[doc]add if not exists #1407
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[doc]add if not exists #1407
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amber-moe
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monadbobo,
jievince,
wilsonyou,
laura-ding and
whitewum
wilsonyou
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Dec 9, 2019
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whitewum
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jievince
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Dec 13, 2019
| ``` | ||
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| This statement creates a new space with the given name. SPACE is a region that provides physically isolated graphs in **Nebula Graph**. An error occurs if the database exists. | ||
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| ## IF NOT EXIST | ||
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| We added the `If NOT EXIST` keywords for creating spaces. This keyword automatically detects if the corresponding space exists. If it does not exist, a new one is created. Otherwise, no space is created. |
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I don't agree. 3 words here.
| @@ -21,6 +21,12 @@ CREATE {TAG | EDGE} <tag_name> | <edge_name> | |||
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| The features of this syntax are described in the following sections: | |||
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| ## IF NOT EXIST | |||
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| We added the `If NOT EXIST` keywords for creating tags or edges. This keyword automatically detects if the corresponding tag or edge exists. If it does not exist, a new one is created. Otherwise, no tag or edge is created. | |||
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whitewum
approved these changes
Dec 16, 2019
|
Unit testing passed. |
tong-hao
pushed a commit
to tong-hao/nebula
that referenced
this pull request
Jun 1, 2021
* add if not exist * comments * jie * wum * update query syntax
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Add if not exist in create space and tag/edge