I'm trying to convert a four-digit numerical code to a four-digit (one letter + 3 numbers) with a CASE clause in Data Studio. The four-digit numerical code is being pulled out of a Sheets file. I keep getting an error that says "Invalid formula - Operator "=" doesn't support NUMBER = TEXT. Operator "=" supports ANY = ANY." I'm assuming the one letter is messing everything up. Any ideas of how to fix this?
Current formula:
CASE
WHEN store_identifier = '1234' THEN 'D111'
END
The error is pretty clear. The identify is a number, so drop the single quotes:
(CASE WHEN store_identifier = 1234 THEN 'D111' END)
Related
I've written the following SQL query to return all sites having "id" equal to 2.
SELECT * FROM `sites` WHERE id = '2'
And it works well. The problem is that even if I add some characters after "2" like this :
SELECT * FROM `sites` WHERE id = '2etyupp-7852-trG78'
It returns the same results as above.
How to avoid this ? that's to say return none on the second query ?
Thanks
The reason is that you are mixing types:
where id = '2'
------^ number
-----------^ string
What is a SQL engine supposed to do? Well, the standard approach is to convert the string to a number. So this is run as:
where id = 2
What happens when the string is not a number? In most databases, you get a type conversion error. However, MySQL does implicit conversion, converting the leading digits to a number. Hence, your second string just comes 2.
From this, I hope you learn not to mix data types. Compare numbers to numbers. Compare strings to strings.
I have a column that can store text but is used to store a number (I did not make the system!) someone has put a blank value in (i.e. not content but not null) and its causing error: -
Msg 8114, Level 16, State 5, Line 1
Error converting data type varchar to numeric.
I have reduced the issue down to the below: -
SELECT
T1.[FIELD_5],
ISNUMERIC(T1.[FIELD_5]),
NULLIF(T1.[FIELD_5],''),
ISNULL(NULLIF(T1.[FIELD_5],''),0),
CONVERT(DECIMAL(18,5),ISNULL(NULLIF(T1.[FIELD_5],''),0))
FROM
[MyTBL] T1
ORDER BY
ISNUMERIC(T1.[FIELD_5])
The issue data is in [FIELD_5]
I can see SQL sees a value as not numeric
I can see that NULLIF is successfully changing it to a NULL value
I can see the ISNULL is turning the NULLIF result to 0
But the CONVERT on the ISNULL result results in the error message, I would expect it to result in 0.00000
Use try_convert():
SELECT T1.[FIELD_5], ISNUMERIC(T1.[FIELD_5]), NULLIF(T1.[FIELD_5], ''),
COALESCE(NULLIF(T1.[FIELD_5], ''), 0),
TRY_CONVERT(DECIMAL(18, 5), COALESCE(NULLIF(T1.[FIELD_5], ''), 0))
FROM [MyTBL] T1
ORDER BY ISNUMERIC(T1.[FIELD_5]);
try_convert() was introduced in SQL Server 2012. If you are using an earlier version, then you need to use a case expression.
(I switched ISNULL() to COALESCE() because I prefer to use ANSI standard functions where practical.)
There is some non numeric value available you can do that check with case as below:
select convert(decimal(18,5), '')
Throws error as "Error converting data type varchar to numeric.
"
SELECT
T1.[FIELD_5],
ISNUMERIC(T1.[FIELD_5]),
NULLIF(T1.[FIELD_5],''),
ISNULL(NULLIF(T1.[FIELD_5],''),0),
CONVERT(DECIMAL(18,5), iif(isnumeric(ISNULL(T1.[FIELD_5]),'0') > 1,T1.[FIELD_5],'0')
ISNULL(NULLIF(T1.[FIELD_5],''),0))
FROM
[MyTBL] T1
ORDER BY
ISNUMERIC(T1.[FIELD_5])
This was a case of better investigation was needed, I should have realised as in my opinion SQL doesn't lie its normally always user error.
I run it again without the order by clause and then selected the row that would have shown up after the last row that did show up (i.e. that row that caused the error).
[FIELD_5] contained the value 1E-07, an infamous bad import from Excel!
What doesn't add up is why when I had the order by ISNUMERIC on, I did not see this value at the top of the list, only the blank values that were indeed being managed properly.
Question solved, I should have stuck investigating but I think this is worth leaving up to help other investigate in the future.
