ืืืจืืืืงืืืจืช Microservice, ืืื ืืื ืืืจ ืืขืืื ืืื, ืืฉ ืืชืจืื ืืช ืืืกืจืื ืืช. ืืืง ืืืชืืืืืื ืืืคืืื ืขื ืื ืืงืืื ืืืชืจ, ืืืจืื ืงืฉืื ืืืชืจ. ืืืืขื ืืืืจืืช ืืฉืื ืื ืืืืจืืืืช ืืืื ืืืชืจ, ืืชื ืฆืจืื ืืืงืจืื. ืืื ืืื ืืื ืืืืจืืืืช ืืืืืืช ืืืืืจืช ืฉื ืื ืืืืืงื. ืื ืืืื ืืืื ื ืืชื ืืฆืืฆื ืืช ืื ืืื ืืืืืงื ืืชืคืขืืืืช ืืฉืืืืชืืช SQL ืืขืชืง ืื ืืืื, ืื ืืืจืืืืงืืืจืช ืจืืืื ืฉืืจืืชืื ืืื ืฉืืจืืช ืืฉ ืืกื ื ืชืื ืื ืืฉืื ืื ืจืื ืฉืื ืืคืฉืจ ืืขืฉืืช ืฉืืืืชื ืืืช (ืื ืฉืืืื ืื?). ืืื ืฉืืชืขื ืืื ืืื ืคืชืจื ื ืืช ืืขืืืช ืื ืืชืื ืืชืคืขืืื ืืืืจื ืฉืื ื ืืืื ืืืื ื ืืืืืช ืขื ืืคืชืจืื ืืื - ืืจืื ืืื.
ืฉืื ืคืืื ืกืืืืืฉ, ื-DomClick ืื ื ืขืืื ืืฆืืืช ืฉืืืจืื ืขื ืชืืืืงืช ืืืกื ืื ืชืื ืื ืืื ืืืืืื. ืืืืคื ืงืื ืื ืฆืืื ืื, ื ืืชื ืืกืืื ืืช ืืคืขืืืืืืช ืฉืื ื ืืื ืืกืช ื ืชืื ืื, ืื ืืืขืฉื, ืืืืื ืืืฉืืืืช ืจืื ืืจืื ืืืชืจ. ืืฉื ื ืชืงื ETL/ELT ืืื ืืกืช ื ืชืื ืื, ืชืืืื ืืืชืืื ืฉื ืืืื ืื ืืชืื ื ืชืื ืื ืืคืืชืื ืืืื ืืฉืื. ืืืืืื ืขืืืจ ืืืืื ืชืคืขืืื ืืืืื ื "ืืืขืืื ืคื ืื" ืฉืืฉ ืื ื ืืื ืืืื ืืืชืช ืืื ืืืกืืื ืืกื ื ืชืื ืื ืืื ืฉืืืื ืืช ืื ืื ืชืื ืื ืฉืื ืฆืจืืืื.
