I would like to write a sql to get top 5 table space storage metric. Below query gives the metric about all tbspaces. Appreciate if someone fine tune this to have only top N
SELECT
ts.tablespace_name AS TBNAME,
round((ts.tablespace_size/1024/1024),2) AS SIZE_MB,
round((ts.tablespace_used_size/1024/1024),2) AS USED_MB,
round(((ts.tablespace_size - ts.tablespace_used_size)/1024/1024),2) AS FREE_MB
FROM
mgmt$db_tablespaces ts,
(SELECT d.target_guid, d.tablespace_name, count(d.file_name) df_count,
sum(decode(d.autoextensible, 'YES', 1, 0)) auto_extend
FROM mgmt$db_datafiles d, mgmt$target t
WHERE t.target_guid = '<id>' AND
(t.target_type='rac_database' OR
(t.target_type='oracle_database' AND t.TYPE_QUALIFIER3 != 'RACINST')) AND
t.target_guid = d.target_guid
GROUP BY d.target_guid, d.tablespace_name) df
WHERE
ts.target_guid = df.target_guid AND
df.tablespace_name = ts.tablespace_name
ORDER BY ts.tablespace_size;`
Thanks
You can use the ROWNUM. Oracle applies rownum to the result after it has been returned.
You need to filter the result after it has been returned, so a subquery is required. You can also use RANK() function to get Top-N results.
SELECT
*
FROM
(
SELECT
ts.tablespace_name AS TBNAME,
round((ts.tablespace_size/1024/1024),2) AS SIZE_MB,
round((ts.tablespace_used_size/1024/1024),2) AS USED_MB,
round(((ts.tablespace_size - ts.tablespace_used_size)/1024/1024),2) AS FREE_MB
FROM
mgmt$db_tablespaces ts,
(SELECT d.target_guid, d.tablespace_name, count(d.file_name) df_count,
sum(decode(d.autoextensible, 'YES', 1, 0)) auto_extend
FROM mgmt$db_datafiles d, mgmt$target t
WHERE t.target_guid = '<id>' AND
(t.target_type='rac_database' OR
(t.target_type='oracle_database' AND t.TYPE_QUALIFIER3 != 'RACINST')) AND
t.target_guid = d.target_guid
GROUP BY d.target_guid, d.tablespace_name) df
WHERE
ts.target_guid = df.target_guid AND
df.tablespace_name = ts.tablespace_name
ORDER BY ts.tablespace_size
)
WHERE ROWNUM <= 5;
Related
Problem
So the situation that I am facing here with this SQL Query, is that it is taking about 12 seconds to run making the screen super slow.
Goal
Do the necessary changes in order to improve the performance and make it faster. I was thinking about instead of the OR in the Where clause to use the UNION?
SELECT Tool.*, Interview.*
FROM Tool
INNER JOIN Interview ON Interview.Id = Tool.InterviewId
WHERE (Tool.ToolTypeId = #ToolTypeId
AND Tool.Is_Active = 1
AND Tool.InterviewId = #InterviewId
AND Tool.ToolId = #ToolId
AND Tool.CustomerId = #CustomerId)
OR Tool.Id = (
SELECT TOP 1 SubTool.Id
FROM Tool SubTool
INNER JOIN Interview subInterview ON subInterview.Id = SubTool.ToolId
WHERE SubTool.ToolTypeId = #ToolTypeId
AND SubTool.Is_Active = 1
AND SubTool.InterviewId != #InterviewId
AND SubTool.ToolId = #ToolId
AND subTool.CustomerId = #CustomerId
AND convert(datetime, subTool.DateTime, 120) < #ToolDateTime
ORDER BY subTool.DateTime DESC, subTool.StartDate DESC,
subTool.EndDate, subTool.Id DESC
)
ORDER BY Tool.StartDate, Tool.Id
NOTE: I believe the actual query output is not necessary in this case, since we are looking for some structural issues that might be impacting the performance.
I would suggest rephrasing the query to eliminate the subquery in the WHERE clause.
