diff --git a/docs-2.0/3.ngql-guide/7.general-query-statements/2.match.md b/docs-2.0/3.ngql-guide/7.general-query-statements/2.match.md index 5b45b967f28..d250e783e56 100644 --- a/docs-2.0/3.ngql-guide/7.general-query-statements/2.match.md +++ b/docs-2.0/3.ngql-guide/7.general-query-statements/2.match.md @@ -55,7 +55,7 @@ nebula> REBUILD TAG INDEX name; | 121 | +------------+ -nebula> REBUILD EDGE INDEX follow_index +nebula> REBUILD EDGE INDEX follow_index; +------------+ | New Job Id | +------------+ @@ -65,24 +65,24 @@ nebula> REBUILD EDGE INDEX follow_index # 确认重建索引成功。 nebula> SHOW JOB 121; -+----------------+---------------------+------------+-------------------------+-------------------------+ -| Job Id(TaskId) | Command(Dest) | Status | Start Time | Stop Time | -+----------------+---------------------+------------+-------------------------+-------------------------+ -| 121 | "REBUILD_TAG_INDEX" | "FINISHED" | 2021-05-27T02:18:02.000 | 2021-05-27T02:18:02.000 | -| 0 | "storaged1" | "FINISHED" | 2021-05-27T02:18:02.000 | 2021-05-27T02:18:02.000 | -| 1 | "storaged0" | "FINISHED" | 2021-05-27T02:18:02.000 | 2021-05-27T02:18:02.000 | -| 2 | "storaged2" | "FINISHED" | 2021-05-27T02:18:02.000 | 2021-05-27T02:18:02.000 | -+----------------+---------------------+------------+-------------------------+-------------------------+ ++----------------+---------------------+------------+----------------------------+----------------------------+ +| Job Id(TaskId) | Command(Dest) | Status | Start Time | Stop Time | ++----------------+---------------------+------------+----------------------------+----------------------------+ +| 121 | "REBUILD_TAG_INDEX" | "FINISHED" | 2021-05-27T02:18:02.000000 | 2021-05-27T02:18:02.000000 | +| 0 | "storaged1" | "FINISHED" | 2021-05-27T02:18:02.000000 | 2021-05-27T02:18:02.000000 | +| 1 | "storaged0" | "FINISHED" | 2021-05-27T02:18:02.000000 | 2021-05-27T02:18:02.000000 | +| 2 | "storaged2" | "FINISHED" | 2021-05-27T02:18:02.000000 | 2021-05-27T02:18:02.000000 | ++----------------+---------------------+------------+----------------------------+----------------------------+ nebula> SHOW JOB 122; -+----------------+----------------------+------------+-------------------------+-------------------------+ -| Job Id(TaskId) | Command(Dest) | Status | Start Time | Stop Time | -+----------------+----------------------+------------+-------------------------+-------------------------+ -| 122 | "REBUILD_EDGE_INDEX" | "FINISHED" | 2021-05-27T02:18:11.000 | 2021-05-27T02:18:11.000 | -| 0 | "storaged1" | "FINISHED" | 2021-05-27T02:18:11.000 | 2021-05-27T02:18:21.000 | -| 1 | "storaged0" | "FINISHED" | 2021-05-27T02:18:11.000 | 2021-05-27T02:18:21.000 | -| 2 | "storaged2" | "FINISHED" | 2021-05-27T02:18:11.000 | 2021-05-27T02:18:21.000 | -+----------------+----------------------+------------+-------------------------+-------------------------+ ++----------------+----------------------+------------+----------------------------+----------------------------+ +| Job Id(TaskId) | Command(Dest) | Status | Start Time | Stop Time | ++----------------+----------------------+------------+----------------------------+----------------------------+ +| 122 | "REBUILD_EDGE_INDEX" | "FINISHED" | 2021-05-27T02:18:11.000000 | 2021-05-27T02:18:11.000000 | +| 0 | "storaged1" | "FINISHED" | 2021-05-27T02:18:11.000000 | 2021-05-27T02:18:21.000000 | +| 1 | "storaged0" | "FINISHED" | 2021-05-27T02:18:11.000000 | 2021-05-27T02:18:21.000000 | +| 2 | "storaged2" | "FINISHED" | 2021-05-27T02:18:11.000000 | 2021-05-27T02:18:21.000000 | ++----------------+----------------------+------------+----------------------------+----------------------------+ ``` ### 匹配点 @@ -98,14 +98,14 @@ nebula> SHOW JOB 122; 用户可以在点的右侧用`:`表示模式中的Tag。 ```ngql -nebula> MATCH (v:player) RETURN v; +nebula> MATCH (v:player) \ + RETURN v; +---------------------------------------------------------------+ | v | +---------------------------------------------------------------+ -| ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | -| ("player106" :player{age: 25, name: "Kyle Anderson"}) | -| ("player115" :player{age: 40, name: "Kobe Bryant"}) | -+---------------------------------------------------------------+ +| ("player105" :player{age: 31, name: "Danny Green"}) | +| ("player109" :player{age: 34, name: "Tiago Splitter"}) | +| ("player111" :player{age: 38, name: "David West"}) | ... ``` @@ -119,22 +119,25 @@ nebula> MATCH (v:player) RETURN v; ```ngql # 使用属性name搜索匹配的点。 -nebula> MATCH (v:player{name:"Tim Duncan"}) RETURN v; +nebula> MATCH (v:player{name:"Tim Duncan"}) \ + RETURN v; +----------------------------------------------------+ | v | +----------------------------------------------------+ -| ("player100" :player{name: "Tim Duncan", age: 42}) | +| ("player100" :player{age: 42, name: "Tim Duncan"}) | +----------------------------------------------------+ ``` 使用`WHERE`子句也可以实现相同的操作： ```ngql -nebula> MATCH (v:player) WHERE v.name == "Tim Duncan" RETURN v; +nebula> MATCH (v:player) \ + WHERE v.name == "Tim Duncan" \ + RETURN v; +----------------------------------------------------+ | v | +----------------------------------------------------+ -| ("player100" :player{name: "Tim Duncan", age: 42}) | +| ("player100" :player{age: 42, name: "Tim Duncan"}) | +----------------------------------------------------+ ``` @@ -147,7 +150,9 @@ nebula> MATCH (v:player) WHERE v.name == "Tim Duncan" RETURN v; 用户可以使用点ID去匹配点。`id()`函数可以检索点的ID。 ```ngql -nebula> MATCH (v) WHERE id(v) == 'player101' RETURN v; +nebula> MATCH (v) \ + WHERE id(v) == 'player101' \ + RETURN v; +-----------------------------------------------------+ | v | +-----------------------------------------------------+ @@ -159,13 +164,14 @@ nebula> MATCH (v) WHERE id(v) == 'player101' RETURN v; ```ngql nebula> MATCH (v:player { name: 'Tim Duncan' })--(v2) \ - WHERE id(v2) IN ["player101", "player102"] RETURN v2; + WHERE id(v2) IN ["player101", "player102"] \ + RETURN v2; +-----------------------------------------------------------+ | v2 | +-----------------------------------------------------------+ -| ("player101" :player{name: "Tony Parker", age: 36}) | -| ("player102" :player{name: "LaMarcus Aldridge", age: 33}) | -| ("player101" :player{name: "Tony Parker", age: 36}) | +| ("player101" :player{age: 36, name: "Tony Parker"}) | +| ("player101" :player{age: 36, name: "Tony Parker"}) | +| ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | +-----------------------------------------------------------+ ``` @@ -183,12 +189,10 @@ nebula> MATCH (v:player{name:"Tim Duncan"})--(v2) \ +---------------------+ | Name | +---------------------+ +| "Spurs" | | "Tony Parker" | | "LaMarcus Aldridge" | | "Marco Belinelli" | -| "Danny Green" | -| "Aron Baynes" | -+---------------------+ ... ``` @@ -215,12 +219,9 @@ nebula> MATCH (v:player{name:"Tim Duncan"})-->(v2)<--(v3) \ +---------------------+ | Name | +---------------------+ -| "Tony Parker" | -| "Tiago Splitter" | | "Dejounte Murray" | -| "Tony Parker" | | "LaMarcus Aldridge" | -+---------------------+ +| "Marco Belinelli" | ... ``` @@ -232,12 +233,9 @@ nebula> MATCH (v:player{name:"Tim Duncan"})-->()<--(v3) \ +---------------------+ | Name | +---------------------+ -| "Tony Parker" | +| "Dejounte Murray" | | "LaMarcus Aldridge" | -| "Rudy Gay" | -| "Danny Green" | -| "Kyle Anderson" | -+---------------------+ +| "Marco Belinelli" | ... ``` @@ -251,9 +249,9 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-->(v2) \ +--------------------------------------------------------------------------------------------------------------------------------------+ | p | +--------------------------------------------------------------------------------------------------------------------------------------+ +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:serve@0 {end_year: 2016, start_year: 1997}]->("team204" :team{name: "Spurs"})> | | <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})> | | <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})> | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:serve@0 {end_year: 2016, start_year: 1997}]->("team204" :team{name: "Spurs"})> | +--------------------------------------------------------------------------------------------------------------------------------------+ ``` @@ -268,13 +266,12 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-->(v2) \ ```ngql nebula> MATCH (v:player{name:"Tim Duncan"})-[e]-(v2) \ RETURN e; -+---------------------------------------------------------------------------+ -| e | -+---------------------------------------------------------------------------+ -| [:follow "player101"->"player100" @0 {degree: 95}] | -| [:follow "player102"->"player100" @0 {degree: 75}] | -| [:serve "player100"->"team204" @0 {end_year: 2016, start_year: 1997}] | -+---------------------------------------------------------------------------+ ++-----------------------------------------------------------------------+ +| e | ++-----------------------------------------------------------------------+ +| [:serve "player100"->"team204" @0 {end_year: 2016, start_year: 1997}] | +| [:follow "player101"->"player100" @0 {degree: 95}] | +| [:follow "player102"->"player100" @0 {degree: 75}] | ... ``` @@ -288,12 +285,9 @@ nebula> MATCH ()-[e:follow]-() \ +-----------------------------------------------------+ | e | +-----------------------------------------------------+ -| [:follow "player113"->"player119" @0 {degree: 99}] | -| [:follow "player130"->"player149" @0 {degree: 80}] | -| [:follow "player149"->"player130" @0 {degree: 80}] | -| [:follow "player136"->"player117" @0 {degree: 90}] | -| [:follow "player142"->"player117" @0 {degree: 90}] | -+-----------------------------------------------------+ +| [:follow "player104"->"player105" @0 {degree: 60}] | +| [:follow "player113"->"player105" @0 {degree: 99}] | +| [:follow "player105"->"player100" @0 {degree: 70}] | ... ``` @@ -339,13 +333,12 @@ nebula> MATCH (v:player{name:"Tim Duncan"})-[e:follow|:serve]->(v2) \ ```ngql nebula> MATCH (v:player{name:"Tim Duncan"})-[]->(v2)<-[e:serve]-(v3) \ RETURN v2, v3; -+------------------------------------+-----------------------------------------------------------+ -| v2 | v3 | -+------------------------------------+-----------------------------------------------------------+ -| ("player204" :team{name: "Spurs"}) | ("player101" :player{name: "Tony Parker", age: 36}) | -| ("player204" :team{name: "Spurs"}) | ("player102" :player{name: "LaMarcus Aldridge", age: 33}) | -| ("player204" :team{name: "Spurs"}) | ("player103" :player{age: 32, name: "Rudy Gay"}) | -+------------------------------------+-----------------------------------------------------------+ ++----------------------------------+-----------------------------------------------------------+ +| v2 | v3 | ++----------------------------------+-----------------------------------------------------------+ +| ("team204" :team{name: "Spurs"}) | ("player104" :player{age: 32, name: "Marco Belinelli"}) | +| ("team204" :team{name: "Spurs"}) | ("player101" :player{age: 36, name: "Tony Parker"}) | +| ("team204" :team{name: "Spurs"}) | ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | ... ``` @@ -359,9 +352,9 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[e:follow*2]->(v2) \ +-----------------------------------------------------------+ | Friends | +-----------------------------------------------------------+ -| ("player100" :player{name: "Tim Duncan", age: 42}) | -| ("player102" :player{name: "LaMarcus Aldridge", age: 33}) | -| ("player125" :player{name: "Manu Ginobili", age: 41}) | +| ("player100" :player{age: 42, name: "Tim Duncan"}) | +| ("player125" :player{age: 41, name: "Manu Ginobili"}) | +| ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | +-----------------------------------------------------------+ ``` @@ -396,11 +389,10 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[e:follow*1..3]->(v2) \ +-----------------------------------------------------------+ | Friends | +-----------------------------------------------------------+ -| ("player100" :player{age: 42, name: "Tim Duncan"}) | | ("player101" :player{age: 36, name: "Tony Parker"}) | | ("player125" :player{age: 41, name: "Manu Ginobili"}) | -| ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | -+-----------------------------------------------------------+ +| ("player100" :player{age: 42, name: "Tim Duncan"}) | +... ``` 用户可以使用`DISTINCT`关键字聚合重复结果。 @@ -411,10 +403,10 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[e:follow*1..3]->(v2:player) \ +-----------------------------------------------------------+-----------+ | Friends | count(v2) | +-----------------------------------------------------------+-----------+ -| ("player125" :player{age: 41, name: "Manu Ginobili"}) | 3 | | ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | 1 | | ("player100" :player{age: 42, name: "Tim Duncan"}) | 4 | | ("player101" :player{age: 36, name: "Tony Parker"}) | 3 | +| ("player125" :player{age: 41, name: "Manu Ginobili"}) | 3 | +-----------------------------------------------------------+-----------+ ``` @@ -426,10 +418,10 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[e:follow*0..3]->(v2:player) \ +-----------------------------------------------------------+-----------+ | Friends | count(v2) | +-----------------------------------------------------------+-----------+ -| ("player125" :player{age: 41, name: "Manu Ginobili"}) | 3 | -| ("player101" :player{age: 36, name: "Tony Parker"}) | 3 | | ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | 1 | | ("player100" :player{age: 42, name: "Tim Duncan"}) | 5 | +| ("player125" :player{age: 41, name: "Manu Ginobili"}) | 3 | +| ("player101" :player{age: 36, name: "Tony Parker"}) | 3 | +-----------------------------------------------------------+-----------+ ``` @@ -443,11 +435,11 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[e:follow|serve*2]->(v2) \ +-----------------------------------------------------------+ | v2 | +-----------------------------------------------------------+ -| ("player100" :player{name: "Tim Duncan", age: 42}) | -| ("player102" :player{name: "LaMarcus Aldridge", age: 33}) | -| ("player125" :player{name: "Manu Ginobili", age: 41}) | -| ("player204" :team{name: "Spurs"}) | -| ("player215" :team{name: "Hornets"}) | +| ("team204" :team{name: "Spurs"}) | +| ("player100" :player{age: 42, name: "Tim Duncan"}) | +| ("team215" :team{name: "Hornets"}) | +| ("player125" :player{age: 41, name: "Manu Ginobili"}) | +| ("player102" :player{age: 33, name: "LaMarcus Aldridge"}) | +-----------------------------------------------------------+ ``` @@ -463,18 +455,18 @@ nebula> MATCH (v:player{name:"Tim Duncan"}) \ +----------------------------------------------------+ | v | +----------------------------------------------------+ -| ("player100" :player{name: "Tim Duncan", age: 42}) | +| ("player100" :player{age: 42, name: "Tim Duncan"}) | +----------------------------------------------------+ nebula> MATCH (v:player{name:"Tim Duncan"})-[e]->(v2) \ RETURN e; -+---------------------------------------------------------------------------+ -| e | -+---------------------------------------------------------------------------+ -| [:follow "player100"->"player101" @0 {degree: 95}] | -| [:follow "player100"->"player125" @0 {degree: 95}] | -| [:serve "player100"->"team204" @0 {end_year: 2016, start_year: 1997}] | -+---------------------------------------------------------------------------+ ++-----------------------------------------------------------------------+ +| e | ++-----------------------------------------------------------------------+ +| [:serve "player100"->"team204" @0 {end_year: 2016, start_year: 1997}] | +| [:follow "player100"->"player101" @0 {degree: 95}] | +| [:follow "player100"->"player125" @0 {degree: 95}] | ++-----------------------------------------------------------------------+ ``` ### 检索点ID @@ -550,13 +542,13 @@ nebula> MATCH (v:player{name:"Tim Duncan"}) \ ```ngql nebula> MATCH p=(v:player{name:"Tim Duncan"})-[]->(v2) \ RETURN properties(v2); -+------------------------------------+ -| properties(v2) | -+------------------------------------+ -| {"name":"Spurs"} | -| {"name":"Tony Parker", "age":36} | -| {"age":41, "name":"Manu Ginobili"} | -+------------------------------------+ ++----------------------------------+ +| properties(v2) | ++----------------------------------+ +| {name: "Spurs"} | +| {age: 36, name: "Tony Parker"} | +| {age: 41, name: "Manu Ginobili"} | ++----------------------------------+ ``` ### 