mirror of https://gitee.com/bigwinds/arangodb
136 lines
8.2 KiB
Plaintext
136 lines
8.2 KiB
Plaintext
arangosh> stmt.explain({ <span class="hljs-attr">optimizer</span>: {
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........> rules: [ <span class="hljs-string">"-all"</span>, <span class="hljs-string">"+remove-redundant-calculations"</span> ] } });
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{
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<span class="hljs-string">"plan"</span> : {
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<span class="hljs-string">"nodes"</span> : [
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"SingletonNode"</span>,
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<span class="hljs-string">"dependencies"</span> : [ ],
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<span class="hljs-string">"id"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span>
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},
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"EnumerateCollectionNode"</span>,
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<span class="hljs-string">"dependencies"</span> : [
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<span class="hljs-number">1</span>
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],
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<span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>,
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<span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">3</span>,
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<span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"random"</span> : <span class="hljs-literal">false</span>,
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<span class="hljs-string">"indexHint"</span> : {
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<span class="hljs-string">"forced"</span> : <span class="hljs-literal">false</span>,
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"none"</span>
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},
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<span class="hljs-string">"outVariable"</span> : {
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<span class="hljs-string">"id"</span> : <span class="hljs-number">0</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"user"</span>
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},
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<span class="hljs-string">"projections"</span> : [ ],
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<span class="hljs-string">"producesResult"</span> : <span class="hljs-literal">true</span>,
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<span class="hljs-string">"database"</span> : <span class="hljs-string">"_system"</span>,
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<span class="hljs-string">"collection"</span> : <span class="hljs-string">"_users"</span>,
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<span class="hljs-string">"satellite"</span> : <span class="hljs-literal">false</span>
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},
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"CalculationNode"</span>,
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<span class="hljs-string">"dependencies"</span> : [
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<span class="hljs-number">2</span>
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],
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<span class="hljs-string">"id"</span> : <span class="hljs-number">3</span>,
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<span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">4</span>,
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<span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"expression"</span> : {
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"compare =="</span>,
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<span class="hljs-string">"typeID"</span> : <span class="hljs-number">25</span>,
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<span class="hljs-string">"excludesNull"</span> : <span class="hljs-literal">false</span>,
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<span class="hljs-string">"subNodes"</span> : [
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"attribute access"</span>,
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<span class="hljs-string">"typeID"</span> : <span class="hljs-number">35</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"user"</span>,
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<span class="hljs-string">"subNodes"</span> : [
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"reference"</span>,
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<span class="hljs-string">"typeID"</span> : <span class="hljs-number">45</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"user"</span>,
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<span class="hljs-string">"id"</span> : <span class="hljs-number">0</span>
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}
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]
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},
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"value"</span>,
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<span class="hljs-string">"typeID"</span> : <span class="hljs-number">40</span>,
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<span class="hljs-string">"value"</span> : <span class="hljs-string">"root"</span>,
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<span class="hljs-string">"vType"</span> : <span class="hljs-string">"string"</span>,
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<span class="hljs-string">"vTypeID"</span> : <span class="hljs-number">4</span>
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}
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]
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},
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<span class="hljs-string">"outVariable"</span> : {
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<span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"1"</span>
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},
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<span class="hljs-string">"canThrow"</span> : <span class="hljs-literal">false</span>,
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<span class="hljs-string">"expressionType"</span> : <span class="hljs-string">"simple"</span>
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},
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"FilterNode"</span>,
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<span class="hljs-string">"dependencies"</span> : [
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<span class="hljs-number">3</span>
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],
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<span class="hljs-string">"id"</span> : <span class="hljs-number">4</span>,
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<span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">5</span>,
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<span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"inVariable"</span> : {
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<span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"1"</span>
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}
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},
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{
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"ReturnNode"</span>,
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<span class="hljs-string">"dependencies"</span> : [
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<span class="hljs-number">4</span>
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],
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<span class="hljs-string">"id"</span> : <span class="hljs-number">5</span>,
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<span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">6</span>,
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<span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"inVariable"</span> : {
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<span class="hljs-string">"id"</span> : <span class="hljs-number">0</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"user"</span>
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},
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<span class="hljs-string">"count"</span> : <span class="hljs-literal">true</span>
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}
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],
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<span class="hljs-string">"rules"</span> : [ ],
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<span class="hljs-string">"collections"</span> : [
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{
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"_users"</span>,
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<span class="hljs-string">"type"</span> : <span class="hljs-string">"read"</span>
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}
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],
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<span class="hljs-string">"variables"</span> : [
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{
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<span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"1"</span>
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},
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{
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<span class="hljs-string">"id"</span> : <span class="hljs-number">0</span>,
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<span class="hljs-string">"name"</span> : <span class="hljs-string">"user"</span>
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}
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],
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<span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">6</span>,
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<span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span>,
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<span class="hljs-string">"initialize"</span> : <span class="hljs-literal">true</span>,
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<span class="hljs-string">"isModificationQuery"</span> : <span class="hljs-literal">false</span>
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},
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<span class="hljs-string">"warnings"</span> : [ ],
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<span class="hljs-string">"stats"</span> : {
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<span class="hljs-string">"rulesExecuted"</span> : <span class="hljs-number">3</span>,
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<span class="hljs-string">"rulesSkipped"</span> : <span class="hljs-number">33</span>,
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<span class="hljs-string">"plansCreated"</span> : <span class="hljs-number">1</span>
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},
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<span class="hljs-string">"cacheable"</span> : <span class="hljs-literal">true</span>
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}
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