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change-returned-UnknownProp-to-NULL #2493

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Jan 17, 2023
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change-returned-UnknownProp-to-NULL #2493

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2 changes: 1 addition & 1 deletion docs-2.0/2.quick-start/6.cheatsheet-for-ngql-command.md
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Original file line number Diff line number Diff line change
Expand Up @@ -253,7 +253,7 @@
| `GO FROM "player102" OVER serve YIELD dst(edge)` | 返回 player102 所属队伍。 |
| `GO 2 STEPS FROM "player102" OVER follow YIELD dst(edge)` | 返回距离 player102 两跳的朋友。 |
| `GO FROM "player100", "player102" OVER serve WHERE properties(edge).start_year > 1995 YIELD DISTINCT properties($$).name AS team_name, properties(edge).start_year AS start_year, properties($^).name AS player_name` | 添加过滤条件。 |
| `GO FROM "player100" OVER follow, serve YIELD properties(edge).degree, properties(edge).start_year` | 遍历多个 Edge type。属性没有值时，会显示`UNKNOWN_PROP`。 |
| `GO FROM "player100" OVER follow, serve YIELD properties(edge).degree, properties(edge).start_year` | 遍历多个 Edge type。属性没有值时，会显示`NULL`。 |
| `GO FROM "player100" OVER follow REVERSELY YIELD src(edge) AS destination` | 返回 player100 入方向的邻居点。 |
| `GO FROM "player100" OVER follow REVERSELY YIELD src(edge) AS id | GO FROM $-.id OVER serve WHERE properties($^).age > 20 YIELD properties($^).name AS FriendOf, properties($$).name AS Team` | 查询 player100 的朋友和朋友所属队伍。 |
| `GO FROM "player102" OVER follow YIELD dst(edge) AS both` | 返回 player102 所有邻居点。 |
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8 changes: 4 additions & 4 deletions docs-2.0/3.ngql-guide/7.general-query-statements/3.go.md
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Expand Up @@ -105,15 +105,15 @@ nebula> GO FROM "player100", "player102" OVER serve \
```

```ngql
# 遍历多个 Edge type。属性没有值时，会显示 UNKNOWN_PROP。
# 遍历多个 Edge type。属性没有值时，会显示`NULL`。
nebula> GO FROM "player100" OVER follow, serve \
YIELD properties(edge).degree, properties(edge).start_year;
+-------------------------+-----------------------------+
| properties(EDGE).degree | properties(EDGE).start_year |
+-------------------------+-----------------------------+
| 95 | UNKNOWN_PROP |
| 95 | UNKNOWN_PROP |
| UNKNOWN_PROP | 1997 |
| 95 | __NULL__ |
| 95 | __NULL__ |
| __NULL__ | 1997 |
+-------------------------+-----------------------------+
```

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14 changes: 7 additions & 7 deletions docs-2.0/3.ngql-guide/8.clauses-and-options/limit.md
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Expand Up @@ -80,13 +80,13 @@ nebula> GO 3 STEPS FROM "player100" \
OVER * \
YIELD properties($$).name AS NAME, properties($$).age AS Age \
LIMIT [3,3,3];
+-----------------+--------------+
| NAME | Age |
+-----------------+--------------+
| "Spurs" | UNKNOWN_PROP |
| "Tony Parker" | 36 |
| "Manu Ginobili" | 41 |
+-----------------+--------------+
+-----------------+----------+
| NAME | Age |
+-----------------+----------+
| "Tony Parker" | 36 |
| "Manu Ginobili" | 41 |
| "Spurs" | __NULL__ |
+-----------------+----------+

nebula> GO 3 STEPS FROM "player102" OVER * BIDIRECT\
YIELD dst(edge) \
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34 changes: 17 additions & 17 deletions docs-2.0/3.ngql-guide/8.clauses-and-options/sample.md
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Expand Up @@ -23,26 +23,26 @@ nebula> GO 3 STEPS FROM "player100" \
OVER * \
YIELD properties($$).name AS NAME, properties($$).age AS Age \
SAMPLE [1,2,3];
+-----------------+--------------+
| NAME | Age |
+-----------------+--------------+
| "Spurs" | UNKNOWN_PROP |
| "Tony Parker" | 36 |
| "Manu Ginobili" | 41 |
+-----------------+--------------+
+-----------------+----------+
| NAME | Age |
+-----------------+----------+
| "Tony Parker" | 36 |
| "Manu Ginobili" | 41 |
| "Spurs" | __NULL__ |
+-----------------+----------+

nebula> GO 1 TO 3 STEPS FROM "player100" \
OVER * \
YIELD properties($$).name AS NAME, properties($$).age AS Age \
SAMPLE [2,2,2];
+---------------------+-----+
| NAME | Age |
+---------------------+-----+
| "Manu Ginobili" | 41 |
| "Tony Parker" | 36 |
| "Tim Duncan" | 42 |
| "LaMarcus Aldridge" | 33 |
| "Tony Parker" | 36 |
| "Tim Duncan" | 42 |
+---------------------+-----+
+-----------------+----------+
| NAME | Age |
+-----------------+----------+
| "Manu Ginobili" | 41 |
| "Spurs" | __NULL__ |
| "Tim Duncan" | 42 |
| "Spurs" | __NULL__ |
| "Manu Ginobili" | 41 |
| "Spurs" | __NULL__ |
+-----------------+----------+
```