My problem is that I concatenate the values of column col2 but in the When I have to replace them with the values in Then. For some reason my code doesn't work when I put this code inside my query, is there another way to do it? Would using Replace be good in this case? Could you give an example?
So my code is this one:
cte(col1, AliasCol) as
(Select col1,
CASE
WHEN Replace(Replace( LISTAGG(DISTINCT CONCAT( ', ', col2)) WITHIN GROUP
(ORDER BY CONCAT( ', ',col2)),',',''),' ','') = 'A' THEN 'Z'
WHEN Replace(Replace( LISTAGG(DISTINCT CONCAT( ', ', col2)) WITHIN GROUP
(ORDER BY CONCAT( ', ', col2)),',',''),' ','') = 'B' THEN 'Y'
WHEN Replace(Replace( LISTAGG(DISTINCT CONCAT( ', ', col2)) WITHIN GROUP
(ORDER BY CONCAT( ', ', col2)),',',''),' ','') = 'C' THEN 'X'
END
FROM Table
Where
col2 IN ('A','B','C','D')
and col >= (select TodaysDate from Date)
GROUP By col1
)
My output should be: ZYXD
Edit:
My col2 column displays all codes like this:
A
B
C
D
After I concat them to this ABCD the value of ABCD should be replace by ZYXD. Replacing 'A' by 'Z', 'Y' by 'B' and 'C' by X'.
Try this:
WITH MYTAB(COL1, COL2) AS
(
VALUES
(1, 'A')
, (1, 'A')
, (1, 'B')
, (1, 'C')
, (1, 'D')
)
SELECT
COL1
, TRANSLATE(LISTAGG(DISTINCT COL2) WITHIN GROUP (ORDER BY COL2), 'ZYX', 'ABC') MY_OUT
FROM MYTAB
GROUP BY COL1;
Related
Why does this return . when col1 contains a blank value?
CONCAT(NULLIF([COL1],''),'.')
I have 3 columns that i need to concatenate with a . in between, sometimes the column contains a blank value. In that case the trailing . should not be concatenated. What functions do I use?
col1 col2 col3
A 1 x
B 2
expected results:
A.1.X
B.2
test code:
DECLARE #tbl TABLE(a varchar(100),b varchar(100),c varchar(100))
INSERT INTO #tbl
SELECT 'A','1','X' UNION
SELECT 'B','2','' UNION
SELECT 'C','','' UNION
SELECT '','1','X' UNION
SELECT 'B','','' UNION
SELECT 'C','',''
SELECT CONCAT ( Nullif(a,''),'.' + nullif(b,''), '.' + nullif(c,'')) AS Contact_Result FROM #tbl;
You can use SQL CONCAT this way
SELECT CONCAT ( a,IIF((NULLIF(a,'')+NULLIF(b,'')) IS NULL,'','.'),b,IIF((NULLIF(b,'')+NULLIF(c,'')) IS NULL,'','.'), c) AS Contact_Result FROM #tbl;
Test code below
DECLARE #tbl TABLE(a varchar(100),b varchar(100),c varchar(100))
INSERT INTO #tbl
SELECT 'A','1','X' UNION
SELECT 'B','2',NULL UNION
SELECT 'C',NULL,NULL
SELECT CONCAT ( a,IIF((NULLIF(a,'')+NULLIF(b,'')) IS NULL,'','.'),b,IIF((NULLIF(b,'')+NULLIF(c,'')) IS NULL,'','.'), c) AS Contact_Result FROM #tbl;
Contact_Result
A.1.X
B.2
C
Another common use of this kind of concats is to Concat a Full Name in this case the . (dot) is replaced by a ' ' (space), it makes things easier because you can use trim
DECLARE #tbl TABLE(a varchar(100),b varchar(100),c varchar(100))
INSERT INTO #tbl
SELECT 'FirtName','MiddleName','LastName' UNION
SELECT 'FistName','','LastName' UNION
SELECT '','','FullName'
SELECT LTRIM(CONCAT ( a,' ' + b,' ' + c)) AS Contact_Result FROM #tbl;
Result
FullName
FirtName MiddleName LastName
FistName LastName
THIS IS AN ANSWER THAT COVERS ALL POSSIBILITIES
SELECT SUBSTRING(CONCAT ('.' + NULLIF(a,''),'.' + NULLIF(b,''),'.' + NULLIF(c,'')),2,10000) AS Contact_Result FROM #tbl;
Complete test cases
DECLARE #tbl TABLE(a varchar(100),b varchar(100),c varchar(100))
INSERT INTO #tbl
SELECT 'a','','' UNION
SELECT 'a','b','' UNION
SELECT 'a','b','c' UNION
SELECT 'a','','c' UNION
SELECT '','b','c' UNION
SELECT '','b','' UNION
SELECT '','','c' UNION
SELECT '','',''
SELECT SUBSTRING(CONCAT ('.' + NULLIF(a,''),'.' + NULLIF(b,''),'.' + NULLIF(c,'')),2,10000) AS Contact_Result FROM #tbl;
Results
c
b
b.c
a
a.c
a.b
a.b.c
You'll have to go old school. I'm on my phone and can't test this.
