I think this is a quite interesting question so I googled a little bit and came across an interesting article on postgresonline. You could create a function that does something like that.Caretaker jobs for couples in italy
Such topics were also discussed on the mailing lists, but the overall consensus was pretty much the same: query the schema. I'm sure that there are other solutions but I think they will all involve some kind of magic schema-queriying-foo.Units and dimensions neet questions pdf
The real answer is that you just can not practically. This has been a requested feature for decades and the developers refuse to implement it. The popular answer suggesting querying the schema tables will not be able to run efficiently because the Postgres optimizer considers dynamic functions a black box see the test case below.
That means that indexes will not be used and joins will not be done intelligently. You would be much better off with some sort of macro system like m4.
At least it will not confuse the optimizer but it may still confuse you. Without forking the code and writing the feature yourself or using a programming language interface you are stuck. I wrote a simple proof of concept below showing how bad performance would be with a very simple dynamic execution in plpgsql. Notice also, that below I have to coerce a function returning a generic record into a specific row type and enumerate the columns.
So this method will not work for 'select all but' unless you want to remake this function for all your tables. As you can see the function call scanned the whole table while the direct query used the index These kinds of functions would tank any kind of complicated query that needed to use indexes or join tables in the right order.Select All Cells with a Specific Value - Excel Trick
It actually is somewhat possible with PostgreSQL starting with 9. While you get json instead of individual columns, it was exactly what I wanted. Perhaps json can be expanded back into individual columns. The only way you can don't say you should do that is by using dynamic sql statements.
It's easy like DrColossos wrote to query the system views and find the structure of the table and build proper statements. In a comment you explain that your motive is to have the convenience of not displaying the contents of columns with long content, rather than not displaying the column itself:. I don't want to specify all the columns, because there might be some dozens. This is possible, with the aid of a helper function which replaces the long content with null any text column in my example, but you would modify that for the types you want to suppress :.
Dynamically as stated above is the only answer but I won't recommend it. What if you add more columns in the long run but they are not necessarily required for that query? It's possible but I still recommend writing every needed column for every select written even if nearly every column is required. If your goal is to remove clutter from the screen during debugging by not displaying columns with large data values, then you can use the following trick:.
For a table "test" with col1,col2,col3, you can set the value of "col2" to null before displaying:.If you've got a moment, please tell us what we did right so we can do more of it. Thanks for letting us know this page needs work. We're sorry we let you down. If you've got a moment, please tell us how we can make the documentation better. For example, if you want to know which users of a website are both buyers and sellers but their user names are stored in separate columns or tables, you can find the intersection of these two types of users.
If you want to know which website users are buyers but not sellers, you can use the EXCEPT operator to find the difference between the two lists of users. The two expressions must contain the same number of output columns with compatible data types; otherwise, the two result sets can't be compared and merged.
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Set operations don't allow implicit conversion between different categories of data types; for more information, see Type Compatibility and Conversion. For example, the following query structure is valid, assuming that the tables T1, T2, and T3 contain compatible sets of columns:. Set operation that returns rows from two query expressions, regardless of whether the rows derive from one or both expressions.
Set operation that returns rows that derive from two query expressions. Rows that aren't returned by both expressions are discarded. Set operation that returns rows that derive from one of two query expressions. To qualify for the result, rows must exist in the first result table but not the second. The default behavior when the ALL keyword isn't used is to discard these duplicates.
If parentheses aren't specified to influence the order of precedence, a combination of these set operators is evaluated from left to right. For example, the following query evaluates the intersection of T2 and T3, then union the result with T By adding parentheses, you can enforce a different order of evaluation.
In the following case, the result of the union of T1 and T2 is intersected with T3, and the query is likely to produce a different result.
The column names returned in the result of a set operation query are the column names or aliases from the tables in the first query expression. Because these column names are potentially misleading, in that the values in the column derive from tables on either side of the set operator, you might want to provide meaningful aliases for the result set.
For example, the following query returns an error:. When set operator queries return decimal results, the corresponding result columns are promoted to return the same precision and scale. For example, in the following query, where T1. The scale is 4 because that is the maximum scale of the two columns. The precision is 12 because T1. For bit values, the maximum result precision is 19 and the maximum result scale is For bit values, the maximum result precision is 38 and the maximum result scale is If the resulting data type exceeds Amazon Redshift precision and scale limits, the query returns an error.
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This discussion is archived. Hi, I need a query which resembles the below mentioned query where there are 75 cols in the table mentioned in the table and only 74 cols are required in the output. I have the same question Show 0 Likes 0. This content has been marked as final.
Show 18 replies. What's the question? Hi, I need a query other than the one posted to select all the columns but one. Regards, Ankit. Hi, the count of rows in the table is very high.
But this sort of thing is appropriate for the database layer: normally it's the application's function which columns to display. Best regards, Nikolay. What's wrong with just writing the query with the required columns? Copy and paste can do wonders :. Wether it could be possible to write down a dynamic sql, how you will know dynamically which column to exclude? The the fastest way is to rewrite these columns name down instead of asking and waiting for such big effort, unusable and probably buggy solution.
Your statement that you fear constant changes in the structure of the table indicates a lack of management and change control and possibly an abysmally designed core application. I leave the details as an exercise to the student. What change are you talking about?
If you refuse to change the application code and think the "dynamic" way will facilite the work, then that's wrong. You will rather go on the dark side of the application code design and go in front of many many problems.
