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Diffstat (limited to 'src/backend/utils/adt/varbit.c')
| -rw-r--r-- | src/backend/utils/adt/varbit.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/backend/utils/adt/varbit.c b/src/backend/utils/adt/varbit.c index 2235866244d..0d0c0fd9f3c 100644 --- a/src/backend/utils/adt/varbit.c +++ b/src/backend/utils/adt/varbit.c @@ -36,6 +36,7 @@ #include "libpq/pqformat.h" #include "nodes/nodeFuncs.h" #include "nodes/supportnodes.h" +#include "port/pg_bitutils.h" #include "utils/array.h" #include "utils/builtins.h" #include "utils/varbit.h" @@ -1202,6 +1203,19 @@ bit_overlay(VarBit *t1, VarBit *t2, int sp, int sl) } /* + * bit_count + * + * Returns the number of bits set in a bit string. + */ +Datum +bit_bit_count(PG_FUNCTION_ARGS) +{ + VarBit *arg = PG_GETARG_VARBIT_P(0); + + PG_RETURN_INT64(pg_popcount((char *) VARBITS(arg), VARBITBYTES(arg))); +} + +/* * bitlength, bitoctetlength * Return the length of a bit string */ |