ืืืืคื ืืืื, ืฉืงืื ื ืืคืฉืจืืืืช ืฉืื ืืช. ืืคืฉืจ ืืื ืืื ืืช ืืืืจ ืืื - ืืคืืื ื ืืกืื ื, ืืื ืืืขื ืืืืช, ืื ืืฆืืื ื ืืฉืื ืฉืื ืืืื ืชืืืคืื ืืืื ืืืืืืงื ืขื ืืชืืืื ืืืืื ืืืื ืฉื ืื ืืืช ืืืืจ ืืืืฆืืข ืฉืื ืืืื ืื (ืื ืืืฉืื ืืฆืืื , ืืชืื ืืชืืืืืช ืืื). ืืคืฉืจ ืืื ืืืืจ ืืื ืืืกืืื: "ืืืจ'ื, ืืืื ืคืืชืื ืืืื ืืืขืชืงืื ืื ืืืืืื", ืืื ืื ืืจืืฉื ื ืืกืคืช ืืืืืก, ืื ืจืื ืืื ืฉืฆืจืื ืืืืื ืข ืืื ืืืืืช ืืืคืฉืจ. ืืืืื ื ืื ืกืืช ืืืฉืชืืฉ ืืืื ืืืืืืืช FDW (Foreign Data Wrapper): ืืขืฆื, ืืืืืจ ื-dblink ืกืื ืืจืื, ืฉื ืืฆื ืืชืงื SQL, ืืื ืขื ืืืฉืง ืืฉืื ืืจืื ืืืชืจ ื ืื. ืขื ืกืื ืื ืขืฉืื ื ืคืชืจืื ืฉืืกืืคื ืฉื ืืืจ ืชืคืก ืืืกืชืืจื ื ืขืืื. ืืคืจืืื ืฉืื ืื ื ืืฉื ืฉื ืืืืจ ื ืคืจื, ืืืืื ืืืชืจ ืืืื, ืฉืื ืื ื ืจืืฆื ืืืืจ ืขื ืืจืื: ืืกื ืืจืื ืกืืืืืช ืืกื ื ืชืื ืื ืืขื ืืงืจืช ืืืฉื ืืื-ืคืจืกืื ืืืืฆืื ืฉื ื ืชืื ืื ืืืฉืืื. ืืื ืื, ืืฉ ืฆืืจื ืืืกืชืืื ืฉืคืชืจืื ืื ืืื ื ืชืืืืฃ ืืืืืจื ืืืืข ืืืืืจืื ืื ืืืืืื ืืืืชืืื, ืืื ืคืืชืจ ืจืง ืืขืื ืกืคืฆืืคืืช.
ืืจืื ืืขืืืื ื ืื ื ืจืื ืื:
ืืฉื ื ืืกื ื ืชืื ืื PostgreSQL ืฉืื ืืฉืชืืฉืื ืืืืืื ืืืืกื ืืช ื ืชืื ื ืืขืืืื ืฉืืื, ืืืื ืืฉืื, ืืขืชืงืื ืื ืืืืืื ืฉื ืื ืืฉืืจืืชืื ืืืืืจืื ืืืกื ื ืชืื ืื ืื ืืืืฆืขืืช FDW. ืื ืืืคืฉืจ ืืืชืื ืฉืืืืชื ืืืื ืืกืื ื ืชืื ืื, ืืื ืื ืืฉื ื ืื ืื: PostgreSQL, MySQL, MongoDB ืื ืืฉืื ืืืจ (ืงืืืฅ, API, ืื ืคืชืืื ืืื ืขืืืคื ืืชืืืื, ืืชื ืืืื ืืืชืื ืืฉืื). ืืืื, ืืื ื ืจืื ื ืืืจ! ืื ืื ื ื ืคืจืืื?
ืื ืืื ืืื ื ืืืจ ืื ืื ืืืจ ืืคืฉืื, ืื, ืื ืจืื, ืื ืืื ืืืืจ.
ืืฉืื ืฉืืืื ืืจืืจ ืืืฆื Postgres ืืขืื ืืงืฉืืช ืืฉืจืชืื ืืจืืืงืื. ืื ื ืจืื ืืืืื ื, ืืื ืืขืชืื ืงืจืืืืช ืื ืฉืื ืื ืฉืืื ืื ืืื: Postgres ืืืืง ืืช ืืืงืฉื ืืืืงืื ืฉืืชืืฆืขืื ืืืืคื ืขืฆืืื ืืฉืจืชืื ืืจืืืงืื, ืืืกืฃ ืืช ืื ืชืื ืื ืืืื ืืืืฆืข ืืช ืืืืฉืืืื ืืกืืคืืื ืืขืฆืื, ืื ืฉืืืืจืืช ืืืฆืืข ืืฉืืืืชื ืชืืื ืชืืืื ืืืื ื ืืื ืื ืืชืื. ืขืื ืืฉ ืืฆืืื: ืืฉืื ืชืื ืื ืืืืขืื ืืฉืจืช ืืจืืืง ืืื ืื ืืืชืจ ืืื ืืงืกืื, ืืื ืืืจ ืฉืืขืืืจ ืืืชืืื, ืืื ืจืง ืื ืื ื ืืขืฆืื ื ืืืืืื ืืขืืืจ ืืืืืขืฅ ืื. ืืขื ืื ืืืืืง ืื ื ืจืืฆื ืืืืจ ืืืชืจ ืคืืจืื.
