mirror of https://gitee.com/bigwinds/arangodb
31 lines
2.1 KiB
Plaintext
31 lines
2.1 KiB
Plaintext
arangosh> db.test.ensureUniqueConstraint(<span class="hljs-string">"a"</span>, <span class="hljs-string">"b.c"</span>);
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{
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<span class="hljs-string">"id"</span> : <span class="hljs-string">"test/1177133612"</span>,
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"hash"</span>,
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<span class="hljs-string">"fields"</span> : [
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<span class="hljs-string">"a"</span>,
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<span class="hljs-string">"b.c"</span>
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],
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<span class="hljs-string">"selectivityEstimate"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"unique"</span> : <span class="hljs-literal">true</span>,
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<span class="hljs-string">"sparse"</span> : <span class="hljs-literal">false</span>,
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<span class="hljs-string">"isNewlyCreated"</span> : <span class="hljs-literal">true</span>,
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<span class="hljs-string">"code"</span> : <span class="hljs-number">201</span>
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}
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arangosh> db.test.save({ a : <span class="hljs-number">1</span>, b : { c : <span class="hljs-number">1</span> } });
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{
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<span class="hljs-string">"_id"</span> : <span class="hljs-string">"test/1177461292"</span>,
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<span class="hljs-string">"_rev"</span> : <span class="hljs-string">"1177461292"</span>,
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<span class="hljs-string">"_key"</span> : <span class="hljs-string">"1177461292"</span>
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}
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arangosh> db.test.save({ a : <span class="hljs-number">1</span>, b : { c : <span class="hljs-number">1</span> } });
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[ArangoError <span class="hljs-number">1210</span>: cannot create <span class="hljs-built_in">document</span>, unique constraint violated]
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arangosh> db.test.save({ a : <span class="hljs-number">1</span>, b : { c : <span class="hljs-literal">null</span> } });
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{
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<span class="hljs-string">"_id"</span> : <span class="hljs-string">"test/1177920044"</span>,
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<span class="hljs-string">"_rev"</span> : <span class="hljs-string">"1177920044"</span>,
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<span class="hljs-string">"_key"</span> : <span class="hljs-string">"1177920044"</span>
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}
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arangosh> db.test.save({ a : <span class="hljs-number">1</span> });
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[ArangoError <span class="hljs-number">1210</span>: cannot create <span class="hljs-built_in">document</span>, unique constraint violated]
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