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blue-lemon0104
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createudf.sql Executable file
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-- 登录数据库,切换postgres用户,输入创建用户自定函数语句.用下面的命令为PostgreSQL定义这些函数:
-- 创建的函数名为sahe_add(text, text, text),该函数输入两个text类型的数据,返回类型为text的计算结果.
-- 其余函数#sahe_addplain,sahe_substract,sahe_multiply,sahe_negate,smhe_multiply,smhe_multiplyplain,
-- smhe_divide,smhe_pow,smhe_inverse,以此类推.
-- $libdir的实际目录位置可以用pg_config --pkglibdir命令找到。
CREATE OR REPLACE FUNCTION sahe_add(text, text, text, text) RETURNS text
AS
'$libdir/libudf',
'sahe_add'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION sahe_addplain(text, INTEGER) RETURNS text
AS
'$libdir/libudf',
'sahe_addplain'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION sahe_substract(text, text, text, text) RETURNS text
AS
'$libdir/libudf',
'sahe_substract'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION sahe_sbustract(text, text, text, text) RETURNS text
AS
'$libdir/libudf',
'sahe_substract'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION sahe_multiply(text, INTEGER) RETURNS text
AS
'$libdir/libudf',
'sahe_multiply'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION sahe_negate(text) RETURNS text
AS
'$libdir/libudf',
'sahe_negate'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION smhe_multiply(text, text, text, text) RETURNS text
AS
'$libdir/libudf',
'smhe_multiply'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION smhe_multiplyplain(text, INTEGER) RETURNS text
AS
'$libdir/libudf',
'smhe_multiplyplain'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION smhe_divide(text, text, text, text) RETURNS text
AS
'$libdir/libudf',
'smhe_divide'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION smhe_pow(text, text, INTEGER) RETURNS text
AS
'$libdir/libudf',
'smhe_pow'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION smhe_inverse(text) RETURNS text
AS
'$libdir/libudf',
'smhe_inverse'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION udf_ore_lt(text, text, text, text) RETURNS BOOLEAN
AS
'$libdir/libudf',
'udf_ore_lt'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION udf_ore_le(text, text, text, text) RETURNS BOOLEAN
AS
'$libdir/libudf',
'udf_ore_le'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION udf_ore_gt(text, text, text, text) RETURNS BOOLEAN
IMMUTABLE
AS
'$libdir/libudf',
'udf_ore_gt'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION udf_ore_ge(text, text, text, text) RETURNS BOOLEAN
AS
'$libdir/libudf',
'udf_ore_ge'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION udf_ore_ee(text, text, text, text) RETURNS BOOLEAN
AS
'$libdir/libudf',
'udf_ore_ee'
COST 5000
PARALLEL SAFE
LANGUAGE C;
CREATE OR REPLACE FUNCTION udf_ore_ne(text, text, text, text) RETURNS BOOLEAN
AS
'$libdir/libudf',
'udf_ore_ne'
COST 5000
PARALLEL SAFE
LANGUAGE C;
DROP AGGREGATE IF EXISTS sahe_sum(text, text);
DROP AGGREGATE IF EXISTS ore_max(text, text);
DROP AGGREGATE IF EXISTS ore_min(text, text);
CREATE OR REPLACE FUNCTION sum_sahe_sfunc(text, text, text) RETURNS text
AS
'$libdir/libudf',
'sum_sahe_sfunc'
COST 5000
LANGUAGE C
IMMUTABLE
STRICT;
CREATE AGGREGATE sahe_sum(text, text)
(
sfunc = sum_sahe_sfunc,
stype = text,
initcond = ''
);
CREATE OR REPLACE FUNCTION ore_max_sfunc(text, text, text) RETURNS text
AS
'$libdir/libudf',
'ore_max_sfunc'
COST 5000
PARALLEL SAFE
LANGUAGE C
IMMUTABLE
STRICT;
CREATE OR REPLACE FUNCTION ore_max_final(text) RETURNS text
AS
'$libdir/libudf',
'ore_max_final'
COST 5000
PARALLEL SAFE
LANGUAGE C
IMMUTABLE
STRICT;
CREATE AGGREGATE ore_max(text, text)
(
sfunc = ore_max_sfunc,
finalfunc = ore_max_final,
stype = text,
initcond = ''
);
CREATE OR REPLACE FUNCTION ore_min_sfunc(text, text, text) RETURNS text
AS
'$libdir/libudf',
'ore_min_sfunc'
COST 5000
PARALLEL SAFE
LANGUAGE C
IMMUTABLE
STRICT;
CREATE OR REPLACE FUNCTION ore_min_final(text) RETURNS text
AS
'$libdir/libudf',
'ore_min_final'
COST 5000
PARALLEL SAFE
LANGUAGE C
IMMUTABLE
STRICT;
CREATE AGGREGATE ore_min(text, text)
(
sfunc = ore_min_sfunc,
finalfunc = ore_min_final,
stype = text,
initcond = ''
);
CREATE TYPE ore_en;
CREATE OR REPLACE FUNCTION ore_en_in(cstring) RETURNS ore_en
AS
'$libdir/libudf'
LANGUAGE C IMMUTABLE
STRICT;
