On 2022-02-12 20:50:57 +0100, Peter J. Holzer wrote: > On 2022-02-12 01:18:04 +0100, Andreas 'ads' Scherbaum wrote: > > On 10/02/2022 18:22, Peter J. Holzer wrote: > > > On 2022-02-09 21:14:39 -0800, Guyren Howe wrote: > > > > Examples of small things Postgres could have: > > > > > > > > • SELECT * - b.a_id from a natural join b > > > > > > My use case for such a feature are tables which contain one column (or a > > > small number of columns) which you usually don't want to select: A bytea > > > column or a very wide text column. In a program I don't mind (in fact I > > > prefer) listing all the columns explicitely, but exploring a database > > > interactively with psql typing lots of column names is tedious > > > (especially since autocomplete doesn't work here). > > > > Maybe for this specific use case it's easier to teach psql how to do that, [...] > I think the easiest way to get the columns would be to EXPLAIN(verbose) > the query. Otherwise psql (or whatever your shell is) would have to > completely parse the SQL statement to find the columns.
A shell could also provide an "expand select list" function using
explain.
In fact, you can sort of do that manually:
1) Prefix your query with explain(verbose)
2) Copy the "Output:" line of the top node.
3) Edit your query, remove the explain(verbose) and replace the select
list with the content of the clipboard
4) (optional) remove any unwanted columns
A bit cumbersome but less cumbersome than typing/copying lots of column
names from the result of a previous query or \d.
hp
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_ | Peter J. Holzer | Story must make more sense than reality.
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