I have the following two queries that produce the results I need. Now the final output I truly need I would usually use python for after the results are returned, but unfortunately only SQL can be used.
Query A:
SELECT *
FROM openquery(PROD, 'SELECT `status`, computer_name, device_type
FROM assets
WHERE (device_type="SERVER")
AND (status="ACTIVE")')
Query B:
SELECT *
FROM openquery(AppMap, 'SELECT `t1`.`uaid` AS `uaid`, `t3`.`computer_name`,
FROM ((`applications` `t1`
JOIN `app_infrastructure` `t2` ON (((`t1`.`uaid` = `t2`.`uaid`))))
JOIN `infrastructure` `t3` ON ((`t2`.`infrastructure_id` = `t3`.`infrastructure_id`)));')
How I would want to process the results:
if a computer_name is in both A and B:
final_row = ['computer_name', 1]
elseif a computer_name is in A but not B:
final_row = ['computer_name', 0]
elseif a computer_name is in B but not A:
final_row = ['computer_name', 2]
So my final query results need to look like those rows, does that make sense?
In a stored procedure, use both queries to load table variables.
Then do a FULL OUTER JOIN query, joining the two table variables on computer_name, and use a CASE expression to get your final_row value for each computer name.
Related
I've been attempting to write a peewee select query which results in a table with 2 counts (one for the number of prizes associated with the lottery, and the for the number of packages associated with the lottery), as well as the fields in the Lottery model.
I've managed to write select queries with 1 count working (seen below), and then I've had to convert the ModelSelects to lists and join them manually (which I think is very hacky).
I did manage to write a select query where the results were joined, but it would multiply the packages count with the prizes count (I've since lost that query).
I also tried using a .switch(Lottery) but I didn't have any luck with this.
query1 = (Lottery.select(Lottery,fn.count(Package.id).alias('packages'))
.join(LotteryPackage)
.join(Package)
.order_by(Lottery.id)
.group_by(Lottery)
.dicts())
query2 = (Lottery.select(Lottery.id.alias('lotteryID'), fn.count(Prize.id).alias('prizes'))
.join(LotteryPrize)
.join(Prize)
.group_by(Lottery)
.order_by(Lottery.id)
.dicts())
lottery = list(query1)
query3 = list(query2)
for x in range(len(lottery)):
lottery[x]['prizes'] = query3[x]['prizes']
While the above code works, is there a cleaner way to write this query?
Your best bet is to do this with subqueries.
# Create query which gets lottery id and count of packages.
L1 = Lottery.alias()
subq1 = (L1
.select(L1.id, fn.COUNT(LotteryPackage.package).alias('packages'))
.join(LotteryPackage, JOIN.LEFT_OUTER)
.group_by(L1.id))
# Create query which gets lottery id and count of prizes.
L2 = Lottery.alias()
subq2 = (L2
.select(L2.id, fn.COUNT(LotteryPrize.prize).alias('prizes'))
.join(LotteryPrize, JOIN.LEFT_OUTER)
.group_by(L2.id))
# Select from lottery, joining on each subquery and returning
# the counts.
query = (Lottery
.select(Lottery, subq1.c.packages, subq2.c.prizes)
.join(subq1, on=(Lottery.id == subq1.c.id))
.join(subq2, on=(Lottery.id == subq2.c.id))
.order_by(Lottery.name))
for row in query.objects():
print(row.name, row.packages, row.prizes)
i have a table like this
DBName p_server_fqdn p_server_alias q_server_fqdn q_server_alias
cube1 server1.com p1server.com server5.com q1server.com
cube1 server2.com p1server.com server6.com q1server.com
cube2 server3.com p2server.com server7.com q2server.com
cube2 server4.com p2server.com server8.com q2server.com
I want to run a case select query in which i get the alias of a server input that matches a server column with corresponding DBName
this is what im trying so far
$SAlias = Invoke-sqlcmd -Query "SELECT DISTINCT CASE
WHEN ($cubeTable.DBName like $CUBE_input) AND ($cubeTable.p_server_fqdn) like $server_input THEN p_server_alias
WHEN ($cubeTable.DBName like $CUBE_input) AND ($cubeTable.q_server_fqdn) like $server_input THEN q_server_alias
ELSE 'unknown'
END as SAlias
FROM table $cubeTable" -ConnectionString "connectionstuff" | Select -ExpandProperty SAlias
but when i try the query itself in SSMS (with hardcoded values like cube1 and server2.com), i get back 2 rows with the row that dont match the DBName as "unknown" while 1 row shows p_server_alias
result im getting:
i should only get back the 1st row: p1server.com in this case, so why am i also getting unknown?
