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-- Licensed to the Apache Software Foundation (ASF) under one
-- or more contributor license agreements. See the NOTICE file
-- distributed with this work for additional information
-- regarding copyright ownership. The ASF licenses this file
-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
-- with the License. You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing,
-- software distributed under the License is distributed on an
-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-- KIND, either express or implied. See the License for the
-- specific language governing permissions and limitations
-- under the License.
CREATE TYPE kll_float_sketch;
CREATE OR REPLACE FUNCTION kll_float_sketch_in(cstring) RETURNS kll_float_sketch
AS '$libdir/datasketches', 'pg_sketch_in'
LANGUAGE C STRICT IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_out(kll_float_sketch) RETURNS cstring
AS '$libdir/datasketches', 'pg_sketch_out'
LANGUAGE C STRICT IMMUTABLE;
CREATE TYPE kll_float_sketch (
INPUT = kll_float_sketch_in,
OUTPUT = kll_float_sketch_out,
STORAGE = EXTERNAL
);
CREATE CAST (bytea as kll_float_sketch) WITHOUT FUNCTION AS ASSIGNMENT;
CREATE CAST (kll_float_sketch as bytea) WITHOUT FUNCTION AS ASSIGNMENT;
CREATE OR REPLACE FUNCTION kll_float_sketch_add_item(internal, real) RETURNS internal
AS '$libdir/datasketches', 'pg_kll_float_sketch_add_item'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_add_item(internal, real, int) RETURNS internal
AS '$libdir/datasketches', 'pg_kll_float_sketch_add_item'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_get_rank(kll_float_sketch, real) RETURNS double precision
AS '$libdir/datasketches', 'pg_kll_float_sketch_get_rank'
LANGUAGE C STRICT IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_get_quantile(kll_float_sketch, double precision) RETURNS real
AS '$libdir/datasketches', 'pg_kll_float_sketch_get_quantile'
LANGUAGE C STRICT IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_get_n(kll_float_sketch) RETURNS bigint
AS '$libdir/datasketches', 'pg_kll_float_sketch_get_n'
LANGUAGE C STRICT IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_to_string(kll_float_sketch) RETURNS TEXT
AS '$libdir/datasketches', 'pg_kll_float_sketch_to_string'
LANGUAGE C STRICT IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_merge(internal, kll_float_sketch) RETURNS internal
AS '$libdir/datasketches', 'pg_kll_float_sketch_merge'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_merge(internal, kll_float_sketch, int) RETURNS internal
AS '$libdir/datasketches', 'pg_kll_float_sketch_merge'
LANGUAGE C IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_from_internal(internal) RETURNS kll_float_sketch
AS '$libdir/datasketches', 'pg_kll_float_sketch_from_internal'
LANGUAGE C STRICT IMMUTABLE;
CREATE AGGREGATE kll_float_sketch_build(real) (
sfunc = kll_float_sketch_add_item,
stype = internal,
finalfunc = kll_float_sketch_from_internal
);
CREATE AGGREGATE kll_float_sketch_build(real, int) (
sfunc = kll_float_sketch_add_item,
stype = internal,
finalfunc = kll_float_sketch_from_internal
);
CREATE AGGREGATE kll_float_sketch_merge(kll_float_sketch) (
sfunc = kll_float_sketch_merge,
stype = internal,
finalfunc = kll_float_sketch_from_internal
);
CREATE AGGREGATE kll_float_sketch_merge(kll_float_sketch, int) (
sfunc = kll_float_sketch_merge,
stype = internal,
finalfunc = kll_float_sketch_from_internal
);
CREATE OR REPLACE FUNCTION kll_float_sketch_get_pmf(kll_float_sketch, real[]) RETURNS double precision[]
AS '$libdir/datasketches', 'pg_kll_float_sketch_get_pmf'
LANGUAGE C STRICT IMMUTABLE;
CREATE OR REPLACE FUNCTION kll_float_sketch_get_quantiles(kll_float_sketch, double precision[]) RETURNS real[]
AS '$libdir/datasketches', 'pg_kll_float_sketch_get_quantiles'
LANGUAGE C STRICT IMMUTABLE;