Morning,
I'm running the following SELECT statement on a DB2 server (IBM Power System) and it returns the latest record from tableB based on a Timestamp (all good).
SELECT * FROM library1/tableA
JOIN library1/tableB on tableB.PRDCOD = tableA.NPROD
WHERE tableB.PRDCOD = '5520' and tableA.SPRTXT01 <> '0/9'
ORDER BY tableB.timstp DESC FETCH NEXT 1 ROWS ONLY
I now need to change this statement to update tableA and set field SPRTXT01 = '0/9', but only if tableB.SRVRSP= 'SUCCESSFUL' i.e. the latest record from tableB has a response of 'SUCCESSFUL'.
But I don't know how to format this statement correctly. Can anyone assist please?
I've tried the below, but this updated ALL rows in the table
UPDATE library1/tableA
SET tableA.SPRTXT01 = '0/9'
Where exists (
Select '1'
FROM library1/tableA
JOIN library1/tableB on
tableB.PRDCOD = tableA.NPROD
WHERE tableB.PRDCOD = '5520' and tableB.SRVRSP = 'SUCCESSFUL'
and tableA.SPRTXT01 <> '0/1'
ORDER BY tableB.timstp DESC FETCH NEXT 1 ROWS ONLY)
and I don't think it's applying the selection correctly i.e. rather than selecting the latest record from table B and then applying the RVSRP = 'SUCCESSFUL' check, it is only selecting the latest record for table B where SRVSRP = 'SUCCESSFUL'.
Thanks
Try this:
CREATE TABLE tableA (NPROD VARCHAR (10), SPRTXT01 VARCHAR (3));
CREATE TABLE tableB (PRDCOD VARCHAR (10), SRVRSP VARCHAR (20), timstp TIMESTAMP);
INSERT INTO tableA (NPROD, SPRTXT01)
VALUES ('5520', ''), ('XXXX', '');
INSERT INTO tableB (PRDCOD, SRVRSP, timstp)
VALUES
('5520', 'SUCCESSFUL', CURRENT TIMESTAMP)
, ('5520', 'UNSUCCESSFUL', CURRENT TIMESTAMP + 1 SECOND)
-- Comment out the next row to make it NOT update the SPRTXT01 column
, ('5520', 'SUCCESSFUL', CURRENT TIMESTAMP + 2 SECOND)
;
UPDATE tableA
SET tableA.SPRTXT01 = '0/9'
Where tableA.NPROD = '5520' AND tableA.SPRTXT01 <> '0/9'
AND exists
(
SELECT 1
FROM tableB
JOIN (SELECT PRDCOD, MAX (timstp) AS timstp FROM tableB GROUP BY PRDCOD) G
ON (G.PRDCOD, G.timstp) = (tableB.PRDCOD, tableB.timstp)
WHERE tableB.PRDCOD = tableA.NPROD
AND tableB.SRVRSP = 'SUCCESSFUL'
);
SELECT * FROM tableA;
NPROD
SPRTXT01
5520
0/9
XXXX
fiddle
Related
I'm trying to get a number of count for exist and non-exist for my validation to insert my data. As refer to the image below, I'm inserting 3 data in which 1 data consist of same ID number as destination table, 1 data consist of same quotation number as destination table and the last data is a new entry.