ISNULL(NULLIF([COL1],'') + '.', '') +
ISNULL(NULLIF([COL2],'') + '.', '') +
ISNULL(NULLIF([COL3],''), '');
---------------- EDIT ----------------
Okay, this was not as easy on my phone as I thought. Here's my updated solution that works with SQL Server 2005+
-- sample data
declare #table table
(
id int identity,
col1 varchar(10),
col2 varchar(10),
col3 varchar(10)
);
insert #table (col1, col2, col3)
values ('a','b','c'), ('aa','bb',''), ('x','','z'), ('','p','pp'),
('!!!','',''), ('','','fff'), ('','','');
-- My solution
select col1, col2, col3, concatinatedValue =
case when cv like '.%' then stuff(cv, 1, 1,'') else cv end
from #table
cross apply (values
(isnull(nullif([col1],''), '') +
isnull('.'+nullif([col2],''), '') +
isnull('.'+nullif([col3],''), ''))) v(cv);
RETURNS
cv col1 col2 col3 concatinatedValue
--------- ----- ----- ----- -------------------
a.b.c a b c a.b.c
aa.bb aa bb aa.bb
x.z x z x.z
.p.pp p pp p.pp
!!! !!! !!!
.fff fff fff
<----------- blank line ----------->
This is a T-SQL related question. I am using SQL Server 2012.
I have a table like this:
I would like to have output like this:
Explanation:
For each employee, there will be a row. An employee has one or more assignments. Batch Id specifies this. Based on the batch Id, the column names will change (e.g. Country 1, Country 2 etc.).
Approach so far:
Un-pivot the source table like the following:
select
EmpId, 'Country ' + cast(BatchId as varchar) as [ColumnName],
Country as [ColumnValue]
from
SourceTable
UNION
select
EmpId, 'Pass ' + cast(BatchId as varchar) as [ColumnName],
Pass as [ColumnValue]
from
SourceTable
which gives each column's values as rows. Then, this result can be pivoted to get the desired output.
Questions:
Is there a better way of doing this?
At the moment, I know there will be fixed amount of batches, but, for future, if I like to make the pivoting part dynamic, what is the best approach?
Using tools like SSIS or SSRS, is it easier to handle the pivot dynamically?
Screw doing it in SQL.
Let SSRS do the work for you with a MATRIX. It will PIVOT for you without having to create dynamic SQL to handle the terrible limitation of needing to know all the columns.