If you are looking for one row in the result set regardless of conditions, you can use:
SELECT TOP (1) Tool.*, Interview.*
FROM Tool JOIN
Interview
ON Interview.Id = Tool.InterviewId
WHERE Tool.ToolTypeId = #ToolTypeId AND
Tool.Is_Active = 1
Tool.ToolId = #ToolId AND
Tool.CustomerId = #CustomerId AND
(Tool.InterviewId = #InterviewId OR
convert(datetime, Tool.DateTime, 120) < #ToolDateTime
)
ORDER BY (CASE WHEN Tool.InterviewId = #InterviewId THEN 1 ELSE 2 END),
Tool.DateTime DESC, sTool.StartDate DESC, Tool.EndDate, Tool.Id DESC;
Your final ORDER BY suggests that you are expecting more than one row for the first condition. So, you can use a subquery and window functions:
SELECT ti.*
FROM (SELECT Tool.*, Interview.*,
COUNT(*) OVER (PARTITION BY (CASE WHEN Tool.InterviewId = #InterviewId THEN 1 ELSE 0 END)) as cnt_interview_match,
ROW_NUMBER() OVER (ORDER BY subTool.DateTime DESC, subTool.StartDate DESC, subTool.EndDate, subTool.Id DESC) as seqnum
FROM Tool JOIN
Interview
ON Interview.Id = Tool.InterviewId
WHERE Tool.ToolTypeId = #ToolTypeId AND
Tool.Is_Active = 1
Tool.ToolId = #ToolId AND
Tool.CustomerId = #CustomerId AND
(Tool.InterviewId = #InterviewId OR
convert(datetime, Tool.DateTime, 120) < #ToolDateTime
)
) ti
WHERE InterviewId = #InterviewId OR
(cnt_interview_match = 0 AND seqnum = 1);
Note that the subquery requires that the columns have different names, so you might need to fiddle with that.
Then, you want an index on TOOL(ToolTypeId, Is_Active, ToolId, CustomerId, InterviewId, DateTime). I assume that Interview(Id) is already indexed as the primary key of the table.
My interpretation of what your query does (and by inference, what you want it to do) is different from #GordonLinoff's.
Gordon's queries could be paraphrased as...
If there are rows with Tool.InterviewId = #InterviewId...
Return those rows and only those rows
If there are no such rows to return...
Return the latest row for other InterviewId's
My understanding of what your query actually does is that you want both possibilities returned together, at all times.
This ambiguity is an example of why you really should include example data.
For example, this would be a re-wording or your existing query (using UNION as per your own suggestion)...
WITH
filter_tool_customer AS
(
SELECT Tool.*, Interview.*
FROM Tool
INNER JOIN Interview ON Interview.Id = Tool.InterviewId
WHERE Tool.ToolTypeId = #ToolTypeId
AND Tool.Is_Active = 1
AND Tool.ToolId = #ToolId
AND Tool.CustomerId = #CustomerId
),
matched AS
(
SELECT *
FROM filter_tool_customer
WHERE InterviewId = #InterviewId
),
mismatched AS
(
SELECT TOP 1 *
FROM filter_tool_customer
WHERE InterviewId <> #InterviewId
AND DateTime < CONVERT(VARCHAR(20), #ToolDateTime, 120)
ORDER BY DateTime DESC,
StartDate DESC,
EndDate,
Id DESC
),
combined AS
(
SELECT * FROM matched
UNION ALL
SELECT * FROM mismatched
)
SELECT * FROM combined ORDER BY StartDate, Id
I have ORA-00918 error with my code and i could not find the problem... the following code gives me this error.
ORA-00918 : column ambiguously defined
can anyone give me some advice? thanks
SELECT * FROM (
SELECT * FROM (
SELECT ROWNUM AS RNUM, A.XML_MSG_ID, A.LOGIN_ID, A.ORIGINATOR, A.RECIPIENT, A.ERROR_CODE, B.DOC_NO, B.DOC_NAME, B.ERROR_MSG
FROM XML_MANAGE_TBL A, XML_REFERENCE_TBL B
WHERE A.XML_MGS_ID = B.XML_MSG_ID
AND A.ERROR_CODE <> '00000000'
AND A.XML_MSG_ID >= '20190528' AND (SUBSTR(A.XML_MSG_ID, 1, 8)) <= '20190604' ) C, EBILL_USER D WHERE D.COMP_NUM = '1258169573' AND C.ORIGINATOR = D.ORIGINATOR )
WHERE RNUM BETWEEN CASE WHEN (1-1) != 0 THEN ((1-1)*50)+1 ELSE (1-1)*50 END
AND 1*50;
The problem is most probably in second subquery select *
SELECT * FROM (
... subquery C ...