ืฉืืืืชื ืคืฉืืื ืืชืืื ืืช ืืืชื
ืืื ืืืจืืืช ืืืฆื Postgres ืืืฆืข ืฉืืืืชืืช ืืืืื ืฉื 6 ืืืืืื ืฉืืจืืช ืืฉืจืช ืืจืืืง, ืืื ื ืกืชืื ืขื ืชืืื ืืช ืคืฉืืื.
explain analyze verbose
SELECT count(1)
FROM fdw_schema.table;
Aggregate (cost=418383.23..418383.24 rows=1 width=8) (actual time=3857.198..3857.198 rows=1 loops=1)
Output: count(1)
-> Foreign Scan on fdw_schema."table" (cost=100.00..402376.14 rows=6402838 width=0) (actual time=4.874..3256.511 rows=6406868 loops=1)
Output: "table".id, "table".is_active, "table".meta, "table".created_dt
Remote SQL: SELECT NULL FROM fdw_schema.table
Planning time: 0.986 ms
Execution time: 3857.436 ms
ืฉืืืืฉ ืืืฉืคื VERBOSE ืืืคืฉืจ ืื ื ืืจืืืช ืืช ืืฉืืืืชื ืฉืชืืฉืื ืืฉืจืช ืืืจืืืง ืืืช ืชืืฆืืืชืื ื ืงืื ืืืืฉื ืขืืืื (ืฉืืจืช RemoteSQL).
ืืืื ื ืื ืงืฆืช ืืืชืจ ืจืืืง ืื ืืกืืฃ ืืื ืืกื ื ืื ืืืงืฉืชื ื: ืืื ืขืืืจ ืืืืืื ื ืฉืื, ืืื ืืคื ืืืจืืข ืืืชื ืืืจืืื ืืืื ืืืจ jsonb.
explain analyze verbose
SELECT count(1)
FROM fdw_schema.table
WHERE is_active is True
AND created_dt BETWEEN CURRENT_DATE - INTERVAL '7 month'
AND CURRENT_DATE - INTERVAL '6 month'
AND meta->>'source' = 'test';
Aggregate (cost=577487.69..577487.70 rows=1 width=8) (actual time=27473.818..25473.819 rows=1 loops=1)
Output: count(1)
-> Foreign Scan on fdw_schema."table" (cost=100.00..577469.21 rows=7390 width=0) (actual time=31.369..25372.466 rows=1360025 loops=1)
Output: "table".id, "table".is_active, "table".meta, "table".created_dt
Filter: (("table".is_active IS TRUE) AND (("table".meta ->> 'source'::text) = 'test'::text) AND ("table".created_dt >= (('now'::cstring)::date - '7 mons'::interval)) AND ("table".created_dt <= ((('now'::cstring)::date)::timestamp with time zone - '6 mons'::interval)))
Rows Removed by Filter: 5046843
Remote SQL: SELECT created_dt, is_active, meta FROM fdw_schema.table
Planning time: 0.665 ms
Execution time: 27474.118 ms
ืืื ืืืื ื ืื ืงืืื ืฉืขืืื ืืฉืื ืื ืืืื ืืขืช ืืชืืืช ืฉืืืืชืืช. ืืืกื ื ืื ืื ืืืขืืจื ืืฉืจืช ืืืจืืืง, ืื ืฉืืืืจ ืฉืืื ืืืคืขืื ืืืชื, Postgres ืฉืืืฃ ืืช ืื 6 ืืืืืื ืืฉืืจืืช ืขื ืื ืช ืืกื ื ืืืจ ืื ืืงืืืืช (Filter row) ืืืืฆืข ืฆืืืจื. ืืืคืชื ืืืฆืืื ืืื ืืชืืืช ืฉืืืืชื ืื ืฉืืคืืืืจืื ืืืขืืจื ืืืืื ื ืืืจืืืงืช, ืืื ื ืืงืืืื ืืืฆืืจืื ืจืง ืืช ืืฉืืจืืช ืืืจืืฉืืช.
