How can I append a string to a field based on a condition without having to repeat the same case statement multiple times in the SELECT?
For example.
CASE WHEN t1.location = A THEN '1111' ELSE '2222' + t1.telephone1,
CASE WHEN t1.location = A THEN '1111' ELSE '2222' + t1.telephone2
If I had to select 10 columns this way I would have to copy paste 10 times. I was thinking of a possible variable or CTE but that seems like I would have to repeat the case anyway?
You should be able to accomplish this with a CTE:
with t1_as_cte (myexpression,telephone1,telephone2)
as (
select CASE WHEN t1.location = A THEN '1111' ELSE '2222' end myexpression,
t1.telephone1,
t1.telephone2
from mytable t1
)
select myexpression + telephone1, myexpression + telephone2
from t1_as_cte
So if you have 10 phone number columns (for some reason) that you want to prefix all of them based on location, then use CROSS APPLY VALUES.
DROP TABLE IF EXISTS #Test;
CREATE TABLE #Test
(
TestID TINYINT IDENTITY PRIMARY KEY
,[Location] VARCHAR(1)
,Phone1 VARCHAR(15)
,Phone2 VARCHAR(15)
,Phone3 VARCHAR(15)
,Phone4 VARCHAR(15)
,Phone5 VARCHAR(15)
,Phone6 VARCHAR(15)
,Phone7 VARCHAR(15)
,Phone8 VARCHAR(15)
,Phone9 VARCHAR(15)
,Phone10 VARCHAR(15)
)
;
INSERT INTO #Test
([Location],Phone1,Phone2,Phone3,Phone4,Phone5,Phone6,Phone7,Phone8,Phone9,Phone10)
VALUES
('A','PhoneA','PhoneA','PhoneA','PhoneA','PhoneA','PhoneA','PhoneA','PhoneA','PhoneA','PhoneA')
,('B','PhoneB','PhoneB','PhoneB','PhoneB','PhoneB','PhoneB','PhoneB','PhoneB','PhoneB','PhoneB')
;
SELECT
TST.TestID
,Phone1 = CONCAT(PFX.Prefix,TST.Phone1)
,Phone2 = CONCAT(PFX.Prefix,TST.Phone2)
,Phone3 = CONCAT(PFX.Prefix,TST.Phone3)
,Phone4 = CONCAT(PFX.Prefix,TST.Phone4)
,Phone5 = CONCAT(PFX.Prefix,TST.Phone5)
,Phone6 = CONCAT(PFX.Prefix,TST.Phone6)
,Phone7 = CONCAT(PFX.Prefix,TST.Phone7)
,Phone8 = CONCAT(PFX.Prefix,TST.Phone8)
,Phone9 = CONCAT(PFX.Prefix,TST.Phone9)
,Phone10 = CONCAT(PFX.Prefix,TST.Phone10)
FROM #Test AS TST
CROSS APPLY
(
VALUES(CASE WHEN TST.[Location] = 'A' THEN '1111' ELSE '2222' END)
) AS PFX (Prefix)
You can use a function. Or you can use Cross Apply and Outer Apply
Related
I have a WHERE clause that has a nested OR statement, as seen here:
-- Declaration of variables
DECLARE
#PageSize INT,
#PageNumber INT,
#SearchPhraseOne VARCHAR(20),
#SearchPhraseTwo VARCHAR(20),
#FilterCategory VARCHAR(30),
#FilterStatus TINYINT,
#NeedsFollowUp TINYINT,
#NeedsTraining TINYINT,
#NeedsInitialVacc TINYINT;
SET #PageNumber = 1;
SET #PageSize = 100;
SET #SearchPhraseOne = null;
SET #SearchPhraseTwo = null;
SET #FilterCategory = 'High Exposure';
SET #FilterStatus = null;
SET #NeedsFollowUp = 1;
SET #NeedsTraining = null;
SET #NeedsInitialVacc = null;
select * from(
select
vel.fullName,
vel.EecEmpNo,
vel.EecLocation,
vel.EecDateOfLastHire,
job.JbcDesc,
vei.eiInitialBBPDate,
vei.eiVCGivenDate,
iif(jv.verTypeName is null, 'Low Risk', jv.verTypeName) as vaccineCategory,
vel.eecEmplStatus,
count(distinct vh.vhID) as vaccCount,
max(isnull(vh.vhNextDateScheduled, null)) as maxNextDateScheduled,
max(cast(vh.vhSeriesComplete as int)) as seriesComplete,
iif(vel.eecEmplStatus = 'T', null,
