How can I get a list of the column names in my table where the values for those columns are not NULL
Here is how I can get a list of the column names for the table
SELECT t.name AS table_name,
c.name AS column_name
FROM sys.tables AS t
INNER JOIN sys.columns c ON t.OBJECT_ID = c.OBJECT_ID
WHERE c.name LIKE '%tkrt%' and t.name = 'timerate'
So I get a list as such:
table_name colunm_name
timerate tkrt01
timerate tkrt02
...
timerate tkrt50
Now in the actual table based on the tkinit and the tkeffdate I get this
select * from timerate where tkinit = '0005' and tkeffdate =
(select MAX(tkeffdate) from timerate where tkinit = '0005')
tkinit tkeffdate tkrt01 tkrt02 ... tkrt22 ... tkrt50
0005 2014-01-01 00:00:00.000 440.00 NULL ... 400.00 ... NULL
so the return has some values for tkrt01, tkrt22... and some of the tkrt's are NULL
I was thinking if I use the first query to retun just a list of the colunm names (tkrt01...tkrt50) and if there is some way then to look through using another query using a variable from the loop that checks if each column and if it's null don't return it.
Basically I want a list of the column names that have values in them so my final result would be
column_name
tkrt01
tkrt22
As those are only the two columns that have values in them.
This isn't the case for everyone as I have two items to filter on being the tkinit and the tkeffdate
Each id (tkint) has a different max(tkeffdate). I have looked at doing For XML Path and For Each look but can't figure out the best way to just list the colunm names from the sys.tables join sys.columns where in the specific table (t.name) those respective columns (based on the two filters) have data in them
mysql sql
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
asked Jan 8 '14 at 20:25
user3174897user3174897
61
add a comment |
Here is how I can get a list of the column names for the table
SELECT t.name AS table_name,
c.name AS column_name
FROM sys.tables AS t
INNER JOIN sys.columns c ON t.OBJECT_ID = c.OBJECT_ID
WHERE c.name LIKE '%tkrt%' and t.name = 'timerate'
So I get a list as such:
table_name colunm_name
timerate tkrt01
timerate tkrt02
...
timerate tkrt50
Now in the actual table based on the tkinit and the tkeffdate I get this
select * from timerate where tkinit = '0005' and tkeffdate =
(select MAX(tkeffdate) from timerate where tkinit = '0005')
tkinit tkeffdate tkrt01 tkrt02 ... tkrt22 ... tkrt50
0005 2014-01-01 00:00:00.000 440.00 NULL ... 400.00 ... NULL
so the return has some values for tkrt01, tkrt22... and some of the tkrt's are NULL
I was thinking if I use the first query to retun just a list of the colunm names (tkrt01...tkrt50) and if there is some way then to look through using another query using a variable from the loop that checks if each column and if it's null don't return it.
Basically I want a list of the column names that have values in them so my final result would be
column_name
tkrt01
tkrt22
As those are only the two columns that have values in them.
This isn't the case for everyone as I have two items to filter on being the tkinit and the tkeffdate
Each id (tkint) has a different max(tkeffdate). I have looked at doing For XML Path and For Each look but can't figure out the best way to just list the colunm names from the sys.tables join sys.columns where in the specific table (t.name) those respective columns (based on the two filters) have data in them
mysql sql
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
asked Jan 8 '14 at 20:25
user3174897user3174897
61
I think this logic is best handled elsewhere.
– Marcus Adams
Jan 8 '14 at 21:56
add a comment |
Here is how I can get a list of the column names for the table
SELECT t.name AS table_name,
c.name AS column_name
FROM sys.tables AS t
INNER JOIN sys.columns c ON t.OBJECT_ID = c.OBJECT_ID
WHERE c.name LIKE '%tkrt%' and t.name = 'timerate'
So I get a list as such:
table_name colunm_name
timerate tkrt01
timerate tkrt02
...
timerate tkrt50
Now in the actual table based on the tkinit and the tkeffdate I get this
select * from timerate where tkinit = '0005' and tkeffdate =
(select MAX(tkeffdate) from timerate where tkinit = '0005')
tkinit tkeffdate tkrt01 tkrt02 ... tkrt22 ... tkrt50
0005 2014-01-01 00:00:00.000 440.00 NULL ... 400.00 ... NULL
so the return has some values for tkrt01, tkrt22... and some of the tkrt's are NULL
I was thinking if I use the first query to retun just a list of the colunm names (tkrt01...tkrt50) and if there is some way then to look through using another query using a variable from the loop that checks if each column and if it's null don't return it.
Basically I want a list of the column names that have values in them so my final result would be
column_name
tkrt01
tkrt22
As those are only the two columns that have values in them.
This isn't the case for everyone as I have two items to filter on being the tkinit and the tkeffdate
Each id (tkint) has a different max(tkeffdate). I have looked at doing For XML Path and For Each look but can't figure out the best way to just list the colunm names from the sys.tables join sys.columns where in the specific table (t.name) those respective columns (based on the two filters) have data in them
mysql sql
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
asked Jan 8 '14 at 20:25
user3174897user3174897
61
Here is how I can get a list of the column names for the table
SELECT t.name AS table_name,
c.name AS column_name
FROM sys.tables AS t
INNER JOIN sys.columns c ON t.OBJECT_ID = c.OBJECT_ID
WHERE c.name LIKE '%tkrt%' and t.name = 'timerate'
So I get a list as such:
table_name colunm_name
timerate tkrt01
timerate tkrt02
...
timerate tkrt50
Now in the actual table based on the tkinit and the tkeffdate I get this
select * from timerate where tkinit = '0005' and tkeffdate =
(select MAX(tkeffdate) from timerate where tkinit = '0005')
tkinit tkeffdate tkrt01 tkrt02 ... tkrt22 ... tkrt50
0005 2014-01-01 00:00:00.000 440.00 NULL ... 400.00 ... NULL
so the return has some values for tkrt01, tkrt22... and some of the tkrt's are NULL
I was thinking if I use the first query to retun just a list of the colunm names (tkrt01...tkrt50) and if there is some way then to look through using another query using a variable from the loop that checks if each column and if it's null don't return it.
Basically I want a list of the column names that have values in them so my final result would be
column_name
tkrt01
tkrt22
As those are only the two columns that have values in them.
This isn't the case for everyone as I have two items to filter on being the tkinit and the tkeffdate
Each id (tkint) has a different max(tkeffdate). I have looked at doing For XML Path and For Each look but can't figure out the best way to just list the colunm names from the sys.tables join sys.columns where in the specific table (t.name) those respective columns (based on the two filters) have data in them
mysql sql
mysql sql
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
asked Jan 8 '14 at 20:25
user3174897user3174897
61
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
asked Jan 8 '14 at 20:25
user3174897user3174897
61
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
edited Nov 13 '18 at 6:00
Joakim Danielson
7,9343724
7,9343724
asked Jan 8 '14 at 20:25
user3174897user3174897
61
asked Jan 8 '14 at 20:25
user3174897user3174897
61
asked Jan 8 '14 at 20:25
user3174897user3174897
61
61
I think this logic is best handled elsewhere.
– Marcus Adams
Jan 8 '14 at 21:56
add a comment |
I think this logic is best handled elsewhere.
– Marcus Adams
Jan 8 '14 at 21:56
I think this logic is best handled elsewhere.
– Marcus Adams
Jan 8 '14 at 21:56
I think this logic is best handled elsewhere.
– Marcus Adams
Jan 8 '14 at 21:56
add a comment |
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I think this logic is best handled elsewhere.
– Marcus Adams
Jan 8 '14 at 21:56