Okay here's my requirement. I am sending my source table data to insert into the dest table. So before inserting, I want to do validation by mapping the entire dest table like this:
SELECT COUNT(*) FROM sourceTable WHERE exists(
SELECT * FROM sourceTable WHERE QuotationId IN
(SELECT A.QuotationId FROM sourceTable A
JOIN DestTable B ON A.QuotationId = B.QuotationId
JOIN DestTable C ON A.QuotationNum = C.QuotationNum)
Without further details on table structure and so on it's difficult to tell, but something like the following might do the trick:
WITH cteMatch AS(
SELECT s.QuotationID AS src, d.QuotationID as dst
FROM sourceTable s
LEFT JOIN destTable d
)
SELECT CASE WHEN dst IS NULL THEN N'NonExist' ELSE N'Exist' END AS ValExist, COUNT(*) cnt
FROM cteMatch
GROUP BY CASE WHEN dst IS NULL THEN N'NonExist' ELSE N'Exist' END
You seem to want:
select count(*)
from sourcetable s
where exists(
select 1
from desttable d
where d.quotationid = s.quotationid or d.quotationnum = s.quotationnum
)
This counts how many rows in the source table have a quotation id or num that exists in the target table. If you want the count of both existing and non-existing rows, I would recommend:
select sum(flag) as cnt_exists, sum(1 - flag) as cnt_not_exists
from (
select
case when exists (
select 1
from desttable d
where d.quotationid = s.quotationid or d.quotationnum = s.quotationnum
) then 1 else 0 end as flag
from sourcetable s
) t
Have a scenario to select the value from table where range condition is present in source table.
Like,
TableA
ID value condition
1 20 A-M
2 50 N-Z
Select value from TableA where condition = 'C%'
--want to select TableA value from TableB by passing person name starts with like,
-- Here C is item name starts with
-- Should compare with range (A-M) and return first row.
-- Condition column is varchar(3)
I have seen the solution on other way where range can be compared with input value, but here the range is present in the source table. Please help.
If I have understood what you are after correctly you can use
SELECT TOP 1 B.*
FROM TableB B
WHERE B.Name LIKE (SELECT CONCAT('[',condition,']%') FROM TableA WHERE ID =1)
ORDER BY B.Id
If I understand correctly, you should be structuring TableA as:
ID value Lower Upper
1 20 A M
2 50 N Z
Then you want:
select a.*
from tableA a
where left(#name, 1) between a.lower and a.upper;
You can get this to work with your format, by doing:
select a.*
from tableA a
where left(#name, 1) between left(a.condition) and right(a.condition);
But I don't recommend that. Better to store the condition in two columns.
I would use QUOTENAME() function as
SELECT *
FROM TableA
WHERE #Condition LIKE QUOTENAME(Condition);
This will be as
WHERE 'C' LIKE [A-M] --return True
Demo1
Demo2
Always you should try to add data and DDL for setup correctly the test scenario, here my proposed solution:
DECLARE #SourceA AS TABLE
(
ID INT,
Value INT,
Condition VARCHAR(100)
);
INSERT INTO #SourceA ( ID ,
Value ,
Condition
)
VALUES ( 1 , -- ID - int
110 , -- Value - int
'A-M' -- Condition - varchar(100)
),(2,250,'N-Z')
DECLARE #Alphabet VARCHAR(200)='A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z';
; WITH MyCTE AS
(
SELECT ID,Value,Condition, SUBSTRING(#Alphabet, PATINDEX('%'+ LEFT(Condition,1) + '%' ,#Alphabet),(LEN(#Alphabet)-PATINDEX('%'+ RIGHT(Condition,1) + '%' ,#Alphabet))+1) AS FormattedCondition
FROM #SourceA
)
SELECT * FROM MyCTE
WHERE MyCTE.FormattedCondition LIKE '%C%'
I need to update the current row using the following logic:
if current row is null, then set it as previous row
if current row is not null, then no action
the 1st row is not null, then NULL appears randomly
Those NULLs need to be updated using the logic previously mentioned
e.g.
1. 1
2. null
3. null
4. 2
5. null
6. null
needs to be updated as
1. 1
2. 1
3. 1
4. 2
5. 2
6. 2
How to do it in SQL?
Thanks
r
In case of two Null values in a row, you need to define the least non-null value of the table, so I think Outer Apply will handle your problem:
CREATE TABLE #TB(ID Int Identity(1, 1), Value Int)
INSERT INTO #TB([Value]) VALUES(1),(Null),(Null),(2),(Null),(Null)
UPDATE G SET G.Value = GG.Value
FROM
#TB AS G
OUTER APPLY
(SELECT
TOP 1 *
FROM
#TB AS GG
WHERE
GG.Value IS NOT NULL
AND
GG.ID < G.ID
ORDER BY
GG.ID DESC
) AS GG
WHERE
G.Value IS NULL
SELECT * FROM #TB AS T
but note, that if the first value is Null it will not give you the results, as you have not defined the logic for this scenario.
