My assumption was that it would return a true if that value was numeric (within the isnumeric range) but FALSE if the ISNULL returns 'blah'. Seems like my assumption was off...
I'm using the it in the following way
case when ISNULL(ISNUMERIC(c.npinumber), 'blah') = 1
then c.NPiNUmber
else 'not valid: ' + c.NpiNumber
end as npi
Building on Dhruvesh's answer,
case
when ISNUMERIC(c.npinumber) = 1 then c.NPiNUmber
else 'not valid: ' + c.NpiNumber
end as npi
Will produce NULL anytime NpiNumber is NULL. The reason is that NULL + any string will still return NULL. The solution is to simply use the COALESCE function
case
when ISNUMERIC(c.npinumber) = 1 then c.NPiNUmber
else 'not valid: ' + COALESCE(c.NpiNumber, 'NULL VALUE')
end as npi
select ISNUMERIC(ISNULL(NULL, 'blah')),
ISNUMERIC(ISNULL(1234, 'blah')),
ISNUMERIC(ISNULL('ab', 'blah'))
Returns 0, 1, 0 - so your logic is correct.
When SQL's not behaving I like to simplify my query. Try running the query without your case statement first. If the results look right, then add additional logic.
What collation is your database? It's always a good idea to keep your column names properly cased (I'm looking at that all-lowercase column name over there...).
You don't require ISNULL. ISNUMERIC will return 1 if it's numberic or 0 if it's NULL or non-numeric.
case
when ISNUMERIC(c.NpiNumber) = 1 then c.NPiNUmber
else 'not valid: ' + c.NpiNumber
end as npi
Also as Euric Mentioned you may want to look at your all-lowercase column name.
Related
I've attempted the below query in postgres 11
CASE
WHEN planning_status::varchar in (('Application Under Consideration'::varchar,'Appeal In Progress'::varchar)) then 'this_label'
WHEN planning_status::varchar = 'Approved' and actual_completion_date is not null then 'that_label'
ELSE 'reject_label'
END
I can't get the query to run, initially getting error on mismatching operator to record type. I also attempted IN (VALUES()) method. The below works:
CASE
WHEN planning_status = 'Application Under Consideration' then 'this_label'
WHEN planning_status = 'Appeal In Progress' then 'this_label'
WHEN planning_status = 'Application Received' then 'this_label'
WHEN planning_status = 'Approved' and actual_completion_date is not null then 'that_label'
ELSE 'reject_label'
END
Is it possible to use the IN query within a CASE WHEN query with strings. The strings are categorical but not stored as such
The problem are the double parentheses:
-- this doesn't work:
SELECT CASE WHEN 1 IN ((1, 2)) THEN 'works' ELSE 'weird' END;
ERROR: operator does not exist: integer = record
LINE 1: SELECT CASE WHEN 1 IN ((1, 2)) THEN 'works' ELSE 'weird' END...
^
HINT: No operator matches the given name and argument types. You might need to add explicit type casts.
-- this works:
SELECT CASE WHEN 1 IN (1, 2) THEN 'works' ELSE 'weird' END;
case
═══════
works
(1 row)
The reason is that in the first statement, the inner parentheses are forming a composite type (record) with two elements, and PostgreSQL doesn't know how to compare that to the integer 1.
If the = version works, then this should work:
(CASE WHEN planning_status IN ('Application Under Consideration', 'Appeal In Progress', 'Application Received')
THEN 'this_label'
WHEN planning_status = 'Approved' and actual_completion_date is not null
THEN 'that_label'
ELSE 'reject_label'
END)
There should be no need for an explicit type conversion. If this doesn't work, what is the type of planning_status?
I'm using CASE expression to display "NamaAyah" or "NamaIbu" or "NamaWali", and if all of them is empty, the default value will display "ORTU-'NomorPokok' ".
But the default value not displayed, it just displays symbol "-" in my table. I think the value in ELSE statement not executed.