检索Edge type @@ -569,8 +561,8 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[e]->() \ +----------+ | type(e) | +----------+ -| "follow" | | "serve" | +| "follow" | +----------+ ``` @@ -614,13 +606,13 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[]->(v2) \ ```ngql nebula> MATCH p=(v:player{name:"Tim Duncan"})-[]->(v2) \ RETURN relationships(p); -+-----------------------------------------------------------------------------+ -| relationships(p) | -+-----------------------------------------------------------------------------+ -| [[:follow "player100"->"player101" @0 {degree: 95}]] | -| [[:follow "player100"->"player125" @0 {degree: 95}]] | -| [[:serve "player100"->"team204" @0 {end_year: 2016, start_year: 1997}]] | -+-----------------------------------------------------------------------------+ ++-------------------------------------------------------------------------+ +| relationships(p) | ++-------------------------------------------------------------------------+ +| [[:serve "player100"->"team204" @0 {end_year: 2016, start_year: 1997}]] | +| [[:follow "player100"->"player101" @0 {degree: 95}]] | +| [[:follow "player100"->"player125" @0 {degree: 95}]] | ++-------------------------------------------------------------------------+ ``` ### 检索路径长度 @@ -633,20 +625,19 @@ nebula> MATCH p=(v:player{name:"Tim Duncan"})-[*..2]->(v2) \ +------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------+ | Paths | Length | +------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------+ -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})-[:serve@0 {end_year: 2018, start_year: 2002}]->("team204" :team{name: "Spurs"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})-[:follow@0 {degree: 90}]->("player100" :player{age: 42, name: "Tim Duncan"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:serve@0 {end_year: 2019, start_year: 2018}]->("team215" :team{name: "Hornets"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:serve@0 {end_year: 2018, start_year: 1999}]->("team204" :team{name: "Spurs"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:follow@0 {degree: 90}]->("player102" :player{age: 33, name: "LaMarcus Aldridge"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:follow@0 {degree: 95}]->("player100" :player{age: 42, name: "Tim Duncan"})> | 2 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:serve@0 {end_year: 2016, start_year: 1997}]->("team204" :team{name: "Spurs"})> | 1 | -| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})> | 1 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:serve@0 {end_year: 2016, start_year: 1997}]->("team204" :team{name: "Spurs"})> | 1 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})> | 1 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})> | 1 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:serve@0 {end_year: 2018, start_year: 1999}]->("team204" :team{name: "Spurs"})> | 2 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:serve@0 {end_year: 2019, start_year: 2018}]->("team215" :team{name: "Hornets"})> | 2 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:follow@0 {degree: 95}]->("player100" :player{age: 42, name: "Tim Duncan"})> | 2 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:follow@0 {degree: 90}]->("player102" :player{age: 33, name: "LaMarcus Aldridge"})> | 2 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player101" :player{age: 36, name: "Tony Parker"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})> | 2 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})-[:serve@0 {end_year: 2018, start_year: 2002}]->("team204" :team{name: "Spurs"})> | 2 | +| <("player100" :player{age: 42, name: "Tim Duncan"})-[:follow@0 {degree: 95}]->("player125" :player{age: 41, name: "Manu Ginobili"})-[:follow@0 {degree: 90}]->("player100" :player{age: 42, name: "Tim Duncan"})> | 2 | +------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------+ ``` !!! Performance - Nebula Graph {{ nebula.release }} 中 `MATCH` 语句对性能和资源占用进行了初步优化。 - - 较简单的逻辑可以使用 `GO`, `LOOKUP`, `|` 和 `FETCH` 等来替代。 + Nebula Grap中`MATCH`语句的性能和资源占用得到了优化，但对性能要求较高时，仍建议使用 `GO`, `LOOKUP`, `|` 和 `FETCH` 等来替代`MATCH`。