) C, EBILL_USER D WHERE ... AND C.ORIGINATOR = D.ORIGINATOR
The table D contains the same columns as the subquery C, for sure the ORIGINATORcolumn
Simple change the second query to SELECT C.* and add only the required columns from D.
The general aproach how to troubleshoot ORA-00918 is to run the query from the innermost subquery and check that the returned column names are unique.
In your case try first, which should be fine
SELECT ROWNUM AS RNUM, A.XML_MSG_ID, A.LOGIN_ID, A.ORIGINATOR, A.RECIPIENT, A.ERROR_CODE, B.DOC_NO, B.DOC_NAME, B.ERROR_MSG
FROM XML_MANAGE_TBL A, XML_REFERENCE_TBL B
WHERE A.XML_MGS_ID = B.XML_MSG_ID
AND A.ERROR_CODE <> '00000000'
AND A.XML_MSG_ID >= '20190528' AND (SUBSTR(A.XML_MSG_ID, 1, 8)) <= '20190604'
Than run the second innermost subquery
SELECT * FROM (
SELECT ROWNUM AS RNUM, A.XML_MSG_ID, A.LOGIN_ID, A.ORIGINATOR, A.RECIPIENT, A.ERROR_CODE, B.DOC_NO, B.DOC_NAME, B.ERROR_MSG
FROM XML_MANAGE_TBL A, XML_REFERENCE_TBL B
WHERE A.XML_MGS_ID = B.XML_MSG_ID
AND A.ERROR_CODE <> '00000000'
AND A.XML_MSG_ID >= '20190528' AND (SUBSTR(A.XML_MSG_ID, 1, 8)) <= '20190604' ) C, EBILL_USER D WHERE D.COMP_NUM = '1258169573' AND C.ORIGINATOR = D.ORIGINATOR
In your IDE (e.g. SQL Developer) you will see one and more columns with a suffix _1 which is a sign of duplicated column that must be excluded (for columns from the equijoin predicate) or renamed.
you just need to remove outermost query and use C.RNUM instead of RNUM in where clause. Try with below code:
SELECT * FROM (
SELECT ROWNUM AS RNUM, A.XML_MSG_ID, A.LOGIN_ID, A.ORIGINATOR, A.RECIPIENT, A.ERROR_CODE, B.DOC_NO, B.DOC_NAME, B.ERROR_MSG
FROM XML_MANAGE_TBL A, XML_REFERENCE_TBL B
WHERE A.XML_MGS_ID = B.XML_MSG_ID
AND A.ERROR_CODE <> '00000000'
AND A.XML_MSG_ID >= '20190528' AND (SUBSTR(A.XML_MSG_ID, 1, 8)) <= '20190604' ) C, EBILL_USER D WHERE D.COMP_NUM = '1258169573' AND C.ORIGINATOR = D.ORIGINATOR
and (C.RNUM BETWEEN CASE WHEN (1-1) != 0 THEN ((1-1)*50)+1 ELSE (1-1)*50 END AND 1*50);
I am new to SQL so bear with me. I am returning data from multiple tables. Followed is my SQL (let me know if there is a better approach):
SELECT [NonScrumStory].[IncidentNumber], [NonScrumStory].[Description], [DailyTaskHours].[ActivityDate], [Application].[AppName], [SupportCatagory].[Catagory], [DailyTaskHours].[PK_DailyTaskHours],n [NonScrumStory].[PK_NonScrumStory]
FROM [NonScrumStory], [DailyTaskHours], [Application], [SupportCatagory]
WHERE ([NonScrumStory].[UserId] = 26)
AND ([NonScrumStory].[PK_NonScrumStory] = [DailyTaskHours].[NonScrumStoryId])
AND ([NonScrumStory].[CatagoryId] = [SupportCatagory].[PK_SupportCatagory])
AND ([NonScrumStory].[ApplicationId] = [Application].[PK_Application])
AND ([NonScrumStory].[Deleted] != 1)
AND [DailyTaskHours].[ActivityDate] >= '1/1/1990'
ORDER BY [DailyTaskHours].[ActivityDate] DESC
This is what is being returned:
This is nearly correct. I only want it to return one copy of PK_NonScrumStory though and I can't figure out how. Essentially, I only want it to return one copy so one of the top two rows would not be returned.