SQL0802 Data conversion or data mapping error
The fields not being CAST are decimals. The fields I am trying to CAST are strings.
I have tried different variations or CAST and CONVERT on this case expression. I'm fairly certain this syntax is correct. I am still getting the error though.
CASE WHEN cpssn=amssn THEN amfnam||amlnam
WHEN cpssn=CAST(maassn as DECIMAL(9)) THEN maafnm||maalnm
WHEN cpssn=CAST(mpssno as DECIMAL(9)) THEN mppfnm||mpplnm
END as Name
One brute force method uses translate():
(CASE WHEN cpssn = amssn THEN amfnam||amlnam
WHEN length(translate(massn, 'a0123456789', 'a')) > 0 THEN NULL
WHEN length(translate(mpssno, 'a0123456789', 'a')) > 0 THEN NULL
WHEN cpssn = CAST(maassn as DECIMAL(9)) THEN maafnm||maalnm
WHEN cpssn = CAST(mpssno as DECIMAL(9)) THEN mppfnm||mpplnm
END) as Name
Note: I am not intimately familiar with translate() in DB2. The above uses an Oracle convention for removing characters, because the third argument cannot be '' in Oracle. It should still work in DB2.
This should work by first guaranteeing that the only characters in the strings are digits. case is processed in sequential order, so the digit checks should be done before the conversion.
All,
I'm writing a query that includes a CASE statement which compares two datetime fields. If Date B is > Date A, then I'd like the query to display Date B. However, if Date B is not > Date A, then the user who will be getting the report created by the query wants the column to be blank (in other words, not contain the word 'NULL', not contain a hyphen, not contain a low values date). I've been researching this today but have not come up with a viable solution so thought I'd ask here. This is what I have currently:
CASE
WHEN B.DTE_LNP_LAST > A.DTE_PROC_ACT
THEN B.DTE_LNP_LAST
ELSE ?
END AS "DATE OF DISCONNECT"
If I put NULL where the ? is, then I get a hyphen (-) in my query result. If I omit the Else statement, I also get a hyphen in the query result. ' ' doesn't work at all. Does anyone have any thoughts?
Typically the way nulls are displayed is controlled by the client software used to display query results. If you insist on doing that in SQL, you will need to convert the date to a character string:
CASE
WHEN B.DTE_LNP_LAST > A.DTE_PROC_ACT
THEN VARCHAR_FORMAT(B.DTE_LNP_LAST)
ELSE ''
END AS "DATE OF DISCONNECT"
Replace VARCHAR_FORMAT() with the formatting function available in your DB2 version on your platform, if necessary.
You can use the coalesce function
Coalesce (column, 'text')
If the first value is null, it will be replaced by the second one.
SELECT logicalTime, traceValue, unitType, entName
FROM vwSimProjAgentTrace
WHERE valueType = 10
AND agentName ='AtisMesafesi'
AND ( entName = 'Hawk-1')
AND simName IN ('TipSenaryo1_0')
AND logicalTime IN (
SELECT logicalTime
FROM vwSimProjAgentTrace
WHERE valueType = 10 AND agentName ='AtisIrtifasi'
AND ( entName = 'Hawk-1')
AND simName IN ('TipSenaryo1_0')
AND CONVERT(FLOAT , traceValue) > 123
) ORDER BY simName, logicalTime
This is my sql command and table is a view table...
each time i put "convert(float...) part " i get
Msg 8114, Level 16, State 5, Line 1
Error converting data type nvarchar to float.
this error...
One (or more) of the rows has data in the traceValue field that cannot be converted to a float.
Make sure you've used the right combination of dots and commas to signal floating point values, as well as making sure you don't have pure invalid data (text for instance) in that field.
You can try this SQL to find the invalid rows, but there might be cases it won't handle:
SELECT * FROM vwSimProjAgentTrace WHERE NOT ISNUMERIC(traceValue)
You can find the documentation of ISNUMERIC here.
If you look in BoL (books online) at the convert command, you see that a nvarchar conversion to float is an implicit conversion. This means that only "float"-able values can be converted into a float. So, every numeric value (that is within the float range) can be converted. A non-numeric value can not be converted, which is quite logical.
Probably you have some non numeric values in your column. You might see them when you run your query without the convert. Look for something like comma vs dot. In a test scenario a comma instead of a dot gave me some problems.
For an example of isnumeric, look at this sqlfiddle