set #cubeInput = 'cube1';
set #serverInput = 'server6.com';
select
case when count(*) = 0 then 'UNKNOWN'
when m.p_server_fqdn = #serverInput then m.p_server_alias
when m.q_server_fqdn = #serverInput then m.q_server_alias
end as alias
from mytable m
where DBName = #cubeInput and (
p_server_fqdn = #serverInput
or q_server_fqdn = #serverInput
);
here is the implementation of my answer : http://sqlfiddle.com/#!9/b967a22/61
#Cataster solution return 2 rows becouse actualy he get 4 rows (3 rows 'unkown' and 1 row 'p1server.com') then he put distinct in the query. it's make result become 2 rows.
my solution little bit tricky :). Using filter in the query. than if we get no row as the result use the count function. So we get 1 row and the value is 0 than show it as 'UNKNOWN'.
I have a table of measurements from weather stations, with station names (in Hebrew):
I also have created a table of those weather stations with their latitudes and longitudes:
I've written a query that should update the first table with the lat/longs from the second, but it's not working:
update t1
set t1.MeasurementLat = t2.Latitude,
t1.MeasurementLong = t2.Longitude
from [dbo].[Measurements] as t1
inner join [dbo].[StationCoords] as t2 on t1.StationName like t2.Station
I think there is a problem with the way the station name is being read, and perhaps something to do with encoding, because this query brings back an empty result, too:
SELECT TOP (5) *
FROM [dbo].[Measurements]
WHERE [StationName] = 'אריאל מכללה';
Any ideas?
Your example names are not the same. Perhaps this will work:
update m
set MeasurementLat = sc.Latitude,
MeasurementLong = sc.Longitude
from dbo.[Measurements] m join
dbo.[StationCoords] sc
on m.StationName like sc.Station + '%';
This is on Windows SQL Server Cluster.
Query is coming from 3rd party application so I can not modify the query permanently.
Query is:
DECLARE #FromBrCode INT = 1001
DECLARE #ToBrCode INT = 1637
DECLARE #Cdate DATE = '31-mar-2017'
SELECT
a.PrdCd, a.Name, SUM(b.Balance4) as Balance
FROM
D009021 a, D010014 b
WHERE
a.PrdCd = LTRIM(RTRIM(SUBSTRING(b.PrdAcctId, 1, 8)))
AND substring(b.PrdAcctId, 9, 24) = '000000000000000000000000'
AND a.LBrCode = b.LBrCode
AND a.LBrCode BETWEEN #FromBrCode AND #ToBrCode
AND b.CblDate = (SELECT MAX(c.CblDate)
FROM D010014 c
WHERE c.PrdAcctId = b.PrdAcctId
AND c.LBrCode = b.LBrCode
AND c.CblDate <= #Cdate)
GROUP BY
a.PrdCd, a.Name
HAVING
SUM(b.Balance4) <> 0
ORDER BY
a.PrdCd
This particular query is taking too much time to complete execution. The same problem happens on a different SQL Server.
No table lock was found, processor and memory usage is normal while the query is running.
Normal "select top 1000" working and showing output instantly in both tables (D009021, D010014)
Reindex and rebuild / update stats done in both tables but problem did not resolve (D009021, D010014)
The same query is working if we reduce number of branch but slowly
(
DECLARE #FromBrCode INT =1001
DECLARE #ToBrCode INT =1001
)
The same query is working faster giving output within 2 mins if we replace any one variable and use the value directly
AND a.LBrCode BETWEEN #FromBrCode AND #ToBrCode
changed to
AND a.LBrCode BETWEEN 1001 AND #ToBrCode
The same query is working faster and giving output within 2 mins if we add "OPTION (RECOMPILE)" at end
I tried to clean cache query execution plan and optimized new one but problem still exists
Found that the query estimate plan and actual execution plan are different (see screenshots)
Table D010014 is aliased twice once as b and once as c
the they are joined to the same table.
Try toto remove the sub query below and create a temp table to store
the values you need. I added * to the fields you self join
SELECT MAX(c.CblDate)
FROM D010014 c
WHERE c.PrdAcctId = b.PrdAcctId
AND c.LBrCode = b.LBrCode
AND c.CblDate <= #Cdate
if you cant do that then try
SELECT TOP 1 c.CblDate
FROM D010014 c
WHERE c.PrdAcctId = b.PrdAcctId
AND c.LBrCode = b.LBrCode
AND c.CblDate <= #Cdate
ORDER BY c.CblDate DESC
This query has been keeping me busy for the last couple of days. I tried to rewrite it with different ideas but I keep having the same problem. To simplify the problem I put part of my query in a view, this view returns 23 records. Using a left join I would like to add fields coming from the table tblDatPositionsCalc to these 23 records. As you can see I have an additional condition on the tblDatPositionsCalc in order to only consider the most recent records. With this condition it would return 21 records. The join should be on two fields together colAccount and colId.
