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Update documentation on may/can/might:

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Standard English uses "may", "can", and "might" in different ways:

        may - permission, "You may borrow my rake."

        can - ability, "I can lift that log."

        might - possibility, "It might rain today."

Unfortunately, in conversational English, their use is often mixed, as
in, "You may use this variable to do X", when in fact, "can" is a better
choice.  Similarly, "It may crash" is better stated, "It might crash".

Also update two error messages mentioned in the documenation to match.
This commit is contained in:
Bruce Momjian
2007-01-31 20:56:20 +00:00
parent 67a1ae9f05
commit a134ee3379
70 changed files with 729 additions and 731 deletions
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8
doc/src/sgml/query.sgml
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@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/query.sgml,v 1.48 2006/10/21 23:12:57 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/query.sgml,v 1.49 2007/01/31 20:56:18 momjian Exp $ -->
<chapter id="tutorial-sql">
<title>The <acronym>SQL</acronym> Language</title>
@ -134,7 +134,7 @@ CREATE TABLE weather (
</para>
<para>
White space (i.e., spaces, tabs, and newlines) may be used freely
White space (i.e., spaces, tabs, and newlines) can be used freely
in SQL commands. That means you can type the command aligned
differently than above, or even all on one line. Two dashes
(<quote><literal>--</literal></quote>) introduce comments.
@ -151,7 +151,7 @@ CREATE TABLE weather (
a type for storing single precision floating-point numbers.
<type>date</type> should be self-explanatory. (Yes, the column of
type <type>date</type> is also named <literal>date</literal>.
This may be convenient or confusing &mdash; you choose.)
This might be convenient or confusing &mdash; you choose.)
</para>
<para>
@ -817,7 +817,7 @@ SELECT city, max(temp_lo)
You can update existing rows using the
<command>UPDATE</command> command.
Suppose you discover the temperature readings are
all off by 2 degrees after November 28. You may correct the
all off by 2 degrees after November 28. You can correct the
data as follows:
<programlisting>