| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu> |
| Cc: | "Ken J(dot) Wright" <ken(at)ori-ind(dot)com>, pgsql-interfaces(at)postgresql(dot)org |
| Subject: | Re: psql comment char?? |
| Date: | 2000-07-03 19:41:56 |
| Message-ID: | 20206.962653316@sss.pgh.pa.us |
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| Lists: | pgsql-interfaces |
Thomas Lockhart <lockhart(at)alumni(dot)caltech(dot)edu> writes:
>>>> I would call those the alternate forms. The canonical (SQL) way is
>>>> -- This is a comment
>> Is this part of the SQL-92 spec?
> This is the *only* comment delimiter defined in the SQL92 spec. The "/*
> .. */" form is present in several database products since a
> block-delimited comment is very useful.
Note that SQL99 added /* ... */ comments.
We are not fully compliant with SQL99's comment specifications, since it
specifies that /* ... */ nest, which is a tad hard to implement in a
finite-state lexer :-(
regards, tom lane
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