For your data, you would have EMP ID as the ROW Group and PASS as your column grouping.
https://msdn.microsoft.com/en-us/library/dd207149.aspx
There are many possible solutions to achieve what you want (search for Dynamic Pivot on multiple columns)
SqlFiddleDemo
Warning: I assume that columns Country and Pass are NOT NULL
CREATE TABLE SourceTable(EmpId INT, BatchId INT,
Country NVARCHAR(100) NOT NULL, Pass NVARCHAR(5) NOT NULL);
INSERT INTO SourceTable(EmpId, BatchId, Country, Pass)
VALUES
(100, 1, 'UK', 'M'), (200, 2, 'USA', 'U'),
(100, 2, 'Romania', 'M'), (100, 3, 'India', 'MA'),
(100, 4, 'Hongkong', 'MA'), (300, 1, 'Belgium', 'U'),
(300, 2, 'Poland', 'U'), (200, 1, 'Australia', 'M');
/* Get Number of Columns Groups Country1..Country<MaxCount> */
DECLARE #max_count INT
,#sql NVARCHAR(MAX) = ''
,#columns NVARCHAR(MAX) = ''
,#i INT = 0
,#i_s NVARCHAR(10);
WITH cte AS
(
SELECT EmpId
,[cnt] = COUNT(*)
FROM SourceTable
GROUP BY EmpId
)
SELECT #max_count = MAX(cnt)
FROM cte;
WHILE #i < #max_count
BEGIN
SET #i += 1;
SET #i_s = CAST(#i AS NVARCHAR(10));
SET #columns += N',MAX(CASE WHEN [row_no] = ' + #i_s + ' THEN Country END) AS Country' + #i_s +
',MAX(CASE WHEN [row_no] = ' + #i_s + ' THEN Pass END) AS Pass' + #i_s;
END
SELECT #sql =
N';WITH cte AS (
SELECT EmpId, Country, Pass, [row_no] = ROW_NUMBER() OVER (PARTITION BY EmpId ORDER BY BatchId)
FROM SourceTable)
SELECT EmpId ' + #columns + N'
FROM cte
GROUP BY EmpId';
/* Debug */
/* SELECT #sql */
EXEC(#sql);
Or:
SQLFiddleDemo2
DECLARE #cols NVARCHAR(MAX),
#sql NVARCHAR(MAX) = '';
;WITH cte(col_name, rn) AS(
SELECT DISTINCT col_name = col_name + CAST(BatchId AS VARCHAR(10)),
rn = ROW_NUMBER() OVER(PARTITION BY EmpId ORDER BY BatchId)
FROM SourceTable
CROSS APPLY (VALUES ('Country', Country), ('Pass', Pass)) AS c(col_name, val)
)
SELECT #cols = STUFF((SELECT ',' + QUOTENAME(col_name)
FROM cte
ORDER BY rn /* If column order is important for you */
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
, 1, 1, '');
SET #sql =
N';WITH cte AS
(
SELECT EmpId, col_name = col_name + CAST(BatchId AS VARCHAR(10)), val
FROM SourceTable
CROSS APPLY (VALUES (''Country'', Country), (''Pass'', Pass)) AS c(col_name, val)
)
SELECT *
FROM cte
PIVOT
(
MAX(val)
FOR col_name IN (' + #cols + ')
) piv';
EXEC(#sql);
I want to retrieve data from the table based on a couple of columns, some with data, other with NULL. In the first code example below, the procedure is fine - all the rows are returned. In the second example no rows are returned - because NULL=NULL return FALSE.
The third example is more or less what I have in mind, when the column has NULL values, then this clause has to be "ignored" and only the data in the first two columns are used to return the rows based on these two columns.
SELECT * FROM XYZ
WHERE col1 IN ('a', 'b')
AND col2 IN ('c', 'd')
AND col3 IN ('e', 'f')
SELECT * FROM XYZ
WHERE col1 IN ('a', 'b')
AND col2 IN ('c', 'd')
AND col3 IN (NULL) --???
SELECT * FROM XYZ
WHERE col1 IN ('a', 'b')
AND col2 IN ('c', 'd')
--AND col3 IN (NULL) --IGNORED
Currently I use a dynamic SQL statement, but is very slow.