I simply want the query to return the 23 records from the view and where possible have the information from tblDatPositionsCalc. There is actually only 2 records in the view without corresponding id and account in tblDatPositionsCalc, that means out of the 23 records only 2 will have missing values in the fields coming from the table tblDatPositionsCalc.
The problem with my query is that it only returns the 21 records from tblDatPositionsCalc. I don't understand why. I tried to move the condition on date in just after the JOIN condition but that did not help.
SELECT TOP (100) PERCENT
dbo.vwCurrPos.Account,
dbo.vwCurrPos.Id,
dbo.vwCurrPos.TickerBB,
dbo.vwCurrPos.colEquityCode,
dbo.vwCurrPos.colType,
dbo.vwCurrPos.colCcy,
dbo.vwCurrPos.colRegion,
dbo.vwCurrPos.colExchange,
dbo.vwCurrPos.[Instr Type],
dbo.vwCurrPos.colMinLastDay,
dbo.vwCurrPos.colTimeShift,
dbo.vwCurrPos.Strike,
dbo.vwCurrPos.colMultiplier,
dbo.vwCurrPos.colBetaVol,
dbo.vwCurrPos.colBetaEq,
dbo.vwCurrPos.colBetaFloor,
dbo.vwCurrPos.colBetaCurv,
dbo.vwCurrPos.colUndlVol,
dbo.vwCurrPos.colUndlEq,
dbo.vwCurrPos.colUndlFut,
tblDatPositionsCalc_1.colLots,
dbo.vwCurrPos.[Open Positions],
dbo.vwCurrPos.colListMatShift,
dbo.vwCurrPos.colStartTime,
tblDatPositionsCalc_1.colPrice,
tblDatPositionsCalc_1.colMktPrice,
dbo.vwCurrPos.colProduct,
dbo.vwCurrPos.colCalendar,
CAST(dbo.vwCurrPos.colExpiry AS DATETIME) AS colExpiry,
dbo.vwCurrPos.colEndTime,
CAST(tblDatPositionsCalc_1.colDate AS datetime) AS colDate,
dbo.vwCurrPos.colFund,
dbo.vwCurrPos.colExchangeTT,
dbo.vwCurrPos.colUserTag
FROM dbo.vwCurrPos
LEFT OUTER JOIN dbo.tblDatPositionsCalc AS tblDatPositionsCalc_1
ON tblDatPositionsCalc_1.colId = dbo.vwCurrPos.Id
AND tblDatPositionsCalc_1.colAccount = dbo.vwCurrPos.Account
WHERE (tblDatPositionsCalc_1.colDate =
(SELECT MAX(colDate) AS Expr1 FROM dbo.tblDatPositionsCalc))
ORDER BY
dbo.vwCurrPos.Account,
dbo.vwCurrPos.Id,
dbo.vwCurrPos.colEquityCode,
dbo.vwCurrPos.colRegion
Any idea what might cause the problem?
(Option 1) DrCopyPaste is right so your from clause would look like:
...
FROM dbo.vwCurrPos
LEFT OUTER JOIN dbo.tblDatPositionsCalc AS tblDatPositionsCalc_1
ON tblDatPositionsCalc_1.colId = dbo.vwCurrPos.Id
AND tblDatPositionsCalc_1.colAccount = dbo.vwCurrPos.Account
and (tblDatPositionsCalc_1.colDate =
(SELECT MAX(colDate) AS Expr1 FROM dbo.tblDatPositionsCalc))
...
reason: the where clause restriction of left joined to column = some expression with fail to return for "null = something" so the row will be removed.
(Option 2) As oppose to pushing code in to additional views where it is harder to maintain you can nest sql select statements;
select
X.x1,X.x2,
Y.*
from X
left join
(select Z.z1 as y1, Z.z2 as y2, Z.z3 as y3
from Z
where Z.z1 = (select max(Z.z1) from Z)
) as Y
on x.x1 = Y.y1 and X.x2 = Y.y2
The advantage here is you check each nested sub query a move out quickly. Although if you still building up more logic check out common table expressions (CTE's) http://msdn.microsoft.com/en-us/library/ms175972.aspx