coalesce(iif(max(cast(vh.vhSeriesComplete as int)) = 1, null, max(isnull(vh.vhNextDateScheduled, null))), -- check if the vaccine items have a SeriesComplete of 1, otherwise use NextDateScheduled
iif(vei.eiInitialBBPDate is not null, null, vel.EecDateOfLastHire), -- check if the InitialBBPDate is not null, if it isn't use DateOfLastHire
iif(vei.eiVCGivenDate is not null, null, vel.EecDateOfLastHire), null)) as actionDate -- check if the OrientationDate is not null, if it isn't use DateOfLastHire
-- if all three of these values are null then there's no ActionDate
-- Terminated employees will not have an action date assigned even if there's a match
from dbo.vaccEmpList vel
left join dbo.vaccEmployeeInfo vei on vei.eiEmployeeNo = vel.EecEmpNo
left join dbo.vaccVaccinationHistory vh on vh.vhEmployeeNo = vel.EecEmpNo
left join dbo.vaccVaccineTypeLookup vt on vh.vhVaccinationTypeID = vt.vtlVaccineTypeID and vt.vtIsActive = 1 -- Only get active vaccination types
join dbo.U_JobCode job on vel.EecJobCode = job.JbcJobCode
left join dbo.JobVerficationXref jv on vel.EecJobCode = jv.JobCode and jv.verName = 'Vaccination Category'
group by vel.fullName, vel.EecEmpNo, job.JbcDesc, jv.verTypeName, vel.EecLocation, vel.eecEmplStatus, vei.eiInitialBBPDate, vei.eiVCGivenDate, vel.EecDateOfLastHire
) as searchResults
where (
(
#SearchPhraseOne is null
or searchResults.fullName like #SearchPhraseOne + '%'
or searchResults.EecEmpNo = #SearchPhraseOne
)
and (
#SearchPhraseTwo is null
or searchResults.fullName like #SearchPhraseTwo + '%'
or searchResults.EecEmpNo = #SearchPhraseTwo
) -- Employee Name/ID
and (
#FilterStatus is null
or (searchResults.eecEmplStatus = 'A' or searchResults.eecEmplStatus = 'L')
) -- Employee Status
and (
#FilterCategory is null
or searchResults.vaccineCategory = #FilterCategory
) -- Employee Vaccination Category
and ( -- ISSUES OCCUR HERE
(#NeedsTraining is null
or (searchResults.actionDate is not null
and (searchResults.eiInitialBBPDate is null or searchResults.eiVCGivenDate is null))
) -- Needs Training if either of these two date values are null
or (#NeedsInitialVacc is null
or (searchResults.actionDate is not null
and (searchResults.vaccCount = 0))
-- Needs Initial Vaccination if there are no vaccine records
)
or (#NeedsFollowUp is null
or (searchResults.actionDate is not null
and ((searchResults.seriesComplete is null or searchResults.seriesComplete = 0) and searchResults.maxNextDateScheduled is not null))
-- Needs a follow-up date if no series complete was detected
)
)
)
The #NeedsFollowUp, #NeedsInitialVacc, and #NeedsTraining variables are all set by the variables above. When one or more of these are set to "1", the query should return employee entries that match the criteria inside their related statements. For example, if the "NeedsFollowUp" and "NeedsTraining" values are set to "1" then the query should return employees that need a follow-up or employees that need training.
Right now, when I set all three to "1" I receive the combined results I'm looking for, but if any of them are set to null, then the query doesn't return the correct results.
EDIT: Here's a reproducible example of what I'm seeing.