This might help:
SELECT
t1.col1,
t1.col2 AS previous,
(SELECT
t2.col2
FROM table_1 t2
WHERE t2.col1 = (SELECT
MAX(t3.col1)
FROM table_1 t3
WHERE t3.col1 <= t1.col1
AND col2 IS NOT NULL))
AS new
FROM table_1 t1;
result
Where are you using this SQL code? If you are using Hive SQL for example, there is a function which allows you to directly get last non null value:
LAST_VALUE(col, true) over (PARTITION BY id ORDER BY date)
Oracle 10g has also a function to do this, as adressed in this thread:
Fill null values with last non-null amount - Oracle SQL
Are you familiar with window functions?
while (select count(*) FROM Table_1 where c1_derived = '') > 0
begin
update top(1) Table_1
set c1_derived = (select c1_derived from Table_1 t2 where (t2.id = [Table_1].id-1))
where c1_derived = ''
end
Try the below script. (sql 2008 +)
CREATE TABLE #table(id Int Identity(1, 1), value Int)
INSERT INTO #table([Value]) VALUES(1),(Null),(Null),(2),(Null),(Null)
;WITH cte AS
(
SELECT ID,Value,ROW_NUMBER() OVER(ORDER BY (SELECT 1)) AS row
FROM #table
)
SELECT a.ID,max(b.Value)
FROM cte a
INNER JOIN cte b ON a.row >=b.row
GROUP BY a.ID
drop table #table
Edit2 this also another script using "UNBOUNDED PRECEDING "
CREATE TABLE #table(id Int Identity(1, 1), value Int)
INSERT INTO #table([Value]) VALUES(1),(Null),(Null),(2),(Null),(Null)
select * ,max(t.value) over(order by Id Rows UNBOUNDED PRECEDING) maxValue
from #table t
drop table #table
check this link about "OVER Clause"
https://learn.microsoft.com/en-us/sql/t-sql/queries/select-over-clause-transact-sql
I have the following query
SELECT ProgramDate, [CountVal]= COUNT(ProgramDate)
FROM ProgramsTbl
WHERE (Type = 'Type1' AND ProgramDate = '10/18/11' )
GROUP BY ProgramDate
What happens is that if there is no record that matches the Type and ProgramDate, I do not get any records returned.
What I like to have outputted in the above is something like the following if there is no values returned. Notice how for the CountVal we have 0 even if there are no records returned that fit the match condition:
ProgramDate CountVal
10/18/11 0
This is a little more complicated than you would like however, it is very possible. You will first have to create a temporary table of dates. For example, the query below creates a range of dates from 2011-10-11 to 2011-10-20
CREATE TEMPORARY TABLE date_stamps AS
SELECT (date '2011-10-10' + new_number) AS date_stamp
FROM generate_series(1, 10) AS new_number;
Using this temporary table, you can select from it and left join your table ProgramsTbl. For example
SELECT date_stamp,COUNT(ProgramDate)
FROM date_stamps
LEFT JOIN ProgramsTbl ON ProgramsTbl.ProgramDate = date_stamps.date_stamp
WHERE Type = 'Type1'
GROUP BY ProgramDate;
Select ProgramDate, [CountVal]= SUM(occur)
from
(
SELECT ProgramDate, 1 occur
FROM ProgramsTbl
WHERE (Type = 'Type1' AND ProgramDate = '10/18/11' )
UNION
SELECT '10/18/11', 0
)
GROUP BY ProgramDate
Because each SELECT statement is really building a table of records you can use a SELECT query to build a table with both the program count and a default count of zero. This would require two SELECT queries (one to get the actual count, one to get the default count) and using a UNION to combine the two SELECT results into a single table.
