DESIGNER_SINGLE_RUN
评估在指定时间跨度内完成执行的所有查询，并返回可用于部署的设计。此设计包含建议用于优化评估查询的投影。除非您重定向输出，否则 DESIGNER_SINGLE_RUN 会将设计返回到 STDOUT。
这是元函数。您必须在顶级 SELECT 语句中调用元函数。
行为类型
易变语法
DESIGNER_SINGLE_RUN ('interval')
- interval
- 指定元函数调用之前的时间间隔。Database Designer 评估在指定时间间隔内运行完成的所有查询。
特权
超级用户或 DBUSER
示例
-----------------------------------------------------------------------
-- SSBM dataset test
-----------------------------------------------------------------------
-- create ssbm schema
\! $TARGET/bin/vsql -f 'sql/SSBM/SSBM_schema.sql' > /dev/null 2>&1
\! $TARGET/bin/vsql -f 'sql/SSBM/SSBM_constraints.sql' > /dev/null 2>&1
\! $TARGET/bin/vsql -f 'sql/SSBM/SSBM_funcdeps.sql' > /dev/null 2>&1
-- run these queries
\! $TARGET/bin/vsql -f 'sql/SSBM/SSBM_queries.sql' > /dev/null 2>&1
-- Run single API
select designer_single_run('1 minute');
...
designer_single_run
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
CREATE PROJECTION public.part_DBD_1_rep_SingleDesign /*+createtype(D)*/
(
p_partkey ENCODING AUTO,
p_name ENCODING AUTO,
p_mfgr ENCODING AUTO,
p_category ENCODING AUTO,
p_brand1 ENCODING AUTO,
p_color ENCODING AUTO,
p_type ENCODING AUTO,
p_size ENCODING AUTO,
p_container ENCODING AUTO
)
AS
SELECT p_partkey,
p_name,
p_mfgr,
p_category,
p_brand1,
p_color,
p_type,
p_size,
p_container
FROM public.part
ORDER BY p_partkey
UNSEGMENTED ALL NODES;
CREATE PROJECTION public.supplier_DBD_2_rep_SingleDesign /*+createtype(D)*/
(
s_suppkey ENCODING AUTO,
s_name ENCODING AUTO,
s_address ENCODING AUTO,
s_city ENCODING AUTO,
s_nation ENCODING AUTO,
s_region ENCODING AUTO,
s_phone ENCODING AUTO
)
AS
SELECT s_suppkey,
s_name,
s_address,
s_city,
s_nation,
s_region,
s_phone
FROM public.supplier
ORDER BY s_suppkey
UNSEGMENTED ALL NODES;
CREATE PROJECTION public.customer_DBD_3_rep_SingleDesign /*+createtype(D)*/
(
c_custkey ENCODING AUTO,
c_name ENCODING AUTO,
c_address ENCODING AUTO,
c_city ENCODING AUTO,
c_nation ENCODING AUTO,
c_region ENCODING AUTO,
c_phone ENCODING AUTO,
c_mktsegment ENCODING AUTO
)
AS
SELECT c_custkey,
c_name,
c_address,
c_city,
c_nation,
c_region,
c_phone,
c_mktsegment
FROM public.customer
ORDER BY c_custkey
UNSEGMENTED ALL NODES;
CREATE PROJECTION public.dwdate_DBD_4_rep_SingleDesign /*+createtype(D)*/
(
d_datekey ENCODING AUTO,
d_date ENCODING AUTO,
d_dayofweek ENCODING AUTO,
d_month ENCODING AUTO,
d_year ENCODING AUTO,
d_yearmonthnum ENCODING AUTO,
d_yearmonth ENCODING AUTO,
d_daynuminweek ENCODING AUTO,
d_daynuminmonth ENCODING AUTO,
d_daynuminyear ENCODING AUTO,
d_monthnuminyear ENCODING AUTO,
d_weeknuminyear ENCODING AUTO,
d_sellingseason ENCODING AUTO,
d_lastdayinweekfl ENCODING AUTO,
d_lastdayinmonthfl ENCODING AUTO,
d_holidayfl ENCODING AUTO,
d_weekdayfl ENCODING AUTO
)
AS
SELECT d_datekey,
d_date,
d_dayofweek,
d_month,
d_year,
d_yearmonthnum,
d_yearmonth,
d_daynuminweek,
d_daynuminmonth,
d_daynuminyear,
d_monthnuminyear,
d_weeknuminyear,
d_sellingseason,
d_lastdayinweekfl,
d_lastdayinmonthfl,
d_holidayfl,
d_weekdayfl
FROM public.dwdate
ORDER BY d_datekey
UNSEGMENTED ALL NODES;
CREATE PROJECTION public.lineorder_DBD_5_rep_SingleDesign /*+createtype(D)*/
(
lo_orderkey ENCODING AUTO,
lo_linenumber ENCODING AUTO,
lo_custkey ENCODING AUTO,
lo_partkey ENCODING AUTO,
lo_suppkey ENCODING AUTO,
lo_orderdate ENCODING AUTO,
lo_orderpriority ENCODING AUTO,
lo_shippriority ENCODING AUTO,
lo_quantity ENCODING AUTO,
lo_extendedprice ENCODING AUTO,
lo_ordertotalprice ENCODING AUTO,
lo_discount ENCODING AUTO,
lo_revenue ENCODING AUTO,
lo_supplycost ENCODING AUTO,
lo_tax ENCODING AUTO,
lo_commitdate ENCODING AUTO,
lo_shipmode ENCODING AUTO
)
AS
SELECT lo_orderkey,
lo_linenumber,
lo_custkey,
lo_partkey,
lo_suppkey,
lo_orderdate,
lo_orderpriority,
lo_shippriority,
lo_quantity,
lo_extendedprice,
lo_ordertotalprice,
lo_discount,
lo_revenue,
lo_supplycost,
lo_tax,
lo_commitdate,
lo_shipmode
FROM public.lineorder
ORDER BY lo_suppkey
UNSEGMENTED ALL NODES;
(1 row)