SET #EventCodeList =
(SELECT REPLACE(tEventCode, ' ', '') FROM tblActivityPerCC_Config WHERE tCostCenter = #CostCenter)
SET #EventCodeStr =
CASE WHEN #EventCodeList IS NULL THEN ' logs.tEventCode LIKE (''%'') '
ELSE ' logs.tEventCode IN (SELECT qValue FROM nsEMV.dbo.fncReturnCommaDelimitedStringAsTable(#EventCodeList))'
END
SET #SQLString = N'
SELECT
ccg.Field1,
logs.Field2
FROM dbo.tblEMV_Logsheet AS logs
INNER JOIN dbo.tblLookup_EMVEquipment AS ccg ON logs.tEquipmentKey = ccg.tEquipmentKey
WHERE tDate BETWEEN ''' + CONVERT(varchar(30), #BMonth) + ''' AND ''' + CONVERT(varchar(30), #EMonth) + '''
AND logs.tAreaCode IN ('XYZ', 'ABC')
AND ' + #EventCodeStr + ' --THE FOLLOWING COLUMNS MAY HAVE NULL VALUES
AND ' + #SourceStr + '
AND ' + #DestinationStr'
Any help would be appreciated.
IN RESPONSE TO Jayvee's SUGGESTION BELOW:
This does not do what was intended or I do something wrong!
CREATE TABLE #temp
(
value varchar(10),
value2 varchar(10)
)
INSERT INTO #temp (value, value2) SELECT '5', '3'
INSERT INTO #temp (value, value2) SELECT NULL, '2'
INSERT INTO #temp (value, value2) SELECT '4', NULL
INSERT INTO #temp (value, value2) SELECT '6', '2'
INSERT INTO #temp (value, value2) SELECT '6', NULL
INSERT INTO #temp (value, value2) SELECT '6', '4'
INSERT INTO #temp (value, value2) SELECT NULL, '1'
INSERT INTO #temp (value, value2) SELECT NULL, '4'
SELECT value as [value],value2 as [value2] FROM #temp
WHERE ISNULL(value,'') IN ('4')
AND ISNULL(value2,'') IN ('4')
DROP TABLE #temp
Try IS NULL
SELECT * FROM XYZ
WHERE col1 IN ('a', 'b')
AND col2 IN ('c', 'd')
AND col3 IS NULL -- Instead of IN (NULL)
for each column test it against your parameter and include the IS NULL test, combine these with parentheses, like this:
SELECT
*
FROM XYZ
WHERE (col1 IN ('a', 'b') OR col1 IS NULL)
AND (col2 IN ('c', 'd') OR col2 IS NULL)
AND (col3 IN (NULL) OR col3 IS NULL)
here col3 IN (NULL) is used to demonstrate a parameter that was not provided
something like this should work:
SELECT * FROM XYZ
WHERE ISNULL(col1,'') IN ('a', 'b','')
AND ISNULL(col2,'') IN ('c', 'd','')
AND ISNULL(col3,'') IN ('')
I have an unusual situation. Please consider the following code:
IF OBJECT_ID('tempdb..#CharacterTest') IS NOT NULL
DROP TABLE #CharacterTest
CREATE TABLE #CharacterTest
(
[ID] int IDENTITY(1, 1) NOT NULL,
[CharField] varchar(50) NULL
)
INSERT INTO #CharacterTest (CharField)
VALUES ('A')
, ('A')
, ('A')
, ('A')
, ('B')
, ('B')
, ('B')
, ('C')
, ('C')
, ('D')
, ('D')
, ('F')
, ('G')
, ('H')
, ('I')
, ('J')
, ('K')
, ('L')
, ('M')
, ('N')
, (' ')
, (' ')
, (' ')
, (NULL)
, ('');
I would like a query which gives me a character string like this:
A (16%), B (12%), C(8%)
Please notice the following:
I don't want to have empty strings, strings with all blanks, or nulls listed in the top 3, but I do want the percentage of values calculated using the entire record count for the table.
Ties can be ignored, so if there were 22 values in the list with 8% frequency, it's alright to simply return whichever one is first.
Percentages can be rounded to whole numbers.
I'd like to find the easiest way to write this query while still retaining T-SQL compatibility back to SQL Server 2005. What is the best way to do this? Window Functions?
I'd go for.
