extern int lf_sqlperform(const uschar *, const uschar *, const uschar *,
const uschar *, uschar **,
uschar **, uint *, int(*)(const uschar *, uschar *, uschar **,
extern int lf_sqlperform(const uschar *, const uschar *, const uschar *,
const uschar *, uschar **,
uschar **, uint *, int(*)(const uschar *, uschar *, uschar **,