CREATE OR REPLACE FUNCTION ore_en_out(ore_en) RETURNS cstring
AS
'$libdir/libudf'
LANGUAGE C IMMUTABLE
STRICT;
/*
CREATE FUNCTION ore_en_recv(internal) RETURNS ore_en
AS '$libdir/libudf'
LANGUAGE C IMMUTABLE STRICT;
CREATE FUNCTION ore_en_send(ore_en) RETURNS bytea
AS '$libdir/libudf'
LANGUAGE C IMMUTABLE STRICT;
*/
CREATE TYPE ore_en
(
input = ore_en_in,
output = ore_en_out, --RECEIVE = ore_en_recv,
--SEND = ore_en_send,
INTERNALLENGTH = VARIABLE,
STORAGE = extended,
CATEGORY = 'S',
PREFERRED = false,
COLLATABLE = true
);
CREATE FUNCTION ore_en_abs_lt(ore_en, ore_en) RETURNS bool AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE FUNCTION ore_en_abs_le(ore_en, ore_en) RETURNS bool AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE FUNCTION ore_en_abs_gt(ore_en, ore_en) RETURNS bool AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE FUNCTION ore_en_abs_ge(ore_en, ore_en) RETURNS bool AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE FUNCTION ore_en_abs_eq(ore_en, ore_en) RETURNS bool AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE FUNCTION ore_en_abs_ne(ore_en, ore_en) RETURNS bool AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE OPERATOR < (
leftarg = ore_en, rightarg = ore_en, procedure = ore_en_abs_lt,
commutator = > , negator = >= ,
restrict = scalarltsel, join = scalarltjoinsel
);
CREATE OPERATOR <= (
leftarg = ore_en, rightarg = ore_en, procedure = ore_en_abs_le,
commutator = >= , negator = > ,
restrict = scalarltsel, join = scalarltjoinsel
);
CREATE OPERATOR = (
leftarg = ore_en, rightarg = ore_en, procedure = ore_en_abs_eq,
commutator = = ,
restrict = eqsel, join = eqjoinsel
);
CREATE OPERATOR <> (
leftarg = ore_en, rightarg = ore_en, procedure = ore_en_abs_ne,
commutator = <> ,
restrict = neqsel, join = neqjoinsel
);
CREATE OPERATOR >= (
leftarg = ore_en, rightarg = ore_en, procedure = ore_en_abs_ge,
commutator = <= , negator = < ,
restrict = scalargtsel, join = scalargtjoinsel
);
CREATE OPERATOR > (
leftarg = ore_en, rightarg = ore_en, procedure = ore_en_abs_gt,
commutator = < , negator = <= ,
restrict = scalargtsel, join = scalargtjoinsel
);
CREATE FUNCTION ore_en_abs_cmp(ore_en, ore_en) RETURNS int4
AS
'$libdir/libudf' LANGUAGE C IMMUTABLE
STRICT;
CREATE OPERATOR CLASS ore_en_abs_ops
DEFAULT FOR TYPE ore_en USING btree AS
OPERATOR 1 < ,
OPERATOR 2 <= ,
OPERATOR 3 <> ,
OPERATOR 4 >= ,
OPERATOR 5 > ,
FUNCTION 1 ore_en_abs_cmp(ore_en, ore_en);
CREATE OR REPLACE FUNCTION ore_en_min_sfunc(ore_en, ore_en, text) RETURNS ore_en
AS
'$libdir/libudf',
'ore_en_min_sfunc'
LANGUAGE C IMMUTABLE
STRICT;
CREATE OR REPLACE FUNCTION ore_en_min_final(ore_en) RETURNS ore_en
AS
'$libdir/libudf',
'ore_en_min_final'
LANGUAGE C IMMUTABLE
STRICT;
CREATE AGGREGATE ore_min(ore_en, text)
(
sfunc = ore_en_min_sfunc,
finalfunc = ore_en_min_final,
stype = ore_en,
initcond = ''
);
CREATE OR REPLACE FUNCTION ore_en_max_sfunc(ore_en, ore_en, text) RETURNS ore_en
AS
'$libdir/libudf',
'ore_en_max_sfunc'
LANGUAGE C IMMUTABLE
STRICT;
CREATE OR REPLACE FUNCTION ore_en_max_final(ore_en) RETURNS ore_en
AS
'$libdir/libudf',
'ore_en_max_final'
LANGUAGE C IMMUTABLE
STRICT;
CREATE AGGREGATE ore_max(ore_en, text)
(
sfunc = ore_en_max_sfunc,
finalfunc = ore_en_max_final,
stype = ore_en,
initcond = ''
);
UPDATE pg_aggregate
SET agginitval = NULL
WHERE aggfnoid IN (SELECT oid
FROM pg_proc
WHERE proname IN ('ore_max', 'ore_min', 'sahe_sum'));
-- 添加rotate_id列
CREATE OR REPLACE FUNCTION add_rotate_id_column()
RETURNS event_trigger AS $$
DECLARE
obj record;
BEGIN
FOR obj IN SELECT * FROM pg_event_trigger_ddl_commands() WHERE command_tag = 'CREATE TABLE' LOOP
IF obj.object_type = 'table' AND obj.schema_name NOT IN ('pg_catalog', 'information_schema') THEN
BEGIN
EXECUTE format(
'ALTER TABLE %s ADD COLUMN rotate_id SERIAL UNIQUE',
obj.object_identity
);
RAISE NOTICE 'Added rotate_id to %', obj.object_identity;
EXCEPTION
WHEN OTHERS THEN
RAISE WARNING 'Failed to add rotate_id to %: %', obj.object_identity, SQLERRM;
END;
END IF;
END LOOP;
END;
$$ LANGUAGE plpgsql;
-- DROP FUNCTION add_rotate_id_column();
-- 创建事件触发器
CREATE EVENT TRIGGER add_rotate_id_trigger
ON ddl_command_end
WHEN TAG IN ('CREATE TABLE')
EXECUTE FUNCTION add_rotate_id_column();
-- 如果需要删除触发器（测试时可能需要）
-- DROP EVENT TRIGGER IF EXISTS add_rotate_id_trigger;