Docs claim that "select myTable.*" wildcard won't let you assign column names

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От Amir Rohan
Тема Docs claim that "select myTable.*" wildcard won't let you assign column names
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Msg-id trinity-f7a55438-da76-471a-8b06-b5446f01918b-1442875052542@3capp-mailcom-lxa10
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Ответы Re: Docs claim that "select myTable.*" wildcard won't let you assign column names
Список pgsql-docs
<div style="font-family: Verdana;font-size: 12.0px;"><div> </div><div>From
http://www.postgresql.org/docs/9.4/static/sql-select.html(and previous version too):</div><div><h3><tt
class="COMMAND"> ##SELECT</tt> List</h3><div>    <...></div></div><div>    Instead of an expression, <tt
class="LITERAL">*</tt>can be written in the output list as a shorthand for all the columns of the selected
rows.</div><div>   Also, you can write <tt class="LITERAL"><tt class="REPLACEABLE c2">table_name</tt>.*</tt> as a
shorthandfor the columns coming from just that table. In these cases it is not</div><div>    possible to specify new
nameswith <tt class="LITERAL">AS</tt>; the output column names will be the same as the table columns'
names.</div><div> </div><div>But, thedocs elsewhere feature a query example show the use of a wildcard for
columns</div><div>aswell as allowing you to assign names to as many of the leading columns as you wish:</div><div> 
<div><div>WITHT0 as ( SELECT 1,2,3 )<br /> SELECT T0.* from T0 as T0(foo,bar) ;</div><div> </div><div><div> foo │ bar │
?column?<br/> ─────┼─────┼──────────<br />    1 │   2 │        3<br /> (1 row)</div><div> </div><div>The following
curiousvariant also works:</div><div> </div><div>WITH T0 as ( SELECT 1,2,3 )<br /> SELECT justAnythingReally.* from T0
asjustAnythingReally(foo,bar) ;</div></div>   <div>The synoposis/grammer at the top doesn't hint at this either. I've
checkedand this has been supported since at least 9.2
.</div><div> </div><div>Regards,</div><div>Amir</div><div> </div></div></div></div>

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