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add example of time type #2489

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merged 3 commits into from
Jan 30, 2023
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add example of time type #2489

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df5ef39
add example of time type
cooper-lzy Jan 16, 2023
8febdb2
Update 4.date-and-time.md
cooper-lzy Jan 16, 2023
78481bb
Update docs-2.0/3.ngql-guide/3.data-types/4.date-and-time.md
foesa-yang Jan 17, 2023
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32 changes: 28 additions & 4 deletions docs-2.0/3.ngql-guide/3.data-types/4.date-and-time.md
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Original file line number Diff line number Diff line change
Expand Up @@ -176,7 +176,18 @@ nebula> RETURN timestamp(datetime("2022-08-29T07:53:10.939000"));
nebula> INSERT VERTEX date1(p1, p2, p3) VALUES "test1":(date("2021-03-17"), time("17:53:59"), datetime("2017-03-04T22:30:40.003000[Asia/Shanghai]"));
```

3. 获取`test1`的属性`p1`的月份。
3. 查询`test1`的属性`p1`是否为`2021-03-17`。

```ngql
nebula> MATCH (v:date1) RETURN v.date1.p1 == date("2021-03-17");
+----------------------------------+
| (v.date1.p1==date("2021-03-17")) |
+----------------------------------+
| true |
+----------------------------------+
```

4. 获取`test1`的属性`p1`的月份。

```ngql
nebula> CREATE TAG INDEX IF NOT EXISTS date1_index ON date1(p1);
Expand All @@ -189,13 +200,26 @@ nebula> RETURN timestamp(datetime("2022-08-29T07:53:10.939000"));
+------------------+
```

4. 创建 Tag，名称为`school`，包含`TIMESTAMP`类型。
5. 查找 Tag `date1`中属性`p3`小于`2023-01-01T00:00:00.000000`的值。

```ngql
nebula> MATCH (v:date1) \
WHERE v.date1.p3 < datetime("2023-01-01T00:00:00.000000") \
RETURN v.date1.p3;
+----------------------------+
| v.date1.p3 |
+----------------------------+
| 2017-03-04T14:30:40.003000 |
+----------------------------+
```

6. 创建 Tag，名称为`school`，包含`TIMESTAMP`类型。

```ngql
nebula> CREATE TAG IF NOT EXISTS school(name string , found_time timestamp);
```

5. 插入点，名称为`DUT`，存储时间为`"1988-03-01T08:00:00"`。
7. 插入点，名称为`DUT`，存储时间为`"1988-03-01T08:00:00"`。

```ngql
# 时间戳形式插入，1988-03-01T08:00:00 对应的时间戳为 573177600，转换为 UTC 时间为 573206400。
Expand All @@ -205,7 +229,7 @@ nebula> RETURN timestamp(datetime("2022-08-29T07:53:10.939000"));
nebula> INSERT VERTEX school(name, found_time) VALUES "DUT":("DUT", timestamp("1988-03-01T08:00:00"));
```

6. 插入点，名称为`dut`，用`now()`或`timestamp()`函数存储时间。
8. 插入点，名称为`dut`，用`now()`或`timestamp()`函数存储时间。

```ngql
# 用 now() 函数存储时间
Expand Down