I think the way the clauses are set up is causing an issue, but I'm not really sure how to fix this. How can I get the OR statements to work in the way I described above?
I was able to make the OR clauses work correcting by switching from is null to is not null in my where clauses. Using the minimal example, it would look like this:
select * from AGENTS
where (
(#NeedsName is not null and AGENTS.AGENT_NAME is null)
or
(#NeedsCountry is not null and AGENTS.COUNTRY is null)
or
(#NeedsCountry is null and #NeedsName is null)
)
Be sure to include an additional clause for when all options are NULL, so that you can return the appropriate number of rows.
Here's a working version.
CREATE TABLE #E (
ID INT ,
NAME VARCHAR(20),
RESULT VARCHAR(20)
)
INSERT INTO #E VALUES (1,'DOMAIN','marka')
INSERT INTO #E VALUES (1,'EXTENSION','.com')
INSERT INTO #E VALUES (1,'TYPE','WEB')
SELECT * FROM #E
Declare #DomainName varchar(20) = ''
--How can I put the values(RESULT) in a result side by side
SELECT RESULT FROM #E WHERE ID=1 AND NAME IN ('DOMAIN','EXTENSION')
How can I put the values(RESULT) in a result side by side
How can I do it? --> Set #DomainName = 'marka.com'
#DomainName = 'marka.com' --How do I add
Are you looking for conditional aggregation?
select max(case when name = 'DOMAIN' then result end) as domain,
max(case when name = 'EXTENSION' then result end) as extension,
max(case when name = 'TYPE' then result end) as type
from #E e
group by id;
WITH res1
AS (
SELECT result
,ID
FROM #E
WHERE name = 'DOMAIN'
)
,res2
AS (
SELECT result
,ID
FROM #E
WHERE name = 'EXTENSION'
)
SELECT CONCAT (
res1.result
,res2.result
)
FROM RES1
INNER JOIN RES2 ON RES1.ID = RES2.ID
Demo
DECLARE #DomainName varchar(20) = ''
SELECT #DomainName = (DOMAIN + EXTENSION) FROM
(
SELECT *
FROM #E
WHERE ID=1
AND NAME IN ('DOMAIN','EXTENSION')
) as main
PIVOT
(
MAX(RESULT)
FOR NAME IN ([DOMAIN],[EXTENSION])
) piv
SELECT #DomainName
I have two tables named Retail and Activity and the data is as shown below:
Retail Table
Activity Table
My main concern is about Ok and Fault column of the table Retail, as you can see it contains comma separated value of ActivityId.
What i want is, if the Ok column has ActivityId the corresponding column will have Yes, if the Fault column has ActivityId then it should be marked as No
Note I have only four columns that is fixed, it means i have to check that either four of the columns has its value in Ok or Fault, if yes then only i have to print yes or no, otherwise null.
Desired result should be like :
If the value is in Ok then yes other wise No.
I guessing you want to store 'yes' or 'No' in some column. Below is the query to update that column :
UPDATE RetailTable
SET <Result_Column>=
CASE
WHEN Ok IS NOT NULL THEN 'Yes'
WHEN Fault IS NOT NULL THEN 'No'
END
You can use below code as staring point:
DECLARE #Retail TABLE
(
PhoneAuditID INT,
HandsetQuoteID INT,
Ok VARCHAR(50)
)
INSERT INTO #Retail VALUES (1, 1009228, '4,22,5')
INSERT INTO #Retail VALUES (2, 1009229, '1')
DECLARE #Activity TABLE
(
ID INT,
Activity VARCHAR(50)
)
INSERT INTO #Activity VALUES (1, 'BatteryOK?'), (4, 'PhonePowersUp?'), (22,'SomeOtherQuestion?'), (5,'LCD works OK?')
