)
SET #Date = ...--This will be filled with the inputed string
DECLARE #DateINT AS INT
SET #DateINT = CONVERT(INT,REPLACE(#Date,"/",""))
Related
I'm trying to insert date into temporary table, but it's not saving any data. How should I change cursor date parameters?
The procedure is running without any error message but output xx_cdf_output_utl$.log('inside loop'); is not working.
xx_cdf_output_utl$.log('after loop'); log is printing fine.
Right now added three parameters: p_date_from (date), p_date_to (date), p_line_type_lookup_code (varchar2)
procedure gather_data(
-- p_valid_invoices_count out number,
-- p_invalid_invoices_count out number,
p_date_from in date,
p_date_to in date,
p_line_type_lookup_code in varchar2) is
ROUTINE constant varchar2(65) := PACKAGE_NAME||'.GATHER_DATA';
cursor c_inv(
p_date_from in date,
p_date_to in date,
p_line_type_lookup_code in varchar2) is
select
inv.invoice_id,
inv.invoice_num,
inv.invoice_amount,
inv.invoice_date,
inv.amount_paid,
pas.gross_amount,
pas.payment_num,
ven.vendor_id,
ven.vendor_name
from
ap_invoices_all inv, -- invoice table
ap_payment_schedules_all pas, -- payment schedules table
po_vendors ven -- vendors table
where
inv.invoice_date between p_date_from and p_date_to and
inv.wfapproval_status in (
'NOT REQUIRED',
'WFAPPROVED',
'MANUALLY APPROVED') and
pas.amount_remaining != 0 and
nvl(pas.hold_flag, 'N') != 'Y' and
(p_line_type_lookup_code is not null and
exists(
select
1
from
ap_invoice_distributions_all ind -- distribution table
where
ind.amount != 0 and
ind.line_type_lookup_code = p_line_type_lookup_code and
ind.invoice_id = inv.invoice_id) or
p_line_type_lookup_code is null) and
pas.invoice_id = inv.invoice_id and
ven.vendor_id = inv.vendor_id;
l_date_from date := nvl(to_date(p_date_from, 'yyyy-mm-dd'), to_date('2019-01-01', 'YYYY-MM-DD'));
l_date_to date := nvl(to_date(p_date_to, 'yyyy-mm-dd'), trunc(to_date(sysdate, 'YYYY-MM-DD')));
l_line_type_lookup_code varchar2(240) := p_line_type_lookup_code;
begin
for l_inv_rec in c_inv(
l_date_from,
l_date_to,
l_line_type_lookup_code)
loop
xx_cdf_output_utl$.log('inside loop');
insert into xx_zm_invoice_temp(
invoice_id,
invoice_num,
invoice_amount,
invoice_date,
amount_paid,
gross_amount,
payment_num,
vendor_id,
vendor_name)
-- vendor_amount_total,
-- vendor_amount_valid_flg)
values(
l_inv_rec.invoice_id,
l_inv_rec.invoice_num,
l_inv_rec.invoice_amount,
l_inv_rec.invoice_date,
l_inv_rec.amount_paid,
l_inv_rec.gross_amount,
l_inv_rec.payment_num,
l_inv_rec.vendor_id,
l_inv_rec.vendor_name);
end loop;
xx_cdf_output_utl$.log('after loop');
exception
when xx_cdf_error_utl$.e_internal_exception then
xx_cdf_error_utl$.raise_error;
when others then
xx_cdf_error_utl$.output_unexp_exception(
p_routine => ROUTINE);
end;
When you do:
l_date_from date := nvl(to_date(p_date_from, 'yyyy-mm-dd'), to_date('2019-01-01', 'YYYY-MM-DD'));
l_date_to date := nvl(to_date(p_date_to, 'yyyy-mm-dd'), trunc(to_date(sysdate, 'YYYY-MM-DD')));
the
to_date(p_date_to, 'yyyy-mm-dd')
has to convert p_date from a date to a string first, and it will use the session NLS parameters to do that. As it isn't erroring I imagine your date format has a 2-digit year, possibly the kind-of-default DD-MON-RR. You are effectively doing something like:
to_date(to_char(p_date_to, 'dd-mon-rr'), 'yyyy-mm-dd')
which would translate today's date to 0023-03-20, which isn't what you intended at all. You end up looking for a range of dates in year 0023, or maybe 0020, so it's not surprising you do't find any matching data.
