There is a table objects, which stores data on real estate objects. Me need to use a query to calculate a new field that will display the date range from Monday to Sunday, which includes the date the object was created (for example, “2020-11-16 - 2020-11-22”)
create table objects(
object_id int NOT NULL PRIMARY KEY ,
city_id int not null ,
price int ,
area_total int ,
status varchar(50) ,
class varchar(50) ,
action varchar(50) ,
date_create timestamp,
FOREIGN KEY(city_id) references avg_price_square_city(city_id)
);
Data in the table:
INSERT INTO objects (object_id, city_id, price, area_total, status, class, action, date_create)
VALUES (1, 1, 4600000, 72, 'active', 'Secondary', 'Sale', '2022-05-12 21:49:34');
INSERT INTO objects (object_id, city_id, price, area_total, status, class, action, date_create)
VALUES (2, 2, 5400000, 84, 'active', 'Secondary', 'Sale', '2022-05-19 21:49:35');
The query should display two fields: the object number and a range that includes the date it was created. How can this be done ?
P.S
I wrote this query,but he swears at the "-" sign:
SET #WeekRangeStart ='2022/05/10';
SET #WeekRangeEnd = '2022/05/17';
select object_id,#range := #WeekRangeStart '-' #WeekRangeEnd
FROM objects where #range = #WeekRangeStart and date_create between #WeekRangeStart and #WeekRangeEnd
UNION
select object_id,#range from objects where #`range` = #WeekRangeEnd;
Error:[42000][1064] You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '#WeekRangeEnd FROM objects where #range = #WeekRangeStart and date_create betwee' at line 1
I want to receive in query:
object_id #range
1 2022/05/10 - 2022/05/17
The column #range must contain the date from the "date_create"
SET #WeekRangeStart = CAST('2022/05/10' as DATE);
SET #WeekRangeEnd = CAST('2022/05/17' as DATE);
SET #range = CONCAT(#WeekRangeStart,' - ',#WeekRangeEnd) ;
-- select #range;
select
object_id,
#range
FROM objects
where DATE(date_create) between #WeekRangeStart and #WeekRangeEnd
UNION
select object_id,#range from objects
;
Gives next result:
object_id
#range
1
2022-05-10 - 2022-05-17
2
2022-05-10 - 2022-05-17
This result is the output of the SQL part that is put after the UNION. Because date_create is not between your WeekRangeStart and WeekRangeEnd.
You should take some time, and read the UNION documentation.
The variable #range is calculated before the SQL statement, because the value is a constant.
see: DBFIDDLE
NOTE: You should try to use the same dateformat everywhere, and not mix date like '2022-05-19 21:49:35' and 2022/05/10. Use - OR use /, but do not mix them...
EDIT: After the calirification "Me need to use a query to calculate a new field that will display the date range from Monday to Sunday,...":
You probably wanted to do:
SET #WeekDate = CAST('2022/05/10' as DATETIME);
SELECT
ADDDATE(#WeekDate, -(DAYOFWEEK(#WeekDate)-1) +1) as Monday,
DATE_ADD(ADDDATE(#WeekDate, -(DAYOFWEEK(#WeekDate)-1) +9), INTERVAL -1 SECOND) as Sunday;
output:
Monday
Sunday
2022-05-09 00:00:00
2022-05-16 23:59:59
Related
I've got the use case to version objects (identified by objectOwnerId and objectId group). I insert rows to ledger table with their respective hashes.
The order of the ledger table is identified by the compound PRIMARY KEY and its timestamp up to microsecond precision + additional 3 byte entropy at the end to prevent collisions (in case multiple rows gets inserted at the same microsecond).
Once data is stored I need efficient way to get the latest hash for multiple objects at once. I've came up with a query (please see end of this post) which is built from sub-selects with JOIN and GROUP BY, but it's pretty complex I think and I am looking for ways to address my problem in a simpler (if possible) way.
Is there any way for improvement?
It would've been simpler if I have PRIMARY KEY which isn't COMPOUND, in which case I could pass the max() value upwards, however that's not the case. I was also thinking if I could merge my TIMESTAMP(6) - 7 bytes with BINARY(3) - 3 bytes and store it as BINARY(10), but wasn't sure if that's easily possible.
Please find the schema, test data and SELECT queries below.