WITH T1
AS (SELECT [CharField],
100.0 * COUNT(*) OVER (PARTITION BY [CharField]) /
COUNT(*) OVER () AS Pct
FROM #CharacterTest),
T2
AS (SELECT DISTINCT TOP 3 *
FROM T1
WHERE [CharField] <> '' --Excludes all blank or NULL as well
ORDER BY Pct DESC)
SELECT STUFF((SELECT ',' + [CharField] + ' (' + CAST(CAST(ROUND(Pct,1) AS INT) AS VARCHAR(3)) + ')'
FROM T2
ORDER BY Pct DESC
FOR XML PATH('')), 1, 1, '') AS Result
My first attempt would probably be this. Not saying that it's the best way to handle it, but that it would work.
DECLARE #TotalCount INT
SELECT #TotalCount = COUNT(*) FROM #CharacterTest AS ct
SELECT TOP(3) CharField, COUNT(*) * 1.0 / #TotalCount AS OverallPercentage
FROM #CharacterTest AS ct
WHERE CharField IS NOT NULL AND REPLACE(CharField, ' ', '') <> ''
GROUP BY CharField
ORDER BY COUNT(*) desc
DROP TABLE #CharacterTest
This should get the character string you need:
declare #output varchar(200);
with cte as (
select CharField
, (count(*) * 100) / (select count(*) from #CharacterTest) as CharPct
, row_number() over (order by count(*) desc, CharField) as RowNum
from #CharacterTest
where replace(CharField, ' ', '') not like ''
group by CharField
)
select #output = coalesce(#output + ', ', '') + CharField + ' (' + cast(CharPct as varchar(11)) + '%)'
from cte
where RowNum <= 3
order by RowNum;
select #output;
-- Returns:
-- A (16%), B (12%), C (8%)
I would draw attention to storing a single character in a varchar(50) column, however.
Say I have a table A and it has 5 columns (Column1, Column2.. Column5), the values in each column is one char size and stored only
as alphabetic as follows
ID Column1 Column2 Column3 Column4 Column5
1 A C D A B
2 A D A B A
3 B K Q C Q
4 A K E E B
5 F K F F S
I need a count of each different value stored in column1 to column5, I want the following information
Column1 has A's count=3, B's count=1, F's count=1
Column2 has C's count=1, D's count=1, K's count=3
and so on
What is the correct way and format to return these values?
Thanks
You could try:
SELECT 'Col1' As 'Col', Column1 as 'Value', COUNT(*) as 'Ct'
FROM MyTable
GROUP BY Column1
UNION ALL
SELECT 'Col2', Column2, COUNT(*)
FROM MyTable
GROUP BY Column2
...
You will need to write an additional SELECT to UNION for each column you want to aggregate, but it will return the data you are after.
Can you just execute an individual query for each needed column using a GROUP BY?
SELECT Column1, COUNT(Column1) FROM TableName
GROUP BY Column1
You can use unpivot in a derived table (or CTE) and group by column name and value in the outer query.
Try this:
declare #T table
(
ID int,
Column1 char(1),
Column2 char(1),
Column3 char(1),
Column4 char(1),
Column5 char(1)
)
insert into #T values
(1, 'A', 'C', 'D', 'A', 'B'),
(2, 'A', 'D', 'A', 'B', 'A'),
(3, 'B', 'K', 'Q', 'C', 'Q'),
(4, 'A', 'K', 'E', 'E', 'B'),
(5, 'F', 'K', 'F', 'F', 'S')
;with C as
(
select ID, Col, Val
from (
select ID, Column1, Column2, Column3, Column4, Column5
from #T
) as T
unpivot (Val for Col in (Column1, Column2, Column3, Column4, Column5)) as U
)
select Col, Val, count(*) as ValCount
from C
group by Col, Val
order by Col
The union approach is going to server you best. The individual query for each union would look something like this:
Select Distinct Column1, COUNT(Column1)OVER(PARTITION BY Column1) Col1Count, 'Column1' ColumnName
From ColTable
Union All
...