You don't need to convert the parameters to or from strings, you can do:
l_date_from date := nvl(p_date_from, date '2019-01-01');
l_date_to date := nvl(p_date_to, trunc(sysdate));
You can truncate the parameter values if you think that might be necessary, but with a trunc() call, not by bouncing through strings.
You don't really need l_date_from or l_date_to though (or l_line_type_lookup_code); you could do the nvl() firstly in the cursor call:
for l_inv_rec in c_inv(
nvl(p_date_from, date '2019-01-01'),
nvl(p_date_to, trunc(sysdate)),
p_line_type_lookup_code)
Having the same name for the procedure parameters and the cursor parameters might be confusing - though the way you're currently using them, the cursor doesn't really need the parameters - it can refer directly to the procedure values, and use nvl() internally:
inv.invoice_date between nvl(p_date_from, date '2019-01-01') and nvl(p_date_to, trunc(sysdate)) and
I'm always a bit wary of using between with dates because it's easy to forget it's inclusive, and you can accidentally pick up the same data - at exactly midnight - in more than one call. It's a bit safer and clearer to use a range:
inv.invoice_date >= nvl(p_date_from, date '2019-01-01') and
inv.invoice_date < nvl(p_date_to, trunc(sysdate)) and
decided explicitly if the last condition should use < or <=. The latter is usually what you mean if the table values have non-midnight times.
And you could use an implicit cursor, but that's partly a matter of taste...
You could even give your procedure arguments default values, but you might be restricted in how it's called.
While running the below code i get an error saying invalid input syntax for type timestamp from admission_datetime.
UPDATE ccsm.stg_demographics_baseline
SET xx_los_days =
(CASE WHEN admission_datetime IS NULL OR
date_trunc('day',admission_datetime) = ''
THEN NULL
WHEN discharge_datetime IS NULL OR
date_trunc('day',discharge_datetime) = ''
THEN date_diff('day', admission_datetime, CURRENT_DATE)
ELSE
date_diff('day', admission_datetime, discharge_datetime)
END);
enter code here
See date_trunc documentation:
The return value is of type timestamp or interval with all fields that are less significant than the selected one set to zero (or one, for day and month).
So you can not compare it with an empty string:
date_trunc('day', admission_datetime) = ''
The invalid input syntax for type timestamp error message concerns the empty string (''), not the admission_datetime column.
Furthermore, there is no date_diff function in PostgreSQL. Just subtract one timestamp from another and you will get an interval result:
SELECT timestamp '2001-09-29 03:00' - timestamp '2001-09-27 12:00'
You'll get
interval '1 day 15:00:00'
If you need the difference in days, try this:
SELECT DATE_PART('day', timestamp '2001-09-29 03:00' - timestamp '2001-09-27 12:00')
The result is 1.
See here for examples of DATEDIFF-like expressions in PostgreSQL.
is there a chance to use optional parameters in report builder?
for example: i have a query with 3 parameters
#Pa1 date
#Pa2 date
#Pa3 varchar(3)
if i run View report without inform one of then i got the message:
Select a value for the parameter #Pa3 (for example)
is it possible?
I tried to use a empty field but i got no data
select a.legajo,c.nombres,e.Descripcion,CONVERT (char(10), a.fecha, 103) as Fecha,a.hora as ENTRADA,
b.hora as SALIDA,
DATEDIFF(HOUR,a.hora,b.hora) as Horas_trabajadas,
c.hor_x_jor Horas_jornada,
DATEDIFF(HOUR,a.hora,b.hora) -hor_x_jor as Diferencia
from fichadas_in a, fichadas_out b, empleados c,sucursales d,Clasificacion e
where a.Legajo=b.Legajo
and a.fecha=b.fecha
and a.fecha between #fecha1 and #fecha2
and d.codigo=#sucursal
and a.legajo=c.legajo
and c.CCO=d.Codigo
and e.Codigo=c.Clasif
Order by a.fecha,legajo
Allow Null Values or Blank values for your parameter.
As already mentioned you need to select ALLOW BLANK VALUES, and ALLOW NULL VALUE.. But you also have to ensure your SQL knows what to do with those VALUES in your WHERE clause.
