[doc]add if exists in dropping schema #1511
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Shylock-Hg
reviewed
Dec 25, 2019
| ``` | ||
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| 仅支持有 DROP 权限的用户进行此操作。 | ||
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| 删除边可使用 `IF EXISTS` 关键字，这个关键字会自动检测对应的边是否存在，如果存在则删除，如果不存在则直接返回。 |
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我觉得没有必要强调，直接返回就表明什么操作都不用做了。强调错误反而会让人误解。
| DROP SPACE 将删除指定 space 内的所有点和边。 | ||
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| 删除图空间可使用 `IF EXISTS` 关键字，这个关键字会自动检测对应的图空间是否存在，如果存在则删除，如果不存在则直接返回。 |
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| 仅支持有 DROP 权限的用户进行此操作。 | ||
| > 请谨慎进行此操作。 | ||
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| 删除标签可使用 `IF EXISTS` 关键字，这个关键字会自动检测对应的标签是否存在，如果存在则删除，如果不存在则直接返回。 |
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| You must have the DROP privilege for the edge type. | ||
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| You can use the `If EXISTS` keywords when dropping edges. This keyword automatically detects if the corresponding edge exists. If it exists, it will be deleted. Otherwise, no edge is deleted. |
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| You must have the DROP privilege for the graph space. | ||
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| DROP SPACE deletes everything (all the vertices, edges, indices, and properties) in the specific space. | ||
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| You can use the `If EXISTS` keywords when dropping spaces. This keyword automatically detects if the corresponding space exists. If it exists, it will be deleted. Otherwise, no space is deleted. |
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| You must have the DROP privilege for the tag. | ||
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| > Be careful with this statement. | ||
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| You can use the `If EXISTS` keywords when dropping tags. This keyword automatically detects if the corresponding tag exists. If it exists, it will be deleted. Otherwise, no tag is deleted. |
whitewum
approved these changes
Dec 25, 2019
Shylock-Hg
approved these changes
Jan 6, 2020
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Unit testing passed. |
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@yixinglu Seems trigger CI unexpected. |
tong-hao
pushed a commit
to tong-hao/nebula
that referenced
this pull request
Jun 1, 2021
Co-authored-by: dutor <[email protected]>
yixinglu
pushed a commit
to yixinglu/nebula
that referenced
this pull request
Jan 31, 2023
* Return an semantic error if no tag is found for a property while validating a match. * Return an semantic error if no tag is found for a property while validating a match. * Add a tck case for the fixed bug. * commented out unused codes. * add tag in tck cases * fixing tck * updated tck cases to add missing cases that are supposed to be there. * Return an semantic error if no tag is found for a property while validating a match. * Add a tck case for the fixed bug. * commented out unused codes. * add tag in tck cases * fixing tck * updated tck cases to add missing cases that are supposed to be there. * update * update tck case. Co-authored-by: Sophie <[email protected]> Co-authored-by: Cheng Xuntao <[email protected]> Co-authored-by: Sophie <[email protected]>
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What changes were proposed in this pull request?
Add
IF EXISTSkeywords in dropping schema.