Move std() sum() to aggregating functions and add collect examples (#…

…1759) * move-std()-sum()-to-aggregating-functions-and-add-collect-examples * Update 15.aggregating.md
vesoft-inc · Nov 16, 2022 · 65590f6 · 65590f6
1 parent 016603a
commit 65590f6
Show file tree

Hide file tree

Showing 2 changed files with 44 additions and 17 deletions.
diff --git a/docs-2.0/3.ngql-guide/6.functions-and-expressions/15.aggregating.md b/docs-2.0/3.ngql-guide/6.functions-and-expressions/15.aggregating.md
@@ -257,24 +257,32 @@ nebula> MATCH (n:player) \
 | 25  | ["Joel Embiid", "Kyle Anderson"]                                         |
 +-----+--------------------------------------------------------------------------+
 ...
-```
 
-## Aggregating example
+nebula> GO FROM "player100" OVER serve \
+        YIELD properties($$).name AS name \
+        | GROUP BY $-.name \
+        YIELD collect($-.name) AS name;
++-----------+
+| name      |
++-----------+
+| ["Spurs"] |
++-----------+
 
-```ngql
-nebula>  GO FROM "player100" OVER follow YIELD dst(edge) AS dst, properties($$).age AS age \
-         | GROUP BY $-.dst \
-         YIELD \
-         $-.dst AS dst, \
-         toInteger((sum($-.age)/count($-.age)))+avg(distinct $-.age+1)+1 AS statistics;
-+-------------+------------+
-| dst         | statistics |
-+-------------+------------+
-| "player125" | 84.0       |
-| "player101" | 74.0       |
-+-------------+------------+
-```
+nebula> LOOKUP ON player \
+        YIELD player.age As playerage \
+        | GROUP BY $-.playerage \
+        YIELD collect($-.playerage) AS playerage;
++------------------+
+| playerage        |
++------------------+
+| [22]             |
+| [47]             |
+| [43]             |
+| [25, 25]         |
++------------------+
+...
 
+```
 
 ## std()
 
@@ -312,4 +320,22 @@ nebula> MATCH (v:player) RETURN sum(v.player.age);
 +-------------------+
 | 1698              |
 +-------------------+
-```
+```
+
+## Aggregating example
+
+```ngql
+nebula>  GO FROM "player100" OVER follow YIELD dst(edge) AS dst, properties($$).age AS age \
+         | GROUP BY $-.dst \
+         YIELD \
+         $-.dst AS dst, \
+         toInteger((sum($-.age)/count($-.age)))+avg(distinct $-.age+1)+1 AS statistics;
++-------------+------------+
+| dst         | statistics |
++-------------+------------+
+| "player125" | 84.0       |
+| "player101" | 74.0       |
++-------------+------------+
+```
+
+
diff --git a/docs-2.0/3.ngql-guide/6.functions-and-expressions/16.type-conversion.md b/docs-2.0/3.ngql-guide/6.functions-and-expressions/16.type-conversion.md
@@ -145,4 +145,5 @@ nebula> YIELD hash(toLower("HELLO NEBULA"));
 +-------------------------------+
 | -8481157362655072082          |
 +-------------------------------+
-```
+```
+