From there you can SELECT from the UNIONed table to sum the CountVals (if the programDate occurs in the ProgramTable the CountVal will be
CountVal of the first query if it exists(>0) + CountVal of the second query (=0)).
This way even if there are no records for the desired programDate in ProgramTable you will get a record back indicating a count of 0.
This would look like:
SELECT ProgramDate, SUM(CountVal)
FROM
(SELECT ProgramDate, COUNT(*) AS CountVal
FROM ProgramsTbl
WHERE (Type = 'Type1' AND ProgramDate = '10/18/11' )
UNION
SELECT '10/18/11' AS ProgramDate, 0 AS CountVal) T1
Here's a solution that works on SQL Server; not sure about other db platforms:
DECLARE #Type VARCHAR(5) = 'Type1'
, #ProgramDate DATE = '10/18/2011'
SELECT pt.ProgramDate
, COUNT(pt2.ProgramDate)
FROM ( SELECT #ProgramDate AS ProgramDate
, #Type AS Type
) pt
LEFT JOIN ProgramsTbl pt2 ON pt.Type = pt2.Type
AND pt.ProgramDate = pt2.ProgramDate
GROUP BY pt.ProgramDate
Grunge but simple and efficient
SELECT '10/18/11' as 'Program Date', count(*) as 'count'
FROM ProgramsTbl
WHERE Type = 'Type1' AND ProgramDate = '10/18/11'
Try something along these lines. This will establish a row with a date of 10/18/11 that will definitely return. Then you left join to your actual data to get your desired count (which can now return 0 if there are no corresponding rows).
To do this for more than 1 date, you'd want to build a Date table that holds a list of all dates you want to query (so substitute the "select '10/18/11'" with "select Date from DateTbl").
SELECT ProgDt.ProgDate, [CountVal]= COUNT(ProgramsTbl.ProgramDate)
FROM (SELECT '10/18/11' as 'ProgDate') ProgDt
LEFT JOIN ProgramsTbl
ON ProgDt.ProgDate = ProgramsTbl.ProgramDate
WHERE (Type = 'Type1')
GROUP BY ProgDt.ProgDate
To create a date table that you can use for querying, do this (assumes SQL Server 2005+):
create table Dates (MyDate datetime)
go
insert into Dates
select top 100000 row_number() over (order by s1.name)
from master..spt_values s1, master..spt_values s2
go
Why am i getting a #1222 - The used SELECT statements have a different number of columns
? i am trying to load wall posts from this users friends and his self.
SELECT u.id AS pid, b2.id AS id, b2.message AS message, b2.date AS date FROM
(
(
SELECT b.id AS id, b.pid AS pid, b.message AS message, b.date AS date FROM
wall_posts AS b
JOIN Friends AS f ON f.id = b.pid
WHERE f.buddy_id = '1' AND f.status = 'b'
ORDER BY date DESC
LIMIT 0, 10
)
UNION
(
SELECT * FROM
wall_posts
WHERE pid = '1'
ORDER BY date DESC
LIMIT 0, 10
)
ORDER BY date DESC
LIMIT 0, 10
) AS b2
JOIN Users AS u
ON b2.pid = u.id
WHERE u.banned='0' AND u.email_activated='1'
ORDER BY date DESC
LIMIT 0, 10
The wall_posts table structure looks like id date privacy pid uid message
The Friends table structure looks like Fid id buddy_id invite_up_date status
pid stands for profile id. I am not really sure whats going on.