ืื ืงืฆืช ืืืืืื ื
ืขื ืฉืืืช ืืืืืื ืืื ืืื ืคืฉืื. ืืืงืฉื ืืืงืืจืืช, ืืืขืื ื ืืขื ืืืืคืขืื is. ืื ืชืืืืฃ ืืืชื ื =, ืื ื ืงืื ืืช ืืชืืฆืื ืืืื:
explain analyze verbose
SELECT count(1)
FROM fdw_schema.table
WHERE is_active = True
AND created_dt BETWEEN CURRENT_DATE - INTERVAL '7 month'
AND CURRENT_DATE - INTERVAL '6 month'
AND meta->>'source' = 'test';
Aggregate (cost=508010.14..508010.15 rows=1 width=8) (actual time=19064.314..19064.314 rows=1 loops=1)
Output: count(1)
-> Foreign Scan on fdw_schema."table" (cost=100.00..507988.44 rows=8679 width=0) (actual time=33.035..18951.278 rows=1360025 loops=1)
Output: "table".id, "table".is_active, "table".meta, "table".created_dt
Filter: ((("table".meta ->> 'source'::text) = 'test'::text) AND ("table".created_dt >= (('now'::cstring)::date - '7 mons'::interval)) AND ("table".created_dt <= ((('now'::cstring)::date)::timestamp with time zone - '6 mons'::interval)))
Rows Removed by Filter: 3567989
Remote SQL: SELECT created_dt, meta FROM fdw_schema.table WHERE (is_active)
Planning time: 0.834 ms
Execution time: 19064.534 ms
ืืคื ืฉื ืืชื ืืจืืืช, ืืืกื ื ืืก ืืฉืจืช ืืจืืืง, ืืืื ืืืืฆืืข ืืฆืืืฆื ื-27 ื-19 ืฉื ืืืช.
ืจืืื ืืฆืืื ืื ืืืคืขืื is ืฉืื ื ืืืืคืขืื = ืื ืื ืืืื ืืขืืื ืขื ืืขืจื Null. ืื ืืืืจ ืฉ ืื ื ืืื ืืฉืืืจ ืืช ืืขืจืืื False ื-Null ืืืกื ื, ืืืืื != ื ืืื ืืฉืืืจ ืจืง ืขืจืื ืฉืงืจ. ืืื, ืืขืช ืืืืคืช ืืืคืขืื ืื ืืฉ ืืืขืืืจ ืฉื ื ืชื ืืื ืขื ืืืืคืจืืืจ OR ืืืกื ื, ืืืฉื, WHERE (ืงืื != ื ืืื) OR (ืงืื ืืื ืจืืง).
ืกืืืจื ื ืืช ืืืืืืื, ืืืื ื ืืฉืื ืืืื. ืืขืช ืขืชื, ืืื ื ืืืืจ ืืช ืืืกื ื ืืืืืืื ื ืืฆืืจืชื ืืืงืืจืืช ืืื ืืฉืงืื ืืืืคื ืขืฆืืื ืืช ืืืฉืคืขื ืฉื ืฉืื ืืืื ืืืจืื.