SELECT R.[PhoneAuditID], R.[HandsetQuoteID], A.[Activity], [Ok] = CASE WHEN A.[ID] IS NOT NULL THEN 'Yes' END
FROM #Retail R
CROSS APPLY dbo.Split(R.Ok, ',') S
LEFT JOIN #Activity A ON S.[items] = A.[ID]
I have used Split function provided here:
separate comma separated values and store in table in sql server
Try following query. i have used pivot to show row as columns. I have also used split function to split id values which you can find easily on net:
CREATE TABLE PhoneAudit
(
PhoneAuditRetailID INT,
HandsetQuoteID INT,
Ok VARCHAR(50),
Fault VARCHAR(50)
)
INSERT INTO PhoneAudit VALUES (1,10090,'1,2','3')
CREATE TABLE ActivityT
(
ID INT,
Activity VARCHAR(100)
)
INSERT INTO ActivityT VALUES (1,'Battery')
INSERT INTO ActivityT VALUES (2,'HasCharger')
INSERT INTO ActivityT VALUES (3,'HasMemoryCard')
INSERT INTO ActivityT VALUES (4,'Test')
DECLARE #SQL AS NVARCHAR(MAX)
DECLARE #ColumnName AS NVARCHAR(MAX)
SELECT #ColumnName= ISNULL(#ColumnName + ',','') + QUOTENAME(Activity) FROM (SELECT DISTINCT Activity FROM ActivityT) AS Activities
SET #SQL = 'SELECT PhoneAuditRetailID, HandsetQuoteID,
' + #ColumnName + '
FROM
(SELECT
t1.PhoneAuditRetailID,
t1.HandsetQuoteID,
TEMPOK.*
FROM
PhoneAudit t1
CROSS APPLY
(
SELECT
Activity,
(CASE WHEN ID IN (SELECT * FROM dbo.SplitIDs(t1.Ok,'',''))
THEN ''YES''
ELSE ''NO''
END) AS VALUE
FROM
ActivityT t2
) AS TEMPOK) AS t3
PIVOT
(
MIN(VALUE)
FOR Activity IN ('+ #ColumnName + ')
) AS PivotTable;'
EXEC sp_executesql #SQL
DROP TABLE PhoneAudit
DROP TABLE ActivityT
There are several ways to do this. If you are looking for a purely declarative approach, you could use a recursive CTE. The following example of this is presented as a generic solution with test data which should be adaptable to your needs:
Declare #Delimiter As Varchar(2)
Set #Delimiter = ','
Declare #Strings As Table
(
String Varchar(50)
)
Insert Into #Strings
Values
('12,345,6,78,9'),
(Null),
(''),
('123')
;With String_Columns As
(
Select
String,
Case
When String Is Null Then ''
When CharIndex(#Delimiter,String,0) = 0 Then ''
When Len(String) = 0 Then ''
Else Left(String,CharIndex(#Delimiter,String,0)-1)
End As String_Column,
Case
When String Is Null Then ''
When CharIndex(#Delimiter,String,0) = 0 Then ''
When Len(String) = 0 Then ''
When Len(Left(String,CharIndex(#Delimiter,String,0)-1)) = 0 Then ''
Else Right(String,Len(String)-Len(Left(String,CharIndex(#Delimiter,String,0)-1))-1)
End As Remainder,
1 As String_Column_Number
From
#Strings
Union All
Select
String,
Case
When CharIndex(#Delimiter,Remainder,0) = 0 Then Remainder
Else Left(Remainder,CharIndex(#Delimiter,Remainder,0)-1)
End As Remainder,
Case
When CharIndex(#Delimiter,Remainder,0) = 0 Then ''
When Len(Left(Remainder,CharIndex(#Delimiter,Remainder,0)-1)) = 0 Then ''
Else Right(Remainder,Len(Remainder)-Len(Left(Remainder,CharIndex(#Delimiter,Remainder,0)-1))-1)
End As Remainder,
String_Column_Number + 1
From
String_Columns
Where
(Remainder Is Not Null And Len(Remainder) > 1)
)
Select
String,
String_Column,
String_Column_Number
From
String_Columns
Imagine the following two tables:
create table MainTable (
MainId integer not null, -- This is the index
Data varchar(100) not null
)
create table OtherTable (
MainId integer not null, -- MainId, Name combined are the index.