The first statement in the UNION returns four columns:
SELECT b.id AS id,
b.pid AS pid,
b.message AS message,
b.date AS date
FROM wall_posts AS b
The second one returns six, because the * expands to include all the columns from WALL_POSTS:
SELECT b.id,
b.date,
b.privacy,
b.pid.
b.uid message
FROM wall_posts AS b
The UNION and UNION ALL operators require that:
The same number of columns exist in all the statements that make up the UNION'd query
The data types have to match at each position/column
Use:
FROM ((SELECT b.id AS id,
b.pid AS pid,
b.message AS message,
b.date AS date
FROM wall_posts AS b
JOIN Friends AS f ON f.id = b.pid
WHERE f.buddy_id = '1' AND f.status = 'b'
ORDER BY date DESC
LIMIT 0, 10)
UNION
(SELECT id,
pid,
message,
date
FROM wall_posts
WHERE pid = '1'
ORDER BY date DESC
LIMIT 0, 10))
You're taking the UNION of a 4-column relation (id, pid, message, and date) with a 6-column relation (* = the 6 columns of wall_posts). SQL doesn't let you do that.
(
SELECT b.id AS id, b.pid AS pid, b.message AS message, b.date AS date FROM
wall_posts AS b
JOIN Friends AS f ON f.id = b.pid
WHERE f.buddy_id = '1' AND f.status = 'b'
ORDER BY date DESC
LIMIT 0, 10
)
UNION
(
SELECT id, pid , message , date
FROM
wall_posts
WHERE pid = '1'
ORDER BY date DESC
LIMIT 0, 10
)
You were selecting 4 in the first query and 6 in the second, so match them up.
Beside from the answer given by #omg-ponies; I just want to add that this error also occur in variable assignment. In my case I used an insert; associated with that insert was a trigger. I mistakenly assign different number of fields to different number of variables. Below is my case details.
INSERT INTO tab1 (event, eventTypeID, fromDate, toDate, remarks)
-> SELECT event, eventTypeID,
-> fromDate, toDate, remarks FROM rrp group by trainingCode;
ERROR 1222 (21000): The used SELECT statements have a different number of columns
So you see I got this error by issuing an insert statement instead of union statement. My case difference were
I issued a bulk insert sql
i.e. insert into tab1 (field, ...) as select field, ... from tab2
tab2 had an on insert trigger; this trigger basically decline duplicates
It turns out that I had an error in the trigger. I fetch record based on new input data and assigned them in incorrect number of variables.
DELIMITER ##
DROP TRIGGER trgInsertTrigger ##
CREATE TRIGGER trgInsertTrigger
BEFORE INSERT ON training
FOR EACH ROW
BEGIN
SET #recs = 0;
SET #trgID = 0;
SET #trgDescID = 0;
SET #trgDesc = '';
SET #district = '';
SET #msg = '';
SELECT COUNT(*), t.trainingID, td.trgDescID, td.trgDescName, t.trgDistrictID
INTO #recs, #trgID, #trgDescID, #proj, #trgDesc, #district
from training as t
left join trainingDistrict as tdist on t.trainingID = tdist.trainingID
left join trgDesc as td on t.trgDescID = td.trgDescID
WHERE
t.trgDescID = NEW.trgDescID
AND t.venue = NEW.venue
AND t.fromDate = NEW.fromDate
AND t.toDate = NEW.toDate
AND t.gender = NEW.gender
AND t.totalParticipants = NEW.totalParticipants
AND t.districtIDs = NEW.districtIDs;
IF #recs > 0 THEN
SET #msg = CONCAT('Error: Duplicate Training: previous ID ', CAST(#trgID AS CHAR CHARACTER SET utf8) COLLATE utf8_bin);
SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = #msg;
END IF;
END ##
DELIMITER ;
As you can see i am fetching 5 fields but assigning them in 6 var. (My fault totally I forgot to delete the variable after editing.
You are using MySQL Union.
UNION is used to combine the result from multiple SELECT statements into a single result set.
The column names from the first SELECT statement are used as the column names for the results returned. Selected columns listed in corresponding positions of each SELECT statement should have the same data type. (For example, the first column selected by the first statement should have the same type as the first column selected by the other statements.)
Reference: MySQL Union
Your first select statement has 4 columns and second statement has 6 as you said wall_post has 6 column.
You should have same number of column and also in same order in both statement.
otherwise it shows error or wrong data.