Re: psql: Greatly speed up "\d tablename" when not using regexes

[Kirill Reshke]

Hi


> Regex matching is obviously unnecessary when we're looking for an exact
> match. This checks for this (common) case and starts using plain
> equality in that case.

+1

> + appendPQExpBuffer(buf, "(%s OPERATOR(pg_catalog.=) ", namevar);
> + appendStringLiteralConn(buf, &namebuf.data[2], conn);
> + appendPQExpBuffer(buf, "\n        OR %s OPERATOR(pg_catalog.=) ",
> +  altnamevar);
> + appendStringLiteralConn(buf, &namebuf.data[2], conn);
> + appendPQExpBufferStr(buf, ")\n");

Do we need to force Collaction here like in other branches?
if (PQserverVersion(conn) >= 120000)
   appendPQExpBufferStr(buf, " COLLATE pg_catalog.default");