Another solution will be creating a view from the table which includes all columns except the one you do not need. Then use the view to query the table. Regards, Thierry. Something like this? Regards Girish Sharma. Go to original post.If you have a long list with a header in your worksheet, and you want to select the entire column but the header, you can select them by dragging mouse, but this method is too troublesome when the list is very long.
Here I have some tricks for you to quickly select the entire column except header or the first row in Excel. Select entire column excluding blank cells except header with shortcut. Select entire column including blank cells except header with define name.
Select entire column including blank cells except header with VBA. Select entire column including or excluding blank cells except header with Kutools for Excel. If your list does not contain any blank cells, you can use the shortcut to select entire column but the first row. Note : If there are blank cells in your list, it will select the list until the first blank cell appears with this method. If the list contains blank cells, with the shortcut cannot solve the selecting, now you can define a name for the column that you can select it except the first row in Excel.
See screenshot:. Then select the name you have defined in above step from the Name Boxyou can see the entire column but the first row has been selected. Click Run button, then the column which selected cell in is selected except the first row. Tip : The VBA macro will select from the second cell to the last cell with content in the column you activated in Step 1. The above methods may a little troublesome for you, but using the Select Range Helper feature of Kutools for Excel will be easy for you to select entire column including or excluding blank cells except first cell.
If you want to select enrire column except first cell which including blank cells, do as below:. In the Select Ranger Helper dialog, check Deselect Cellsthen select the header of the selected column, and click Close to close the dialog.
If you want to select entire column except first cell and also excluding blank cells, do as these:. Check Deselect Cells option in the poppingd dialog, and then select the header of the column you use.
Now the entire column cells except headers and blank cells are selected. Log in.3rd super robot wars z conquista il giappone
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Your username will be emailed to the email address on file. Select entire column excluding blank cells except header with shortcut Select entire column including blank cells except header with define name Select entire column including blank cells except header with VBA Select entire column including or excluding blank cells except header with Kutools for Excel Office Tab Enable Tabbed Editing and Browsing in Office, and Make Your Work Much Easier Read More Free Download Go to Download Free Trial 60 days.
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Just replace xIndex with xColIndex. Shall work fine then.Is there any way to select all columns except one column from the table. Like Exclude or except one column. Drop the column which is not required from the Temporary Table and perform a select. I am not sure where emp comes in.
It is a really bad idea from a development standpoint - what happens if the table definition changes? All kinds of things could break. If you are concerned about exposing that single column for whatever reason, you can always create a view that excludes the specified column and expose the view to your users.
Might want to try to look into column masking. Am I missing something? Why can't you just explicitly select the columns that you want to display? This would be okay for a table with few columns but imagine a table with like 20 column but you just wanna exclude one or few of them. Imagine the hassle. Agree with below approach. Always safe to specify columns in case of structural change in a table? Always safe to specify columns in case of structural table in a table?
If you simply want to reduce the amount of typing, and you are using SQL Developer, simply drag the table into the code window then remove the line for the field s you don't want. I never knew you could do that! I don't think its possible within a sql I don't know in what context you have raised this question, but the simple way is to create a view and grant it to the user you want.
Advantage of this one over temp table whatever name you choose to give is that you don't want to create the view again and again when the table is updated or deleted. Some name 13k Followers. Tech Sign In Page. Forgot Password? Don't have an account? Sign up. Dear Folks, Is there any way to select all columns except one column from the table.The fact of the matter is, people use it all the time because it is quicker and shorter than typing out all of the column names.
People are lazy, right? And these lazy people often would like to return all of the columns from a table except for one or two without typing them all out. So, why isn't this concept allowed? Would it make any sense? Here's my usual response: First, the answer is no, SQL does not support that. You must specify what you want. Second, if you ask me "why not?
It would be great! Should an error occur? Or should it just happily return the results, since we didn't want ColumnX anyway? Maybe it should issue a warning? I really don't know … Would we all ever be able to agree on a definitive, logical way to handle this? What should happen if you call DontExec on a stored procedure that doesn't exist?
Shorter to type? Does it make any sense? Not really. Home SQLTeam. Thanks, Denis! Production level code should explicitly list the columns to be returned. The principal reason for this is to insure against schema changes.
Otherwise specify what you want when you type the query. You can even create sql files with the queries that you use often. But I don't see a compelling reason for the except clause.Diagram based telephone wiring color code completed
Suppose I have 26 columns, each named after a letter in the alphabet. I want all but one of them. This could be important if, say, one columns is freeform text that takes up a lot of space. I could type: select a,b,c,d,e,f,g,h,i,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z But which field did I leave out?
It only takes a minute to sign up. Then I could remove the column to remove by hand. My question is just about the interactive usage of psql.
I asked the same question in on pgsql-general. It was Postgres 8. Sweet memories There is a software called SequelPro that would allow you to select the fields from a given table but its only for MySQL.
How can I troubleshoot high or full disk usage with Amazon Redshift?
Please read from the below from somewhere in the middle of the page:. There is another software called PSequel which only runs on Mac and it claims it is of type SequelPro built for Postgres:. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 4 years, 7 months ago. Active 4 years, 6 months ago. Viewed 8k times. I search for a simple way to select all columns except one in psql.
With psql I mean the interactive command line. There isn't one, sorry. Most GUI tools can do that.
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