arangodb/Documentation/Examples/AQLEXP_07_explainSingleRulePlans.generated

arangosh&gt; stmt.explain({ optimizer: { rules: [ <span class="hljs-string">"-all"</span>, <span class="hljs-string">"+use-index-range"</span> ] } });
{ 
  <span class="hljs-string">"plan"</span> : { 
    <span class="hljs-string">"nodes"</span> : [ 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"SingletonNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">1</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">1</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">1</span> 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"IndexRangeNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">1</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">9</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">48</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"database"</span> : <span class="hljs-string">"_system"</span>, 
        <span class="hljs-string">"collection"</span> : <span class="hljs-string">"test"</span>, 
        <span class="hljs-string">"outVariable"</span> : { 
          <span class="hljs-string">"id"</span> : <span class="hljs-number">0</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"i"</span> 
        }, 
        <span class="hljs-string">"ranges"</span> : [ 
          [ 
            { 
              <span class="hljs-string">"variable"</span> : <span class="hljs-string">"i"</span>, 
              <span class="hljs-string">"attr"</span> : <span class="hljs-string">"value"</span>, 
              <span class="hljs-string">"lowConst"</span> : { 
                <span class="hljs-string">"bound"</span> : <span class="hljs-number">97</span>, 
                <span class="hljs-string">"include"</span> : <span class="hljs-literal">false</span>, 
                <span class="hljs-string">"isConstant"</span> : <span class="hljs-literal">true</span> 
              }, 
              <span class="hljs-string">"highConst"</span> : { 
                <span class="hljs-string">"include"</span> : <span class="hljs-literal">false</span>, 
                <span class="hljs-string">"isConstant"</span> : <span class="hljs-literal">true</span> 
              }, 
              <span class="hljs-string">"lows"</span> : [ ], 
              <span class="hljs-string">"highs"</span> : [ ], 
              <span class="hljs-string">"valid"</span> : <span class="hljs-literal">true</span>, 
              <span class="hljs-string">"equality"</span> : <span class="hljs-literal">false</span> 
            } 
          ] 
        ], 
        <span class="hljs-string">"index"</span> : { 
          <span class="hljs-string">"type"</span> : <span class="hljs-string">"skiplist"</span>, 
          <span class="hljs-string">"id"</span> : <span class="hljs-string">"502192583"</span>, 
          <span class="hljs-string">"unique"</span> : <span class="hljs-literal">false</span>, 
          <span class="hljs-string">"sparse"</span> : <span class="hljs-literal">false</span>, 
          <span class="hljs-string">"fields"</span> : [ 
            <span class="hljs-string">"value"</span> 
          ] 
        }, 
        <span class="hljs-string">"reverse"</span> : <span class="hljs-literal">false</span> 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"CalculationNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">9</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">3</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">95</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"expression"</span> : { 
          <span class="hljs-string">"type"</span> : <span class="hljs-string">"compare &gt;"</span>, 
          <span class="hljs-string">"subNodes"</span> : [ 
            { 
              <span class="hljs-string">"type"</span> : <span class="hljs-string">"attribute access"</span>, 
              <span class="hljs-string">"name"</span> : <span class="hljs-string">"value"</span>, 
              <span class="hljs-string">"subNodes"</span> : [ 
                { 
                  <span class="hljs-string">"type"</span> : <span class="hljs-string">"reference"</span>, 
                  <span class="hljs-string">"name"</span> : <span class="hljs-string">"i"</span>, 
                  <span class="hljs-string">"id"</span> : <span class="hljs-number">0</span> 
                } 
              ] 
            }, 
            { 
              <span class="hljs-string">"type"</span> : <span class="hljs-string">"value"</span>, 
              <span class="hljs-string">"value"</span> : <span class="hljs-number">97</span> 
            } 
          ] 
        }, 
        <span class="hljs-string">"outVariable"</span> : { 
          <span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"1"</span> 
        }, 
        <span class="hljs-string">"canThrow"</span> : <span class="hljs-literal">false</span>, 
        <span class="hljs-string">"expressionType"</span> : <span class="hljs-string">"simple"</span> 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"FilterNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">3</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">4</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">142</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"inVariable"</span> : { 
          <span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"1"</span> 
        } 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"CalculationNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">4</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">5</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">189</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"expression"</span> : { 
