Tom Lane c0f7dcdac1 Fix range-query estimation to not double-exclude NULLs, per gripe from ...

Ray Ontko 28-June-02.  Also, fix prefix_selectivity for NAME lefthand
variables (it was bogusly assuming binary compatibility), and adjust
make_greater_string() to not call pg_mbcliplen() with invalid multibyte
data (this last per bug report that I can't find at the moment, but it
was in July '02).

2002-10-19 02:56:16 +00:00

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