This is my table:
CREATE TABLE `ledger` (
`objectOwnerId` CHAR(10) NOT NULL,
`objectId` VARCHAR(50) NOT NULL,
`objectHash` BINARY(16) NOT NULL,
`timestamp` TIMESTAMP(6) NOT NULL DEFAULT CURRENT_TIMESTAMP(6),
`timestampAdditionalEntropy` BINARY(3) NOT NULL,
PRIMARY KEY (`timestamp`, `timestampAdditionalEntropy`),
UNIQUE(`objectHash`),
INDEX(`objectId`(10))
);
Let's insert some values:
INSERT INTO ledger (objectOwnerId, objectId, objectHash, timestampAdditionalEntropy) VALUES ('owneraaaaa', 'ida', unhex(substring(sha1(random_bytes(16)), 1, 32)), random_bytes(3));
INSERT INTO ledger (objectOwnerId, objectId, objectHash, timestampAdditionalEntropy) VALUES ('owneraaaaa', 'ida', unhex(substring(sha1(random_bytes(16)), 1, 32)), random_bytes(3));
INSERT INTO ledger (objectOwnerId, objectId, objectHash, timestampAdditionalEntropy) VALUES ('owneraaaab', 'idb', unhex(substring(sha1(random_bytes(16)), 1, 32)), random_bytes(3));
INSERT INTO ledger (objectOwnerId, objectId, objectHash, timestampAdditionalEntropy) VALUES ('owneraaaab', 'idb', unhex(substring(sha1(random_bytes(16)), 1, 32)), random_bytes(3));
INSERT INTO ledger (objectOwnerId, objectId, objectHash, timestampAdditionalEntropy) VALUES ('owneraaaab', 'idb', unhex(substring(sha1(random_bytes(16)), 1, 32)), random_bytes(3));
We've got this dataset:
# objectOwnerId, objectId, objectHash, timestamp, HEX(CAST(timestampAdditionalEntropy AS CHAR(6) CHARACTER SET utf8))
#'owneraaaab', 'idb', 'A8D3B63EFC6C63FD996B8D1931FBF748', '2019-05-29 11:38:12.353521', '725E3D'
#'owneraaaab', 'idb', '9B7395F9EE2F2363BA89C7FBAEDDBB54', '2019-05-29 11:38:12.352524', '8B8162'
#'owneraaaab', 'idb', '80393C5FF4492342D073B5F8B3388EC2', '2019-05-29 11:38:12.351569', 'FEAA02'
#'owneraaaaa', 'ida', '0D84F725ACAC87838C34742CA00BBEF7', '2019-05-29 11:38:12.350648', '41E425'
#'owneraaaaa', 'ida', '9A82C936A25C4648BFB75B692850841B', '2019-05-29 11:38:12.349625', '470685'
returned by this query:
select objectOwnerId, objectId, HEX(CAST(objectHash AS CHAR(32) CHARACTER SET utf8)) as objectHash, timestamp, HEX(CAST(timestampAdditionalEntropy AS CHAR(6) CHARACTER SET utf8))
from ledger
order by timestamp desc, timestampAdditionalEntropy desc;
I need to get this:
# objectOwnerId, objectId, objectHash, timestamp, HEX(CAST(s.timestampAdditionalEntropy AS CHAR(6) CHARACTER SET utf8))
#owneraaaaa, ida, 0D84F725ACAC87838C34742CA00BBEF7, 2019-05-29 11:38:12.350648, 41E425
#owneraaaab, idb, A8D3B63EFC6C63FD996B8D1931FBF748, 2019-05-29 11:38:12.353521, 725E3D
which this query can return:
select s.objectOwnerId, s.objectId, HEX(CAST(objectHash AS CHAR(32) CHARACTER SET utf8)) as objectHash, s.timestamp, HEX(CAST(s.timestampAdditionalEntropy AS CHAR(6) CHARACTER SET utf8)) from (
select s.objectOwnerId, s.objectId, s.timestamp, max(i.timestampAdditionalEntropy) as timestampAdditionalEntropy from (
select objectOwnerId, objectId, max(timestamp) as timestamp
from ledger where ((objectOwnerId = 'owneraaaaa' AND objectId = 'ida') OR (objectOwnerId = 'owneraaaab' AND objectId = 'idb'))
group by objectOwnerId, objectId
) s
JOIN ledger i on i.objectOwnerId = s.objectOwnerId and i.objectId = s.objectId and i.timestamp = s.timestamp
group by objectOwnerId, objectId, timestamp
) s
JOIN ledger i on i.objectOwnerId = s.objectOwnerId and i.objectId = s.objectId and i.timestamp = s.timestamp and i.timestampAdditionalEntropy = s.timestampAdditionalEntropy
How can I express the below statement as a SQL query ?
IF EXISTS (SELECT * FROM expense_history
WHERE user_id = 40
AND DATE_FORMAT(expense_history.created_date , '%Y-%m-%d') = '2018-06-02'
AND camp_id='80')
UPDATE expense_history
SET clicks = clicks + 1,
amount = amount + 1
WHERE user_id = 40
AND DATE_FORMAT(expense_history.created_date, '%Y-%m-%d') = '2018-06-02'
AND camp_id = '80'
ELSE
INSERT INTO expense_history (camp_id, created_date, amount, user_id)
VALUES ('80', '2018-06-02 12:12:12', '1', '40')
END IF;
I just want to do increment clicks and amount if is set by day, else I want to add new row.