ืืืชืืช ืืื? ืืจืฅ
ืืืืคื ืืืื, ืืขืชืื ืงืจืืืืช ืืชื ืฆืจืื ืืืชื ืกืืช ืืืฆื ืืืชืื ืืฆืืจื ื ืืื ื ืืงืฉื ืืืืืืช ืฉืจืชืื ืืจืืืงืื, ืืจืง ืื ืืืคืฉ ืืกืืจ ืืื ืื ืงืืจื. ืืขื ืืืื ืืืืข ืขื ืื ื ืืชื ืืืฆืื ืืืื ืืจื ื. ืืื, ืื ืืกืืืื ืืฆืื ื ืฉืืกื ื ืชืืจืื ืงืืืข ืืก ืืฉืจืช ืืืจืืืง ืืจืขืฉ, ืืื ืืฉืื ืื ื ืจืืฆืื ืืืืืืจ ืืช ืืชืืจืื ืืฆืืจื ืืื ืืืช, ืืืฉื, now() ืื CURRENT_DATE, ืื ืื ืงืืจื. ืืืืืื ืฉืื ื, ืืืกืคื ื ืืกื ื ืื ืฉืืขืืืื create_at ืืืืื ื ืชืื ืื ืืืืืง ืขืืืจ ืืืืฉ ืืื ืืขืืจ (ืืื CURRENT_DATE - INTERVAL '1 ืืืืฉืื' ื-CURRENT_DATE - INTERVAL '7 ืืืืฉืื'). ืื ืขืฉืื ื ืืืงืจื ืืื?
explain analyze verbose
SELECT count(1)
FROM fdw_schema.table
WHERE is_active is True
AND created_dt >= (SELECT CURRENT_DATE::timestamptz - INTERVAL '7 month')
AND created_dt <(SELECT CURRENT_DATE::timestamptz - INTERVAL '6 month')
AND meta->>'source' = 'test';
Aggregate (cost=306875.17..306875.18 rows=1 width=8) (actual time=4789.114..4789.115 rows=1 loops=1)
Output: count(1)
InitPlan 1 (returns $0)
-> Result (cost=0.00..0.02 rows=1 width=8) (actual time=0.007..0.008 rows=1 loops=1)
Output: ((('now'::cstring)::date)::timestamp with time zone - '7 mons'::interval)
InitPlan 2 (returns $1)
-> Result (cost=0.00..0.02 rows=1 width=8) (actual time=0.002..0.002 rows=1 loops=1)
Output: ((('now'::cstring)::date)::timestamp with time zone - '6 mons'::interval)
-> Foreign Scan on fdw_schema."table" (cost=100.02..306874.86 rows=105 width=0) (actual time=23.475..4681.419 rows=1360025 loops=1)
Output: "table".id, "table".is_active, "table".meta, "table".created_dt
Filter: (("table".is_active IS TRUE) AND (("table".meta ->> 'source'::text) = 'test'::text))
Rows Removed by Filter: 76934
Remote SQL: SELECT is_active, meta FROM fdw_schema.table WHERE ((created_dt >= $1::timestamp with time zone)) AND ((created_dt < $2::timestamp with time zone))
Planning time: 0.703 ms
Execution time: 4789.379 ms
ืืืจื ื ืืืชืื ื ืืืฉื ืืช ืืชืืจืื ืืฉืืืืชืช ืืืฉื ื ืืจืืฉ ืืืืขืืืจ ืืช ืืืฉืชื ื ืืืืื ืืืกื ื. ืืืจืื ืืื ื ืชื ืื ื ืชืืฆืื ืืฆืืื ืช, ืืืงืฉื ืืคืื ืืืืืจื ืืืขื ืคื 6!
