pgsql-server/src backend/optimizer/path/clause ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    02/10/18 22:56:16

Modified files:
    src/backend/optimizer/path: clausesel.c
    src/backend/utils/adt: selfuncs.c
    src/include/utils: selfuncs.h

Log message:
    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).