Postgre Version : PostgreSQL 9.4.15
This is my code
SELECT
"MahasiswaID" AS "PERSONID","NomorPokok" AS "KODE",
UPPER(CASE
WHEN "NamaAyah" <> '' THEN "NamaAyah"
WHEN "NamaIbu" <> '' THEN "NamaIbu"
WHEN "NamaWali" <> '' THEN "NamaWali"
ELSE 'ORTU'||'-'||"NomorPokok"
END) AS "NAMALENGKAP"
FROM "MasterMahasiswa" ORDER BY "KODE"
and this is the result
The expression you have can simpler be:
ELSE 'ORTU-'||"NomorPokok"
Apart from that, the only reasonable explanation for what you display is that there are literal - in one or more of your columns "NamaAyah", "NamaIbu" and "NamaWali". Did you check that?
I have a simple CASE statement where in my ELSE block numeric column I want to display as '-'.
But it gives me an error
Arithmetic overflow error converting varchar to data type numeric.
How would I do that?
I want it like this:
SELECT
CASE WHEN ChargeName = 'Premium' THEN CompanyCommissionPercentage ELSE '-' END AS CompanyCommissionPercentage
,CASE WHEN ChargeName = 'Premium' THEN RemitterCommissionPercentage ELSE '-' END AS RemitterCommissionPercentage
,CASE WHEN ChargeName = 'Premium' THEN RemitterCommission ELSE '-'END AS RemitterCommission
,CASE WHEN ChargeName = 'Premium' THEN GrossCommission ELSE '-'END AS GrossCommission
FROM #tmpAccountsPayable
`SELECT
CASE WHEN ChargeName = 'Premium' THEN CAST(CompanyCommissionPercentage as varchar(10)) ELSE CAST('-' as varchar(10)) END AS CompanyCommissionPercentage
FROM #tmpAccountsPayable`
Here's a picture of where in excel you can set formatting to a -
You may be better off passing in a zero instead of the dash and allowing excel formatting to make the 0 a - (assuming of course the output is going into excel)
Notice below in E20 the 0 value is converted to a - when accounting format (comma format) is used.
Also notice how a regular dash is left aligned while the accounting - is indented.
I have a SQL Server 2005 table which contains several columns which I need to check if they have data using
case when MyColumn <> '' then 1 else 0 END
My problem is that I need something to work on all datatypes, as the above wouldn't work on 0 values
example
case when MyColumn <> '' then 1 else 0 END
will return false if the value is 0, which I require otherwise.
I tried to trim, convert, cast, using len and datalength to no avail.
Anyone have any suggestion please?
Put check for 0 and null as well. some thing like:
case when MyColumn <> '' or MyColumn <>'0' Or MyColumn IS NOT NULL or MyColumn <>0 then 1 else 0 END
Can anyone tell me how to translate the following T-SQL statement:
SELECT fileld1 = CASE
WHEN T.option1 THEN -1
ELSE
CASE WHEN T.option2 THEN 0
ELSE 1
END
END
FROM Table1 AS T
The point is I need to validate two different options from the table for a single field in the select statement..
I have tried to do somthing with an IF statement in pl/sql, but it just doesnt work for me:
SELECT IF T.option1 THEN -1
ELSE IF T.option2 THEN 0
ELSE 1
END
FROM Table1 AS T
I am not actually sure how to write IF statement inside the SELECT statement..
And also, I need to do it INSIDE the select statement because I am constructing a view.
Use:
SELECT CASE
WHEN T.option1 = ? THEN -1
WHEN T.option2 = ? THEN 0
ELSE 1
END AS field1
FROM Table1 AS T
I can't get your original TSQL to work - I get:
Msg 4145, Level 15, State 1, Line 4
An expression of non-boolean type specified in a context where a condition is expected, near 'THEN'.
...because there's no value evaluation. If you're checking if the columns are null, you'll need to use:
SELECT CASE
WHEN T.option1 IS NULL THEN -1
WHEN T.option2 IS NULL THEN 0
ELSE 1
END AS field1
FROM Table1 AS T
...or if you need when they are not null:
SELECT CASE
WHEN T.option1 IS NOT NULL THEN -1
WHEN T.option2 IS NOT NULL THEN 0
ELSE 1
END AS field1
FROM Table1 AS T
CASE expressions shortcircuit - if the first WHEN matches, it returns the value & exits handling for that row - so the options afterwards aren't considered.
If I remember correctly, PL/SQL also supports the case. You just would have to move the column alias from "field1=" before the expression to "AS filed1" after the expression.