ืฉืื, ืืฉืื ืืืืืืจ ืืื: ืกืื ืื ืชืื ืื ืืฉืืืืชืช ืืืฉื ื ืืืื ืืืืืช ืืื ืืื ืฉื ืืฉืื ืขืืื ืื ื ืืกื ื ืื, ืืืจืช ืืืชืื ื ืืืืื ืฉืืืืืื ืฉืืกืืืื ืฉืื ืื, ืืฉ ืฆืืจื ืงืืื ืื ืืงืื ืืช ืืืื ืืช ืื ืชืื ืื ืืืกื ื ืืืชื ืืืืคื ืืงืืื.
ืืื ื ืืืืจ ืืช ืืกื ื ืืชืืจืืืื ืืขืจืื ืืืงืืจื.
ืคืจืื ื ืื Jsonb
ืืืืคื ืืืื, ืฉืืืช ืืชืืจืืืื ืืืืืื ืืื ืืืจ ืืืืฆื ืืช ืืฉืืืืชื ืฉืื ื ืืืืื ืืกืคืงืช, ืืื ื ืืชืจ ืขืื ืกืื ื ืชืื ืื ืืื. ืืงืจื ืขื ืืกืื ืื ืืคืื, ืืืขื ืืืืช, ืขืืืื ืื ืืกืชืืื, ืืืจืืช ืฉืื ืืื ืืฉ ืืฆืืื. ืื ืื ืืฆืืื ื ืืืขืืืจ ืืช ืืืกื ื ืืืื jsonb ืฉืื ืืฉืจืช ืืืจืืืง.
explain analyze verbose
SELECT count(1)
FROM fdw_schema.table
WHERE is_active is True
AND created_dt BETWEEN CURRENT_DATE - INTERVAL '7 month'
AND CURRENT_DATE - INTERVAL '6 month'
AND meta @> '{"source":"test"}'::jsonb;
Aggregate (cost=245463.60..245463.61 rows=1 width=8) (actual time=6727.589..6727.590 rows=1 loops=1)
Output: count(1)
-> Foreign Scan on fdw_schema."table" (cost=1100.00..245459.90 rows=1478 width=0) (actual time=16.213..6634.794 rows=1360025 loops=1)
Output: "table".id, "table".is_active, "table".meta, "table".created_dt
Filter: (("table".is_active IS TRUE) AND ("table".created_dt >= (('now'::cstring)::date - '7 mons'::interval)) AND ("table".created_dt <= ((('now'::cstring)::date)::timestamp with time zone - '6 mons'::interval)))
Rows Removed by Filter: 619961
Remote SQL: SELECT created_dt, is_active FROM fdw_schema.table WHERE ((meta @> '{"source": "test"}'::jsonb))
Planning time: 0.747 ms
Execution time: 6727.815 ms
ืืืงืื ืืกื ื ืืืคืจืืืจืื, ืขืืื ืืืฉืชืืฉ ืื ืืืืืช ืฉื ืืืคืจืืืจ ืืื jsonb ืืฉืื ื. 7 ืฉื ืืืช ืืืงืื 29 ืืืงืืจืืืช. ืขื ืื ืื ืืืคืฉืจืืช ืืืืฆืืืช ืืืืืื ืืืขืืจืช ืืกื ื ืื ืืืืฆืขืืช jsonb ืืฉืจืช ืืจืืืง, ืืื ืืื ืืฉืื ืืงืืช ืืืฉืืื ืืืืื ืืืช: ืื ืื ื ืืฉืชืืฉืื ืืืจืกื 9.6 ืฉื ืืกื ืื ืชืื ืื, ืืื ืขื ืกืืฃ ืืคืจืื ืื ืื ื ืืชืื ื ืื ืืืฉืืื ืืช ืืืืืงืืช ืืืืจืื ืืช ืืืขืืืจ ืืืจืกื 12. ืืืืจ ืฉื ืขืืื, ื ืืชืื ืืื ืื ืืฉืคืืข, ืื ืืฉ ืื ืืจืื ืฉืื ืืืื ืฉืืฉ ืืื ืืจืื ืชืงืืื: json_path, ืืชื ืืืืช ืืืฉื ืฉื CTE, push down (ืงืืื ืืื ืืจืกื 10). ืื ื ืืืฉ ืจืืฆื ืื ืกืืช ืืช ืื ืืงืจืื.
