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π LOC, DEPTNO(DEPT) – πDEPTNO (σLOC-‘DALLAS’(DEPT))
The schemata of the left and right arguments of operator – (set difference) do not match: {LOC, DEPTNO} ≠ {DEPTNO}.
As is, this relational algebra query could not be evaluated.
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I need to convert "2022-04-29T07:20:32.727Z" to "2022-04-29 07:20:32".
I am quite new to SQL and haven't found the solution.
You can use cast()
select cast('2022-04-29T07:20:32.727Z' as datetime)
Output
2022-04-29 07:20:32.727
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I want to find if the difference between 2 columns. How do I achieve that?
For example,
select(col1-col2) output is 1
select(col2-col1) output is -1
Is there a way to get just the difference as 1 without the negative (-) sign?
use abs() function
select abs(col2-col1) as diff
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now im investigating SQL Query for making Datawarehouse.
I found this query on it :
MAX(dbo.GetAliasesByWo(b_1.wo_part, b_1.wo__dec01, RTRIM(LTRIM(b_1.wo__chr01)), RIGHT(RTRIM(LTRIM(b_1.wo_rmks)), 1))) AS list_wo,
MAX(dbo.GetAliasesByWo1(b_1.wo_part, b_1.wo__dec01, RTRIM(LTRIM(b_1.wo__chr01)), RIGHT(RTRIM(LTRIM(b_1.wo_rmks)), 1))) AS list_wo1,
MAX(dbo.GetAliasesByWo2(b_1.wo_part, b_1.wo__dec01, RTRIM(LTRIM(b_1.wo__chr01)), RIGHT(RTRIM(LTRIM(b_1.wo_rmks)), 1))) AS list_wo2
did anyone knows whats the meaning ? could you explain to me ?
You can use sp_helptext command to view the definition.I think the given GetAliasesByWo is an user-defined function you can check the definititon with the below query:
EXEC [ServerName].[DatabaseName].dbo.sp_helptext 'dbo.GetAliasesByWo'
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Team,
I need a sql query or function which will create the mirror image of string.
Thanks
Rajeev
If "mirror" is reversed text use:
SELECT REVERSE('my_text') FROM dual;
EDIT:
SqlFiddleDemo
SELECT t
,REVERSE(t) AS Mirror1
,TRANSLATE(t, 'abcdefghijklmnopqrstuvwxyz',N'ɐqɔpǝɟbɥıظʞןɯuodbɹsʇnʌʍxʎz') AS Mirror2
,TRANSLATE(REVERSE(t), 'abcdefghijklmnopqrstuvwxyz',N'ɐqɔpǝɟbɥıظʞןɯuodbɹsʇnʌʍxʎz') AS Mirror3
FROM tab;
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I am using Oracle SQL developer 2012. My data looks like 'valueA-valueB'. I want to strip the content after - and populate with rest.
You can use a combination of substr and instr:
SELECT SUBSTR(my_column, 1, INSTR(my_column, '-') - 1)
FROM my_table