This is very tricky in MySQL. You are storing a datetime but you want the date part to be unique.
Starting in MySQL 5.7.?, you can use computed columns for the unique constraint. Here is an example:
create table expense_history (
user_id int,
camp_id int,
amount int default 0,
clicks int default 1,
. . .
created_datetime datetime, -- note I changed the name
created_date date generated always as (date(created_datetime)),
unique (user_id, camp_id, created_datetime)
);
You can then do the work as:
INSERT INTO expense_history (camp_id, created_datetime, amount, user_id)
VALUES (80, '2018-06-02 12:12:12', 1, 40)
ON DUPLICATE KEY UPDATE
amount = COALESCE(amount + 1, 1),
clicks = COALESCE(clicks + 1, 1);
Earlier versions of MySQL don't support generated columns. Nor do they support functions on unique. But you can use a trick on a prefix index on a varchar to do what you want:
create table expense_history (
user_id int,
camp_id int,
amount int default 0,
clicks int default 1,
. . .
created_datetime varchar(19),
unique (created_datetime(10))
);
This has the same effect.
Another alternative is to store the date and the time in separate columns.
I presumed your database is mysql, because of DATE_FORMAT() function(and edited your question as to be).
So, by using such a mechanism below, you can do what you want,
provided that a COMPOSITE PRIMARY KEY for camp_id, amount, user_id columns :
SET #camp_id = 80,
#amount = 1,
#user_id = 40,
#created_date = sysdate();
INSERT INTO expense_history(camp_id,created_date,amount,user_id,clicks)
VALUES(#camp_id,#created_date,#amount,#user_id,ifnull(clicks,1))
ON DUPLICATE KEY UPDATE
amount = #amount + 1,
clicks = ifnull(clicks,0)+1;
SQL Fiddle Demo
I have working SP on Firebird and can'not find the way to translate code to MS SQL server SP
here is the code:
I have one table to get data from.
One fields called "iznos" for data summary and one field for recognite diference for summary by category
create or alter procedure SOME_PROCEDURE (
B_Date date,
E_Date date)
returns(
Dat date,
Value1 decimal(18,2),
Value2 decimal(18,2),
Value3 (18,2))
AS
BEGIN
FOR
SELECT gk.date
FROM gk
WHERE
gk.date BETWEEN :B_Date AND :E_Date
GROUP BY 1
INTO :Dat
DO
BEGIN
/* Value 1 */
SELECT sum(iznos) from gk where gk.category=1 and gk.datum=:Dat
INTO :Value1;
/* Value 2 */
SELECT sum(iznos) from gk where gk.category=2 and gk.datum=:Dat
INTO :Value2;
/* Value 3 */
SELECT sum(iznos) from gk where gk.category=3 and gk.datum=:Dat
INTO :Value3;
suspend;
end
end
You can solve this using PIVOT:
select datum, [1] as Value1, [2] as Value2, [3] as Value3
from (
select datum, category, iznos
from gk
where datum between #B_Date AND #E_Date
) as src
pivot (
sum(src.iznos)
for src.category in ([1], [2], [3])
) as pvt
This doesn't have the exact same effect as the Firebird stored procedure though, because that is returning a row for each row in gk. If you want to have the exact same result, you may have to join gk to the above query.
If you intend to use this stored procedure in a select (which is possible in Firebird, but not in SQL Server), then you need to convert it to a table-valued user-defined function.
You could also create a view instead. In that case the where clause would need to be removed.
Small example in TSQL:
create table #example (
datum date,
category int,
val int
);
insert into #example(datum, category, val) values
('2015-07-24', 1, 1),
('2015-07-24', 2, 1),
('2015-07-24', 3, 1),
('2015-07-24', 1, 1),
('2015-07-24', 2, 1),
('2015-07-25', 3, 1);
select datum, [1] as Value1, [2] as Value2, [3] as Value3
from (
select datum, category, val
from #example
) as src
pivot (
sum(src.val)
for src.category in ([1], [2], [3])
) as pvt;
drop table #example;
Very new to SQL 2 weeks in. I have date in table have added extra columns in table, copied date field to each column. Alter the dates for 6 &18 weeks from original date. I need to convert the date to uk short date & copy result to table preferably replacing existing data in the columns.
