I'm trying to create a sql query, but there is this error:
Ambiguous column name 'description'.
Its because this column occurs in both tables.
if I remove the description from the query, it works.
I tried to rename the description-field "AS description_pointer", but the error still occurs.
SELECT TOP 1000 [activityid]
,[activitytypecodename]
,[subject]
,[regardingobjectid]
,[contactid]
,[new_crmid]
,[description] AS description_pointer
FROM [crmtestext_MSCRM].[dbo].[FilteredActivityPointer] as I
Left JOIN [crmtestext_MSCRM].[dbo].[FilteredContact]
ON I.[regardingobjectid] = [crmtestext_MSCRM].[dbo].[FilteredContact].[contactid]
WHERE new_crmid not like '%Null%' AND activitytypecodename like '%E-mail%'
Both tables coming into play in the query have a column named description. You RDBMS cannot guess which column table you actually want.
You need to prefix the column name with the table name (or table alias) to disambiguate it.
Bottom line, it is a good practice to always prefix column names with table names or aliases as soon as several tables come into play in a query. This avoids the issue that you are seeing here and make the queries easier to understand for the poor souls that have no knowledge of the underlying schema.
Here is an updated version of your query with table aliases and column prefixes. Obviously you need to review each column to put the correct alias:
SELECT TOP 1000
i.[activityid]
,i.[activitytypecodename]
,i.[subject]
,c.[regardingobjectid]
,c.[contactid]
,c.[new_crmid]
,c.[description] AS description_pointer
FROM [crmtestext_MSCRM].[dbo].[FilteredActivityPointer] as i
Left JOIN [crmtestext_MSCRM].[dbo].[FilteredContact] as c
ON i.[regardingobjectid] = c.[contactid]
WHERE i.new_crmid not like '%Null%' AND i.activitytypecodename like '%E-mail%'
Related
I have a table that has just a code for the individual column name like "A1G", "Z8H" etc.
This table is a really huge table. Therefore it would not help to manually add the alias name in the SELECT Statement like.
The description for each column code is stored in a different table:
Now I would like to SELECT * from the first table but with the right column header name.
This is stored in the second table within the filters Schema = 'ABC' and Table = 'A'.
That would be desired output:
How would you do that in SQL?
How can I change the column name?
You would be better off just creating a view with all the columns aliased to your preferred names. Once that's done you can select from the view and get the data back with the headings you want.
Look into Inner Join
Or Left Join.
I'm trying to make a join to a date table on a column called 'date'.
The issue I have is that the column name is the same as the table and it seems to be making a referencing to the table rather than the column (hence the yellow highlighting). I've found a workaround which is to rename the table - though does anyone know how to explicitly reference the column in the join rather than the table if they have the same name?
You can give aliases to the table/column and use that instead. Otherwise, you can use the table name before the column with a . as a separator, i.e., TableName.date = date.
I have 3 temp tables , using 2 temp tables i will join and create a new temp table using "into" command. In the two parent tables i have a column named abc but when i use the same in the join condition i get an error mentioning invalid column name.
Invalid column name 'abc'.
can anyone help with the issue
Perhaps you need to be more specific about which column you mean, since both tables have a column with the same name. Aliases may make this more convenient.
INSERT #mytemptableC (x, y, z)
select a.q, a.p, b.r
from #mytemptableA a inner join #mytemptableB b on a.q=b.q
Also, if your abc column has a complex name with symbols or spaces, such as col #1, you may need to enclose it in square braces [col #1].
Without seeing the existing code, though, it is difficult to guess. Please reply with your existing SQL statement and I'm sure the answer will be provided very quickly.
I want to append new rows to a table-1 d:\dl based on the equality constraint lower(rdl.subdir) = lower(tr.n1), where rdl and tr would be prospective aliases for f:\rdl and f:\tr tables respectively.
I get a function name is missing ). message when running the following command in VFP9:
INSERT INTO d:\dl SELECT * FROM f:\rdl WHERE (select LOWER(subdir)FROM f:\rdl in (select LOWER(n1) FROM f:\tr))
I am using the in syntax, instead of the alias based equality statement lower(rdl.subdir) = lower(tr.n1) because I do not know where to define aliases within this command.
In general, the best way to get something like this working is to first make the query work and give you the results you want, and then use it in INSERT.
In general, in SQL commands you assign aliases by putting them after the table name, with or without the keyword AS. In this case, you don't need aliases because the ones you want are the same as the table names and that's the default.
If what you're showing is your exact code and you're running it in VFP, the first problem is that you're missing the continuation character between lines.
You're definitely doing too much work, too. Try this:
INSERT INTO d:\dl ;
SELECT * ;
FROM f:\rdl ;
JOIN f:\tr ;
ON LOWER(rdl.subdir) = LOWER(tr.n1)
I want to search a text in a table without knowing its attributes.
Example : I have a table Customer,and i want to search a record which contains 'mohit' in any field without knowing its column name.
You are looking for Full Text Indexing
Example using the Contains
select ColumnName from TableName
Where Contains(Col1,'mohit') OR contains(col2,'mohit')
NOTE - You can convert the above Free text query into dynamic Query using the column names calculated from the sys.Columns Query
Also check below
FIX: Full-Text Search Queries with CONTAINS Clause Search Across Columns
Also you can check all Column Name From below query
Select Name From sys.Columns Where Object_Id =
(Select Object_Id from sys.Tables Where Name = 'TableName')
Double-WildCard LIKE statements will not speed up the query.
If you wanna make a full search on the table, you must surely be knowing the structure of the table. Considering the table has fields id, name, age, and address, then your SQL Query should be like:
SELECT * FROM `Customer`
WHERE `id` LIKE '%mohit%'
OR `name` LIKE '%mohit%'
OR `age` LIKE '%mohit%'
OR `address` LIKE '%mohit%';
Mohit, I'm glad you devised the solution by yourself.
Anyway, whenever you again face an unknown table or database, I think it will be very welcome the code snippet I just posted here.
Ah, one more thing: the answers given did not addressed your problem, did they?