This question already has answers here:
How to exclude a column from SELECT query?
(6 answers)
Closed 9 years ago.
I have 20 column in one table, i want to 18 column and remove 2 column,
mysql query is
SELECT col1,col2,col3,..........,col18 from page;
this query is correct, but 18 column is so larger to written, if any query present just remove 2 column???
SQL does not support a syntax to specify columns to exclude. You must do with it and continue to write explicitly all the columns you want to select. You can also SELECT * but it is often considered bad practices.
Related
This question already has answers here:
How do I alter the position of a column in a PostgreSQL database table?
(10 answers)
Change column order in table of postgres
(1 answer)
How to change the position of column in postgresql without dumping
(1 answer)
Closed 2 years ago.
When a new column is added to a current table, this appears in the last column. eg:
added AGE columns to Students table
SELECT * FROM Students; "would show the AGE column right at the end.
Question: is it possible to change the order of these columns when such commands are executed?
If you have an existing table, you could create a VIEW with the columns reorganized, then of course, you could also type out the columns. You could also create a new table.
This question already has answers here:
SQL Server dynamic PIVOT query?
(9 answers)
SQL dynamic unpivot table as function
(1 answer)
Closed 2 years ago.
I have table:
I want use UNPIVOT to create table, where CategoryNames rows are columns names.
So, now I can just write this as
SELECT Year, Seafood, Meat/Poultry, [...]
FROM [...] UNPIVOT(...) AS Example
but I don't want write every row manually as column name, so is any option to use
SELECT CategoryName
FROM Pods
query result to create them automatically.
For this example its only 8 row, but with bigger count this could be very helpful.
This question already has answers here:
Search All Fields In All Tables For A Specific Value (Oracle)
(17 answers)
Closed 5 years ago.
I want to be able to search through entire table without specifying each column. I want to be able to look for a record where each column may look LIKE '%QASHQAI%'. This table has about 100 different columns. Naming all of them like
SELECT * FROM vehicle WHERE ... LIKE '%QASHQAI%' OR ... LIKE '%QASHQAI%' OR ... LIKE '%QASHQAI%';
Is there a quicker way of searching through the table?
i think it s not possible with a simple query but you can solve this with a stored procedure.
see my comments here
This question already has answers here:
Exclude a column using SELECT * [except columnA] FROM tableA?
(47 answers)
Closed 5 years ago.
I was reading SQL queries and got stuck with a doubt. Is there any SQL query to exclude a single column while using select statement?
For example, I have a table which contains data about student (s_name, address, email_id, ..... many more).
I want to select all the columns except email_id.
I don't think there is a way to do it directly in a Select statement. But you can use this alternative:
How to select all the columns of a table except one column?
This question already has answers here:
Randomly Select a Row with SQL in Access
(4 answers)
Closed 7 years ago.
I'm trying to make a Query from my Table "Questions", this table has the following fields: id(auto number), Question(text) ; Category(text), difficulty (number)
The query I'm trying to make must return one random row for every difficulty (1-5), for a given Category.
In SQL you can do something like this:
SELECT TOP 1 * FROM Questions ORDER BY NEWID()