COLUMNS are REF_DATE this is original date
Six_wk
Eighteen_wk
this is the SQL so far
ALTER TABLE [Frontsheets].[dbo].[j38_spfit_op_activity_noc]
ADD
APPOINTMENT_DATE nvarchar(11),
APPOINTMENT_TIME datetime,
Six_wk datetime,
Eighteen_wk datetime
go
update [Frontsheets].[dbo].[j38_spfit_op_activity_noc] set APPOINTMENT_DATE = APPT_DTTM, Six_wk = REF_DATE, Eighteen_wk = REF_DATE, APPOINTMENT_TIME = APPT_DTTM
go
UPDATE [Frontsheets].[dbo].[j38_spfit_op_activity_noc] SET Six_wk = DATEADD( "d" , 42, REF_DATE ), Eighteen_wk = DATEADD( "d" , 126, REF_DATE )
Go
Select REF_DATE = convert(nvarchar(10),REF_DATE, 103),
Six_wk = CONVERT(varchar(10), Six_wk, 103),
Eigheen_wk = CONVERT(varchar(10), Eighteen_wk, 103)
from [Frontsheets].[dbo].[j38_spfit_op_activity_noc]
Now I cant seem to save the converted data to my table?
HI i have two tables in my database named...Requests and Balance tracker which has no relation....but i want to select data from two tables and binf it two grid...
Requests
EmpID |EmpRqsts|EmpDescription|ApproverID|ApprovedAmount|RequestPriority
1 |asdfsb |sadbfsbdf |1 |
2 |asbfd |sjkfbsd |1 |
Balance Tracker
EmpId|BalanceAmnt|LastUpdated|lastApprovedAmount
| 1 |5000 |sdfbk |
| 2 |3000 |sjbfsh |
now i want to update based on the EmpID two tables at a time...when ever amount is approved it should be updates in request table column [ApprovedAmount] and with priority...
when [ApprovedAmount] is Updated [BalanceAmnt] Balance Tracker of also should be Updated by adding the amount approved,[LastUpdated],[lastApprovedAmount] should be updated with date and time
can any one help me with the query please....
#Anil, here is an example of SQL Server 2008 code which would help you to get your goal acomplished:
DECLARE #Requests TABLE
(
EmpId int
, EmpRqsts nvarchar(50)
, EmpDescription nvarchar(250)
, ApproverID int
, ApprovedAmount money
, RequestPriority int
)
DECLARE #BalanceTracker TABLE
(
EmpId int
, BalanceAmnt money
, LastUpdated datetime
, lastApprovedAmount money
)
-- Insert data for testing
INSERT INTO #Requests VALUES
(
1
, 'Something here'
, 'Some descriptio here'
, 1
, 100
, 1
)
INSERT INTO #Requests VALUES
(
2
, 'Something here 2 '
, 'Some descriptio here 3'
, 1
, 215
, 2
)
INSERT INTO #BalanceTracker VALUES
(
1
, 5000
, GETDATE() - 3
, 310
)
INSERT INTO #BalanceTracker VALUES
(
2
, 3000
, (GETDATE() - 1)
, 98
)
-- Declare local variables
DECLARE
#NewAmount money
, #NewPriority int
, #SelectedEmpId int
-- Assing values for example
SELECT #NewAmount = 1000
, #SelectedEmpId = 1
, #NewPriority = 5
-- Get the tables values pre - updates
SELECT *
FROM #Requests
SELECT *
FROM #BalanceTracker
BEGIN TRY
-- Update the record with new ApprovedAmount and Request Priority
UPDATE #Requests
SET ApprovedAmount = #NewAmount
, RequestPriority = #NewPriority
WHERE EmpId = #SelectedEmpId
-- If no error found then update BalanceAmnt trable
IF (##ERROR = 0)
BEGIN TRY
UPDATE #BalanceTracker
SET BalanceAmnt = (BalanceAmnt + #NewAmount)
, LastUpdated = GETDATE()
, lastApprovedAmount = #NewAmount
WHERE EmpId = #SelectedEmpId
END TRY
BEGIN CATCH
PRINT N'Error found updating #BalanceTracker table: ' + ISNULL(LTRIM(STR(ERROR_NUMBER())) , N'Unknown Error' )
+ N', Message: ' + ISNULL ( ERROR_MESSAGE() , N'No Message' )
END CATCH
END TRY
BEGIN CATCH
PRINT N'Error found updating #Requests table: ' + ISNULL(LTRIM(STR(ERROR_NUMBER())) , N'Unknown Error' )
+ N', Message: ' + ISNULL ( ERROR_MESSAGE() , N'No Message' )
END CATCH
-- Get the tables values post - updates
SELECT *
FROM #Requests
SELECT *
FROM #BalanceTracker
Note 1: #Table are Variable Tables handlded by SQL Server 2008. If you're using previous version you should be able to create Temporary Table (#Table).
Note 2: data data-types may vary depending upon the SQL version you're using.
You could do this type of thing with a trigger. This way whenever you do the first update, it will automatically do the other update you specify.