Name varchar(100) not null,
Status tinyint not null
)
Now I want to select all the rows from MainTable, while combining all the rows that match each MainId from OtherTable into a single field in the result set.
Imagine the data:
MainTable:
1, 'Hi'
2, 'What'
OtherTable:
1, 'Fish', 1
1, 'Horse', 0
2, 'Fish', 0
I want a result set like this:
MainId, Data, Others
1, 'Hi', 'Fish=1,Horse=0'
2, 'What', 'Fish=0'
What is the most elegant way to do this?
(Don't worry about the comma being in front or at the end of the resulting string.)
There is no really elegant way to do this in Sybase. Here is one method, though:
select
mt.MainId,
mt.Data,
Others = stuff((
max(case when seqnum = 1 then ','+Name+'='+cast(status as varchar(255)) else '' end) +
max(case when seqnum = 2 then ','+Name+'='+cast(status as varchar(255)) else '' end) +
max(case when seqnum = 3 then ','+Name+'='+cast(status as varchar(255)) else '' end)
), 1, 1, '')
from MainTable mt
left outer join
(select
ot.*,
row_number() over (partition by MainId order by status desc) as seqnum
from OtherTable ot
) ot
on mt.MainId = ot.MainId
group by
mt.MainId, md.Data
That is, it enumerates the values in the second table. It then does conditional aggregation to get each value, using the stuff() function to handle the extra comma. The above works for the first three values. If you want more, then you need to add more clauses.
Well, here is how I implemented it in Sybase 13.x. This code has the advantage of not being limited to a number of Names.
create proc
as
declare
#MainId int,
#Name varchar(100),
#Status tinyint
create table #OtherTable (
MainId int not null,
CombStatus varchar(250) not null
)
declare OtherCursor cursor for
select
MainId, Name, Status
from
Others
open OtherCursor
fetch OtherCursor into #MainId, #Name, #Status
while (##sqlstatus = 0) begin -- run until there are no more
if exists (select 1 from #OtherTable where MainId = #MainId) begin
update #OtherTable
set CombStatus = CombStatus + ','+#Name+'='+convert(varchar, Status)
where
MainId = #MainId
end else begin
insert into #OtherTable (MainId, CombStatus)
select
MainId = #MainId,
CombStatus = #Name+'='+convert(varchar, Status)
end
fetch OtherCursor into #MainId, #Name, #Status
end
close OtherCursor
select
mt.MainId,
mt.Data,
ot.CombStatus
from
MainTable mt
left join #OtherTable ot
on mt.MainId = ot.MainId
But it does have the disadvantage of using a cursor and a working table, which can - at least with a lot of data - make the whole process slow.
I tried searching around, but I couldn't find anything that would help me out.
I'm trying to do this in SQL:
declare #locationType varchar(50);
declare #locationID int;
SELECT column1, column2
FROM viewWhatever
WHERE
CASE #locationType
WHEN 'location' THEN account_location = #locationID
WHEN 'area' THEN xxx_location_area = #locationID
WHEN 'division' THEN xxx_location_division = #locationID
I know that I shouldn't have to put '= #locationID' at the end of each one, but I can't get the syntax even close to being correct. SQL keeps complaining about my '=' on the first WHEN line...
How can I do this?
declare #locationType varchar(50);
declare #locationID int;
SELECT column1, column2
FROM viewWhatever
WHERE
#locationID =
CASE #locationType
WHEN 'location' THEN account_location
WHEN 'area' THEN xxx_location_area
WHEN 'division' THEN xxx_location_division
END
without a case statement...
SELECT column1, column2
FROM viewWhatever
WHERE
(#locationType = 'location' AND account_location = #locationID)
OR
(#locationType = 'area' AND xxx_location_area = #locationID)
OR
(#locationType = 'division' AND xxx_location_division = #locationID)
Here you go.
SELECT
column1,
column2
FROM
viewWhatever
WHERE
CASE
WHEN #locationType = 'location' AND account_location = #locationID THEN 1
WHEN #locationType = 'area' AND xxx_location_area = #locationID THEN 1
WHEN #locationType = 'division' AND xxx_location_division = #locationID THEN 1
ELSE 0
END = 1
I'd say this is an indicator of a flawed table structure. Perhaps the different location types should be separated in different tables, enabling you to do much richer querying and also avoid having superfluous columns around.