          <span class="hljs-string">"type"</span> : <span class="hljs-string">"attribute access"</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"value"</span>, 
          <span class="hljs-string">"subNodes"</span> : [ 
            { 
              <span class="hljs-string">"type"</span> : <span class="hljs-string">"reference"</span>, 
              <span class="hljs-string">"name"</span> : <span class="hljs-string">"i"</span>, 
              <span class="hljs-string">"id"</span> : <span class="hljs-number">0</span> 
            } 
          ] 
        }, 
        <span class="hljs-string">"outVariable"</span> : { 
          <span class="hljs-string">"id"</span> : <span class="hljs-number">4</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"3"</span> 
        }, 
        <span class="hljs-string">"canThrow"</span> : <span class="hljs-literal">false</span>, 
        <span class="hljs-string">"expressionType"</span> : <span class="hljs-string">"attribute"</span> 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"SortNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">5</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">6</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">369.95693728037276</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"elements"</span> : [ 
          { 
            <span class="hljs-string">"inVariable"</span> : { 
              <span class="hljs-string">"id"</span> : <span class="hljs-number">4</span>, 
              <span class="hljs-string">"name"</span> : <span class="hljs-string">"3"</span> 
            }, 
            <span class="hljs-string">"ascending"</span> : <span class="hljs-literal">true</span> 
          } 
        ], 
        <span class="hljs-string">"stable"</span> : <span class="hljs-literal">false</span> 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"CalculationNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">6</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">7</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">416.95693728037276</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"expression"</span> : { 
          <span class="hljs-string">"type"</span> : <span class="hljs-string">"attribute access"</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"value"</span>, 
          <span class="hljs-string">"subNodes"</span> : [ 
            { 
              <span class="hljs-string">"type"</span> : <span class="hljs-string">"reference"</span>, 
              <span class="hljs-string">"name"</span> : <span class="hljs-string">"i"</span>, 
              <span class="hljs-string">"id"</span> : <span class="hljs-number">0</span> 
            } 
          ] 
        }, 
        <span class="hljs-string">"outVariable"</span> : { 
          <span class="hljs-string">"id"</span> : <span class="hljs-number">6</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"5"</span> 
        }, 
        <span class="hljs-string">"canThrow"</span> : <span class="hljs-literal">false</span>, 
        <span class="hljs-string">"expressionType"</span> : <span class="hljs-string">"attribute"</span> 
      }, 
      { 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"ReturnNode"</span>, 
        <span class="hljs-string">"dependencies"</span> : [ 
          <span class="hljs-number">7</span> 
        ], 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">8</span>, 
        <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">463.95693728037276</span>, 
        <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span>, 
        <span class="hljs-string">"inVariable"</span> : { 
          <span class="hljs-string">"id"</span> : <span class="hljs-number">6</span>, 
          <span class="hljs-string">"name"</span> : <span class="hljs-string">"5"</span> 
        } 
      } 
    ], 
    <span class="hljs-string">"rules"</span> : [ 
      <span class="hljs-string">"use-index-range"</span> 
    ], 
    <span class="hljs-string">"collections"</span> : [ 
      { 
        <span class="hljs-string">"name"</span> : <span class="hljs-string">"test"</span>, 
        <span class="hljs-string">"type"</span> : <span class="hljs-string">"read"</span> 
      } 
    ], 
    <span class="hljs-string">"variables"</span> : [ 
      { 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">6</span>, 
        <span class="hljs-string">"name"</span> : <span class="hljs-string">"5"</span> 
      }, 
      { 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">4</span>, 
        <span class="hljs-string">"name"</span> : <span class="hljs-string">"3"</span> 
      }, 
      { 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">2</span>, 
        <span class="hljs-string">"name"</span> : <span class="hljs-string">"1"</span> 
      }, 
      { 
        <span class="hljs-string">"id"</span> : <span class="hljs-number">0</span>, 
        <span class="hljs-string">"name"</span> : <span class="hljs-string">"i"</span> 
      } 
    ], 
    <span class="hljs-string">"estimatedCost"</span> : <span class="hljs-number">463.95693728037276</span>, 
    <span class="hljs-string">"estimatedNrItems"</span> : <span class="hljs-number">47</span> 
  }, 
  <span class="hljs-string">"warnings"</span> : [ ], 
  <span class="hljs-string">"stats"</span> : { 
    <span class="hljs-string">"rulesExecuted"</span> : <span class="hljs-number">1</span>, 
    <span class="hljs-string">"rulesSkipped"</span> : <span class="hljs-number">22</span>, 
    <span class="hljs-string">"plansCreated"</span> : <span class="hljs-number">1</span> 
  } 
}