How we select record in given mysql query :
kindly help me to select query with case when var1 like value1 or var2 like value2 then 'valid' else 'invalid' from xx as s
select
case
when SUBSTRING(Trim(Pan_No), 4, 1) ='C'
and (z.tds_Vendor_Type_Lookup_Code not like '%COMP%' or Vendor_Name not like '%Pvt%' or Vendor_Name not like '%Ldt%' or Vendor_Name not like '%Limited%' or Vendor_Name not like '%Private%' )
then 'InValid Pan 4th Character for a Company' end as code
from xyz as a
in this query always run else condition please guide me a valid way.
You are missing the end statement for the case, in addition you can also add else something as
select
case
when SUBSTRING(Trim(Pan_No), 4, 1) ='C'
and (
z.tds_Vendor_Type_Lookup_Code not like '%COMP%'
or Vendor_Name not like '%Pvt%'
or Vendor_Name not like '%Ldt%'
or Vendor_Name not like '%Limited%'
or Vendor_Name not like '%Private%'
)
then 'InValid Pan 4th Character for a Company'
else 'Valid' end as validity
from xyz
Related
I have a table which looks like this: http://i.stack.imgur.com/EyKt3.png
And I want a result like this:
Conditon COL
ted1 4
ted2 1
ted3 2
I.e., the count of the number of '1' only in this case.
I want to know the total no. of 1's only (check the table), neglecting the 0's. It's like if the condition is true (1) then count +1.
Also consider: what if there are many columns? I want to avoid typing expressions for every single one, like in this case ted1 to ted80.
Using proc means is the most efficient method:
proc means data=have noprint;
var ted:; *captures anything that starts with Ted;
output out=want sum =;
run;
proc print data=want;
run;
Try this
select
sum(case when ted1=1 then 1 else 0 end) as ted1,
sum(case when ted2=1 then 1 else 0 end) as ted2,
sum(case when ted3=1 then 1 else 0 end) as ted3
from table
In PostgreSQL (tested with version 9.4) you could unpivot with a VALUES expression in a LATERAL subquery. You'll need dynamic SQL.
This works for any table with any number of columns matching any pattern as long as selected columns are all numeric or all boolean. Only the value 1 (true) is counted.
Create this function once:
CREATE OR REPLACE FUNCTION f_tagcount(_tbl regclass, col_pattern text)
RETURNS TABLE (tag text, tag_ct bigint)
LANGUAGE plpgsql AS
$func$
BEGIN
RETURN QUERY EXECUTE (
SELECT
'SELECT l.tag, count(l.val::int = 1 OR NULL)
FROM ' || _tbl || ', LATERAL (VALUES '
|| string_agg( format('(%1$L, %1$I)', attname), ', ')
|| ') l(tag, val)
GROUP BY 1
ORDER BY 1'
FROM pg_catalog.pg_attribute
WHERE attrelid = _tbl
AND attname LIKE col_pattern
AND attnum > 0
AND NOT attisdropped
);
END
$func$;
Call:
SELECT * FROM f_tagcount('tbl', 'ted%');
Result:
tag | tag_ct
-----+-------
ted1 | 4
ted2 | 1
ted3 | 2
The 1st argument is a valid table name, possibly schema-qualified. Defense against SQL-injection is built into the data type regclass.
The 2nd argument is a LIKE pattern for the column names. Hence the wildcard %.
db<>fiddle here
Old sqlfiddle
Related:
Select columns with particular column names in PostgreSQL
SELECT DISTINCT on multiple columns
I have a sybase query that is structured like this:
SELECT
case
when isnull(a,'') <> '' then a
else convert(varchar(20), b)
end
FROM table_name
WHERE b=123
It used to return the results of the 'case' in a column named 'converted'. It now returns the results of the 'case' in a column with an empty string name ''.
How could this be? Could there be some database configuration that defaults the results of a 'case' with no name?