If you're unable to change the structure, something like the below might work:
SELECT
*
FROM
Test
WHERE
Account_Location = (
CASE LocationType
WHEN 'location' THEN #locationID
ELSE Account_Location
END
)
AND
Account_Location_Area = (
CASE LocationType
WHEN 'area' THEN #locationID
ELSE Account_Location_Area
END
)
And so forth... We can't change the structure of the query on the fly, but we can override it by making the predicates equal themselves out.
EDIT: The above suggestions are of course much better, just ignore mine.
The problem with this is that when the SQL engine goes to evaluate the expression, it checks the FROM portion to pull the proper tables, and then the WHERE portion to provide some base criteria, so it cannot properly evaluate a dynamic condition on which column to check against.
You can use a WHERE clause when you're checking the WHERE criteria in the predicate, such as
WHERE account_location = CASE #locationType
WHEN 'business' THEN 45
WHEN 'area' THEN 52
END
so in your particular case, you're going to need put the query into a stored procedure or create three separate queries.
OR operator can be alternative of case when in where condition
ALTER PROCEDURE [dbo].[RPT_340bClinicDrugInventorySummary]
-- Add the parameters for the stored procedure here
#ClinicId BIGINT = 0,
#selecttype int,
#selectedValue varchar (50)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
SELECT
drugstock_drugname.n_cur_bal,drugname.cdrugname,clinic.cclinicname
FROM drugstock_drugname
INNER JOIN drugname ON drugstock_drugname.drugnameid_FK = drugname.drugnameid_PK
INNER JOIN drugstock_drugndc ON drugname.drugnameid_PK = drugstock_drugndc.drugnameid_FK
INNER JOIN drugndc ON drugstock_drugndc.drugndcid_FK = drugndc.drugid_PK
LEFT JOIN clinic ON drugstock_drugname.clinicid_FK = clinic.clinicid_PK
WHERE (#ClinicId = 0 AND 1 = 1)
OR (#ClinicId != 0 AND drugstock_drugname.clinicid_FK = #ClinicId)
-- Alternative Case When You can use OR
AND ((#selecttype = 1 AND 1 = 1)
OR (#selecttype = 2 AND drugname.drugnameid_PK = #selectedValue)
OR (#selecttype = 3 AND drugndc.drugid_PK = #selectedValue)
OR (#selecttype = 4 AND drugname.cdrugclass = 'C2')
OR (#selecttype = 5 AND LEFT(drugname.cdrugclass, 1) = 'C'))
ORDER BY clinic.cclinicname, drugname.cdrugname
END
Please try this query.
Answer To above post:
select #msgID, account_id
from viewMailAccountsHeirachy
where
CASE #smartLocationType
WHEN 'store' THEN account_location
WHEN 'area' THEN xxx_location_area
WHEN 'division' THEN xxx_location_division
WHEN 'company' THEN xxx_location_company
END = #smartLocation
Try this:
WHERE (
#smartLocationType IS NULL
OR account_location = (
CASE
WHEN #smartLocationType IS NOT NULL
THEN #smartLocationType
ELSE account_location
END
)
)
CREATE PROCEDURE [dbo].[Temp_Proc_Select_City]
#StateId INT
AS
BEGIN
SELECT * FROM tbl_City
WHERE
#StateID = CASE WHEN ISNULL(#StateId,0) = 0 THEN 0 ELSE StateId END ORDER BY CityName
END
Try this query, it's very easy and useful: Its ready to execute!