You could group by the NonScrumStore columns, and then aggregate the other columns like this:
SELECT [NonScrumStory].[IncidentNumber],
[NonScrumStory].[Description],
MAX( [DailyTaskHours].[ActivityDate]),
MAX( [Application].[AppName]),
MAX([SupportCatagory].[Catagory]),
MAX([DailyTaskHours].[PK_DailyTaskHours]),
[NonScrumStory].[PK_NonScrumStory]
FROM [NonScrumStory],
[DailyTaskHours],
[Application],
[SupportCatagory]
WHERE ([NonScrumStory].[UserId] = 26)
AND ([NonScrumStory].[PK_NonScrumStory] = [DailyTaskHours].[NonScrumStoryId])
AND ([NonScrumStory].[CatagoryId] = [SupportCatagory].[PK_SupportCatagory])
AND ([NonScrumStory].[ApplicationId] = [Application].[PK_Application])
AND ([NonScrumStory].[Deleted] != 1)
AND [DailyTaskHours].[ActivityDate] >= '1/1/1990'
group by [NonScrumStory].[IncidentNumber], [NonScrumStory].[Description],[NonScrumStory].[PK_NonScrumStory]
ORDER BY 3 DESC
From the screenshot it seems DISTINCT should have solved your issue but if not you could use the ROW_NUMBER function.
;WITH CTE AS
(
SELECT ROW_NUMBER() OVER (PARTITION BY [NonScrumStory].[PK_NonScrumStory] ORDER BY [DailyTaskHours].[ActivityDate] DESC) AS RowNum,
[NonScrumStory].[IncidentNumber], [NonScrumStory].[Description], [DailyTaskHours].[ActivityDate], [Application].[AppName], [SupportCatagory].[Catagory], [DailyTaskHours].[PK_DailyTaskHours],n [NonScrumStory].[PK_NonScrumStory]
FROM [NonScrumStory], [DailyTaskHours], [Application], [SupportCatagory]
WHERE ([NonScrumStory].[UserId] = 26)
AND ([NonScrumStory].[PK_NonScrumStory] = [DailyTaskHours].[NonScrumStoryId])
AND ([NonScrumStory].[CatagoryId] = [SupportCatagory].[PK_SupportCatagory])
AND ([NonScrumStory].[ApplicationId] = [Application].[PK_Application])
AND ([NonScrumStory].[Deleted] != 1)
AND [DailyTaskHours].[ActivityDate] >= '1/1/1990'
)
SELECT * FROM CTE WHERE RowNum = 1 ORDER BY [ActivityDate] DESC
I believe if you add DISTINCT to your query that should solve your problem. Like so
SELECT DISTINCT [NonScrumStory].[IncidentNumber], [NonScrumStory].[Description],...
I have got the following join:
SELECT l.cFirma AS Lieferant,
SUM(la.fEKNetto) AS Verbindlichkeiten,
l.kLieferant AS Lieferanten_ID,
100 - gk1.fFaktor * 100 AS Grundkondition,
MAX(gk1.dDatum) AS Datum
FROM tBestellung b, tArtikel a, tBestellpos p, tLieferant l, tLiefArtikel la, tGrundkondition gk1
WHERE
CAST('01.01.2010' AS DATETIME) <= CAST(b.dErstellt AS DATETIME)
AND b.cType = 'B'
AND p.tBestellung_kBestellung = b.kBestellung
AND a.kArtikel = p.tArtikel_kArtikel
AND l.kLieferant = la.tLieferant_KLieferant
AND a.kArtikel = la.tArtikel_kArtikel
AND gk1.tLieferant_kLieferant = l.kLieferant
GROUP BY l.kLieferant, cFirma, gk1.fFaktor
ORDER BY Verbindlichkeiten DESC, Lieferant
Please fokus on the table "tGrundkondition" alias gk1. There is a DATETIME column called "dDatum" and a foreign key "tLieferant_kLieferant".
Now I need only the latest data from this table, joined with the other stuff. I already used the MAX(gk1.dDatum) function, but I still get all entries of gk1. I need only the latest (with the highest dDate). Actually I don't need to output the date but only to filter the data.
I'm running this statement on Microsoft SQL Server via ODBC. Do you need any further information?
I hope you can help me. Thanks in advance.
You need to use a correlated subquery, for example add the following:
WHERE gk1.DATUM = (SELECT MAX(SUB.DATUM) FROM tGrundkondition SUB
WHERE SUB.tLieferant_kLieferant = l.kLieferant)
I am not sure this is 100% correct because I don't know your table structure, but it should give you an idea.