(I've fixed the broken query by adding " as computed" after 'end' but now I'd like to know how it used to return as 'computed' before I added the fix?)
Is this what you want?
SELECT (case when isnull(a, '') <> '' then a
else convert(varchar(20), b)
end) as converted
-------------^
FROM table_name
WHERE b = 123;
By the way, you could write the select more succinctly as:
SELECT coalesce(nullif(a, ''), b) as converted
Reorder rows
A row in my database it in a random order with the following characters
HFMNLBX#&I
It was input weirdly and the rows are like HF and FH, which are both equivalent to the system. Is there a way to update all of the rows to go in alphabetical order, then the characters on the end?
Thanks
Here is a way to alphabetize the characters in a column:
select concat((case when col like '%A%' then 'A' else '' end),
(case when col like '%B%' then 'B' else '' end),
. . .
(case when col like '%Z%' then 'Z' else '' end)
) as newcol
from t
Note that this does not handle duplicate letters.
I'm not sure exactly what you mean by "characters on the end". You can use a subquery, for instance, to handle just a subset of them.
Or, if you want to keep everything after the #, something like:
select concat((case when col like '%A%#%' then 'A' else '' end),
(case when col like '%B%#%' then 'B' else '' end),
. . .
(case when col like '%Z%#%' then 'Z' else '' end),
substring(col, locate('#', col) - 1)
) as newcol
from t
I have a simple JPQL query. (But this applies also to an sql query..)
FROM DomainObj d where d.field1 like 'TEST%' and d.field2 like '%';
If the DB contains the following row:
1) field1 -> 'TEST'; field2 -> null
the query return nothing!
If the DB contains the following values:
2) filed1 -> 'TEST'; field2 -> ''
the query return the row!
How can I include also null values while searching for like '%' keeping the query as simple as possible (avoiding and/or clause?)
I'm implementing searching funcionality of an entity in the db.. and I also search by many fields at the same time..
Thank you
Marco
You can't directly use nulls in equality tests, because null is un-equal to everything, including itself. That's why there's the is null test, e.g:
select null = null -> null
select null <> null -> null
select 1 = null -> null
select 1 <> null -> null
select 1 + null -> null
essentially null is contagious, and will nullify anything it's compared to, or added in to.
So yes, you'll have to do
SELECT ... WHERE somefield LIKE '%...%' or somefield IS NULL
Try this:
...
and IFNULL(d.field2, '') like '%'
...
where ...
and (field2 = '' or field2 is null)
Note that the condition field2 like '%' is nonsensical because it matches any text except null. If you added or field2 is mull to it you would match everything, so logically you should just remove the condition on field2
Use IS NULL:
where d.field1 like 'TEST%' OR d.field2 IS NULL;
FROM DomainObj d where (d.field1 like 'TEST%' or d.field1 IS NULL) and (d.field2 like '%' or d.field2 IS NULL)
I wanna display multiple statements when a single condition is true in case..when statement in SQL.
Eg:
case when (condition is true) then
print "A"
print "B"
.
.
.
.
print "Z"
when (condition2 is true) then
print "Z"
print "Y"
.
.
.
.
print "A
end
Could anyone provide me the exact syntax for it please?
Thanks in advance.
If your condition is complex, you can move it to a subquery. That way you don't have to repeat it for each column:
select case when Condition = 1 then 'A' else 'B' end
, case when Condition = 1 then 'C' else 'D' end
, case when Condition = 1 then 'E' else 'F' end
, ...
from (
select *
, case
when ... complex condition ... then 1
else 0
end as Condition
from YourTable
) as SubQueryAlias
Another option is a union with a CTE (not available in all databases.) That allows you to write the expressions for both without case, and thanks to the CTE the condition is not repeated.
; with CteAlias as
(
select *
, case
when ... complex condition ... then 1
else 0
end as Condition
from YourTable
)
select 'A', 'C', 'E'
from CteAlias
where Condition = 1
union all
select 'B', 'D', 'F'
from CteAlias
where Condition = 0