USE tempdb
GO
IF NOT OBJECT_ID('Tempdb..Contacts') IS NULL
DROP TABLE Contacts
CREATE TABLE Contacts(ID INT, FirstName VARCHAR(100), LastName VARCHAR(100))
INSERT INTO Contacts (ID, FirstName, LastName)
SELECT 1, 'Omid', 'Karami'
UNION ALL
SELECT 2, 'Alen', 'Fars'
UNION ALL
SELECT 3, 'Sharon', 'b'
UNION ALL
SELECT 4, 'Poja', 'Kar'
UNION ALL
SELECT 5, 'Ryan', 'Lasr'
GO
DECLARE #FirstName VARCHAR(100)
SET #FirstName = 'Omid'
DECLARE #LastName VARCHAR(100)
SET #LastName = ''
SELECT FirstName, LastName
FROM Contacts
WHERE
FirstName = CASE
WHEN LEN(#FirstName) > 0 THEN #FirstName
ELSE FirstName
END
AND
LastName = CASE
WHEN LEN(#LastName) > 0 THEN #LastName
ELSE LastName
END
GO
In general you can manage case of different where conditions in this way
SELECT *
FROM viewWhatever
WHERE 1=(CASE <case column or variable>
WHEN '<value1>' THEN IIF(<where condition 1>,1,0)
WHEN '<value2>' THEN IIF(<where condition 2>,1,0)
ELSE IIF(<else condition>,1,0)
END)
Case Statement in SQL Server Example
Syntax
CASE [ expression ]
WHEN condition_1 THEN result_1
WHEN condition_2 THEN result_2
...
WHEN condition_n THEN result_n
ELSE result
END
Example
SELECT contact_id,
CASE website_id
WHEN 1 THEN 'TechOnTheNet.com'
WHEN 2 THEN 'CheckYourMath.com'
ELSE 'BigActivities.com'
END
FROM contacts;
OR
SELECT contact_id,
CASE
WHEN website_id = 1 THEN 'TechOnTheNet.com'
WHEN website_id = 2 THEN 'CheckYourMath.com'
ELSE 'BigActivities.com'
END
FROM contacts;
This worked for me.
CREATE TABLE PER_CAL ( CAL_YEAR INT, CAL_PER INT )
INSERT INTO PER_CAL( CAL_YEAR, CAL_PER ) VALUES ( 20,1 ), ( 20,2 ), ( 20,3 ), ( 20,4 ), ( 20,5 ), ( 20,6 ), ( 20,7 ), ( 20,8 ), ( 20,9 ), ( 20,10 ), ( 20,11 ), ( 20,12 ),
( 99,1 ), ( 99,2 ), ( 99,3 ), ( 99,4 ), ( 99,5 ), ( 99,6 ), ( 99,7 ), ( 99,8 ), ( 99,9 ), ( 99,10 ), ( 99,11 ), ( 99,12 )
The 4 digit century is determined by the rule, if the year is 50 or more, the century is 1900, otherwise 2000.
Given two 6 digit periods that mark the start and end period, like a quarter, return the rows that fall in that range.
-- 1st quarter of 2020
SELECT * FROM PER_CAL WHERE (( CASE WHEN CAL_YEAR > 50 THEN 1900 ELSE 2000 END + CAL_YEAR ) * 100 + CAL_PER ) BETWEEN 202001 AND 202003
-- 4th quarter of 1999
SELECT * FROM PER_CAL WHERE (( CASE WHEN CAL_YEAR > 50 THEN 1900 ELSE 2000 END + CAL_YEAR ) * 100 + CAL_PER ) BETWEEN 199910 AND 199912
Try this query. Its very easy to understand:
CREATE TABLE PersonsDetail(FirstName nvarchar(20), LastName nvarchar(20), GenderID int);
GO
INSERT INTO PersonsDetail VALUES(N'Gourav', N'Bhatia', 2),
(N'Ramesh', N'Kumar', 1),
(N'Ram', N'Lal', 2),
(N'Sunil', N'Kumar', 3),
(N'Sunny', N'Sehgal', 1),
(N'Malkeet', N'Shaoul', 3),
(N'Jassy', N'Sohal', 2);
GO
SELECT FirstName, LastName, Gender =
CASE GenderID
WHEN 1 THEN 'Male'
WHEN 2 THEN 'Female'
ELSE 'Unknown'
END
FROM PersonsDetail