Try to do something like this:
SELECT l.cFirma AS Lieferant,
SUM(la.fEKNetto) AS Verbindlichkeiten,
l.kLieferant AS Lieferanten_ID,
100 - gk1.fFaktor * 100 AS Grundkondition,
gk1.dDatum AS Datum
FROM tBestellung b, tArtikel a, tBestellpos p, tLieferant l, tLiefArtikel la, tGrundkondition gk1
WHERE
CAST('01.01.2010' AS DATETIME) <= CAST(b.dErstellt AS DATETIME)
AND b.cType = 'B'
AND p.tBestellung_kBestellung = b.kBestellung
AND a.kArtikel = p.tArtikel_kArtikel
AND l.kLieferant = la.tLieferant_KLieferant
AND a.kArtikel = la.tArtikel_kArtikel
AND gk1.tLieferant_kLieferant = l.kLieferant
AND gk1.dDatum = (SELECT MAX(dDatum) from _ITS TABLE_)
GROUP BY l.kLieferant, cFirma, gk1.fFaktor
ORDER BY Verbindlichkeiten DESC, Lieferant
I don't know if it works on SQL SERVER.... but I used a lot on DB2
SELECT l.cFirma AS Lieferant,
SUM(la.fEKNetto) AS Verbindlichkeiten,
l.kLieferant AS Lieferanten_ID,
100 - gk1.fFaktor * 100 AS Grundkondition,
gk1.dDatum AS Datum
FROM (
SELECT TOP 1 *
FROM tGrundkondition
ORDER BY
dDatum DESC
) gk1,
tBestellung b, tArtikel a, tBestellpos p, tLieferant l, tLiefArtikel la
WHERE
CAST('01.01.2010' AS DATETIME) <= CAST(b.dErstellt AS DATETIME)
AND b.cType = 'B'
AND p.tBestellung_kBestellung = b.kBestellung
AND a.kArtikel = p.tArtikel_kArtikel
AND l.kLieferant = la.tLieferant_KLieferant
AND a.kArtikel = la.tArtikel_kArtikel
AND gk1.tLieferant_kLieferant = l.kLieferant
GROUP BY l.kLieferant, cFirma, gk1.fFaktor
ORDER BY Verbindlichkeiten DESC, Lieferant
I read this article, and i have the code in oracle, but I want to convert it to work on MySQL. In Oracle, i use the function rank, with four columns can eligible or not, how i can use this in mysql, or, it is not possible?
This is the code, I want select the most eligible line, every line can have 4 columns completed, I want to rank one of which has more data.
SELECT vlr,
data
INTO vn_vlr,
vd_data
FROM (SELECT a.*, rank() over (ORDER BY nvl(a.id_categoria, -1) DESC,
nvl(a.id_peso, -1) DESC,
nvl(a.id_faixa, -1) DESC,
nvl(a.sexo, ' ') DESC ) rank
FROM tab_regra_pagamento a
WHERE a.id_competicao = pidcompedticao
AND a.tipo = 'NORMAL'
AND a.data_vencimento > SYSDATE
AND nvl(a.id_categoria, vid_categoria) = vid_categoria
AND nvl(a.id_faixa, vid_faixa) = vid_faixa
AND nvl(a.id_peso, vid_peso) = vid_peso
AND nvl(a.sexo, vsexo) = vsexo)
WHERE rank = 1;
SELECT #rank := #rank + (#value <> value),
#value := value
FROM (
SELECT #rank := 0,
#value := -1
) vars,
mytable
ORDER BY
value
In you case, when you just need all copies of the first set of values:
SELECT vlr, data
FROM tab_regra_pagamento a
WHERE a.id_competicao = pidcompedticao
AND a.tipo = 'NORMAL'
AND a.data_vencimento > SYSDATE
AND (a.id_cetegoria, a.id_faixa, a.id_peso, a.sexo) =
(
SELECT ai.id_cetegoria, ai.id_faixa, ai.id_peso, ai.sexo
FROM tab_regra_pagamento ai
WHERE ai.id_competicao = pidcompedticao
AND ai.tipo = 'NORMAL'
AND ai.data_vencimento > SYSDATE
ORDER BY
a.id_cetegoria DESC, a.id_faixa DESC, a.id_peso DESC, a.sexo DESC
LIMIT 1
)