ืืืืจ ืืืชื
ืืืงื ื ืืืฆื ืื ืฉืื ืื ืืฉืคืืข ืขื ืืืืจืืช ืืืงืฉื ืื ืคืจื. ืืขืช ื ืจืื ืื ืงืืจื ืืืฉืจ ืื ืฉืืืฉืช ืืืกื ื ืื ืืชืืืื ืืฆืืจื ื ืืื ื.
explain analyze verbose
SELECT count(1)
FROM fdw_schema.table
WHERE is_active = True
AND created_dt >= (SELECT CURRENT_DATE::timestamptz - INTERVAL '7 month')
AND created_dt <(SELECT CURRENT_DATE::timestamptz - INTERVAL '6 month')
AND meta @> '{"source":"test"}'::jsonb;
Aggregate (cost=322041.51..322041.52 rows=1 width=8) (actual time=2278.867..2278.867 rows=1 loops=1)
Output: count(1)
InitPlan 1 (returns $0)
-> Result (cost=0.00..0.02 rows=1 width=8) (actual time=0.010..0.010 rows=1 loops=1)
Output: ((('now'::cstring)::date)::timestamp with time zone - '7 mons'::interval)
InitPlan 2 (returns $1)
-> Result (cost=0.00..0.02 rows=1 width=8) (actual time=0.003..0.003 rows=1 loops=1)
Output: ((('now'::cstring)::date)::timestamp with time zone - '6 mons'::interval)
-> Foreign Scan on fdw_schema."table" (cost=100.02..322041.41 rows=25 width=0) (actual time=8.597..2153.809 rows=1360025 loops=1)
Output: "table".id, "table".is_active, "table".meta, "table".created_dt
Remote SQL: SELECT NULL FROM fdw_schema.table WHERE (is_active) AND ((created_dt >= $1::timestamp with time zone)) AND ((created_dt < $2::timestamp with time zone)) AND ((meta @> '{"source": "test"}'::jsonb))
Planning time: 0.820 ms
Execution time: 2279.087 ms
ืื, ืืืงืฉื ื ืจืืืช ืืกืืืืช ืืืชืจ, ืืืืืจ ืืชืฉืืื ืืืืืฅ, ืืื ืืืืจืืช ืืืืฆืืข ืืื 2 ืฉื ืืืช, ืฉืื ืืืชืจ ืืคื 10 ืืืจ ืืืชืจ! ืืื ืื ื ืืืืจืื ืขื ืฉืืืืชื ืคืฉืืื ืืื ืืขืจื ื ืชืื ืื ืงืื ืืืกืืช. ืืืงืฉืืช ืืืืชืืืช ืงืืืื ื ืขืืืื ืฉื ืขื ืคื ืืื ืืืืช.
ืืกืืืื: ืื ืืชื ืืฉืชืืฉืื ื-PostgreSQL ืขื FDW, ืชืืื ืชืืืงื ืฉืื ืืคืืืืจืื ื ืฉืืืื ืืฉืจืช ืืืจืืืง, ืืชืฉืืื... ืืคืืืช ืขื ืฉืชืืืขื ืืืฆืืจืคืืช ืืื ืืืืืืช ืืฉืจืชืื ืฉืื ืื. ืืื ืื ืกืืคืืจ ืืืืืจ ืืืจ.
ืชืืื ืื ืขื ืชืฉืืืช ืืื! ืืฉืื ืืฉืืืข ืฉืืืืช, ืืขืจืืช ืืกืืคืืจืื ืขื ืืืืืืืช ืฉืื ืืชืืืืืช.
ืืงืืจ: www.habr.com