AND (
((#Pa3 IS NOT NULL AND #Pa3 != '') AND d.codigo = #Pa3)
OR
((#Pa3 IS NULL OR #Pa3 = '') AND d.codigo LIKE '%'))
)
There are other ways to do this, but make sure you account for those values/lack of values.
For the date range, I would recommend declaring another variable that calculates what the date value is before running the SELECT statement.. Create a variable that is calculates what the value is if the value is blank, null, or entered.
The variable may go in to #Pa1 but then calculates into #fecha1, then in the WHERE clause you us #fecha1.
I am trying to run this query but the query keeps giving up on me:
Update StockInvoiceInfo set Quantity = Quantity - 2 where p_id = 5 AND ProductDate = convert(Cast('31-5-2015' as datetime)) ;
After Running this code it returns an error below:
Incorrect syntax near '31-5-2015'
The datatype of the ProductDate column isDate. I am using Sql Server 2012.
You have used Convert functions but didn't supplied it with parameters. Also there is no need for this function here. Also take care of date format. I have changed it to standard format:
Update StockInvoiceInfo set Quantity = Quantity - 2
where p_id = 5 AND ProductDate = Cast('2015-05-31' as datetime)
If all you are trying to do is compare a Sql Date, then just use an agnostic format like '20150531' or easier to read '2015-05-31'. No need for casts or convert at all, i.e.
WHERE ... AND ProductDate = '2015-05-31'
However, if ProductDate isn't a date, but one of the *DATETIME* data types, and you are looking to update any time on the same day, then I believe you are looking for something like:
Update StockInvoiceInfo
set Quantity = Quantity - 2
where
p_id = 5
AND CAST(ProductDate AS DATE) = '2015-05-31';
However, the performance will be lousy as the clause isn't likely to be SARGable. You're better off simply doing:
AND ProductDate >= '2015-05-31' AND ProductDate < '2015-06-01';
(Resist the temptation to use between, or hacks like ':23:59:59' as there will be data corner cases which will bite you)
use CAST('5-31-2015' as DATETIME)
with the above update statement you started convert but with incomplete syntax
here the convert syntax
Update StockInvoiceInfo
set Quantity = Quantity - 2
where p_id = 5
AND ProductDate = convert(datetime,Cast('31-5-2015' as varchar),103) ;
I have a database in PostgreSQL and I'm developing an application in PHP using this database.
The problem is that when I execute the following query I get a nice result in phpPgAdmin but in my PHP application I get an error.
The query:
SELECT t.t_name, t.t_firstname
FROM teachers AS t
WHERE t.id_teacher IN (
SELECT id_teacher FROM teacher_course AS tcourse
JOIN course_timetable AS coursetime
ON tcourse.course = coursetime.course
AND to_char(to_timestamp('2010-4-12', 'YYYY-MM-DD'),'FMD') = (coursetime.day +1)
)
AND t.id_teacher NOT IN (
SELECT id_teacher FROM teachers_fill WHERE date = '2010-4-12'
)
ORDER BY t.t_name ASC
And this is the error in PHP
operator does not exist: text = integer (to_timestamp('', 'YYYY-MM-DD'),'FMD') =
(courset... ^ HINT: No operator matches the given name and argument type(s).
You might need to add explicit type casts.
The purpose to solve this error is to use the ORIGINAL query in php with :
$date = "2010"."-".$selected_month."-".$selected_day;
SELECT ...
AND to_char(to_timestamp('$date', 'YYYY-MM-DD'),'FMD') = (coursetime.day +1)
)
AND t.id_teacher NOT IN (
SELECT id_teacher FROM teachers_fill WHERE date = '$date'
)
The error message seems quite clear to me. You are mixing strings and numbers. More precisely, you are converting a string ('2010-4-12') to a timestamp, then to a string, then comparing to an int. This is a type mess, and postgresql is quite strict with typing (for good reasons). What are you trying to do here ?
to_char(to_timestamp('2010-4-12', 'YYYY-MM-DD'),'FMD') = (coursetime.day +1))
Further, you should use a TIMESTAMP, just a DATE.
If (I'm not sure) you are tring to compare the day of week from a date formated as 'YYYY-MM-DD' to a given value (as an integer), you should better use date_part. For example (not tested):
date_part('dow' , to_date('2010-4-12', 'YYYY-MM-DD') ) = coursetime.day + 1