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* ngql-bnf * add java * wum * wilson * wum * fix ranking
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...nguage/4.statement-syntax/1.data-definition-statements/alter-tag-edge-syntax.md
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...ry-language/4.statement-syntax/1.data-definition-statements/drop-edge-syntax.md
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# DROP EDGE 语法 | ||
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```ngql | ||
DROP EDGE edge_type_name | ||
DROP EDGE <edge_type_name> | ||
``` | ||
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仅支持有 DROP 权限的用户进行此操作。 | ||
|
2 changes: 1 addition & 1 deletion
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...y-language/4.statement-syntax/1.data-definition-statements/drop-space-syntax.md
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# DROP SPACE 语法 | ||
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```ngql | ||
DROP SPACE space_name | ||
DROP SPACE <space_name<> | ||
``` | ||
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仅支持有 DROP 权限的用户进行此操作。 | ||
|
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...statement-syntax/2.data-query-and-manipulation-statements/insert-edge-syntax.md
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...atement-syntax/2.data-query-and-manipulation-statements/insert-vertex-syntax.md
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...-CN/2.query-language/4.statement-syntax/3.utility-statements/describe-syntax.md
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...nguage/4.statement-syntax/1.data-definition-statements/alter-tag-edge-syntax.md
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...ry-language/4.statement-syntax/1.data-definition-statements/drop-edge-syntax.md
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...y-language/4.statement-syntax/1.data-definition-statements/drop-space-syntax.md
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...statement-syntax/2.data-query-and-manipulation-statements/delete-edge-syntax.md
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# Delete Edge Syntax | ||
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The `DELETE EDGE` statement is used to delete edges. Given an edge type, the source vertex and the dest vertex, **Nebula Graph** supports `DELETE` the edge, its associated properties and the edge ranking. You can also delete an edge with a certain rank. The syntax is as the follows: | ||
The `DELETE EDGE` statement is used to delete edges. Given an edge type, the source vertex and the dest vertex, **Nebula Graph** supports `DELETE` the edge, its associated properties and the edge ranking. You can also delete an edge with a certain rank. The syntax is as follows: | ||
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```ngql | ||
DELETE EDGE <edge_type> <vid> -> <vid>@ranking [, <vid> -> <vid> ...] | ||
DELETE EDGE <edge_type> <vid> -> <vid>[@<ranking>] [, <vid> -> <vid> ...] | ||
``` | ||
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**Nebula Graph** will find the properties associated with the edge and delete all of them. Atomic operation is not guaranteed during the entire process for now, so please retry when failure occurs. |
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