hamiltonsalazar opened a new issue #2976:
URL: https://github.com/apache/couchdb/issues/2976


   [NOTE]: # ( ^^ Provide a general summary of the issue in the title above. ^^ 
)
   
   ## Description
   
   I'm putting on practice the CouchDB documentation and I read about 
["Implicit 
Operators"](https://docs.couchdb.org/en/stable/api/database/find.html#implicit-operators),
 but COUCHD ignore my firts condiction when i send two condictions and it 
should use the implicit `$and` operartor
   
   
   [NOTE]: # ( Describe the problem you're encountering. )
   [TIP]:  # ( Do NOT give us access or passwords to your actual CouchDB! )
   
   ## Current Behavior
   
   I use the next query:
   ```
   {     
       "selector" : {        
           "age": {
               "$lte": 30
           },
           "age": {
               "$gte": 25
           }
       },    
       "fields": [   "name",   "age",    "_id"     ], 
       "sort": [
           {
               "age": "desc"
           }   
       ]
   }
   ```
   
   But COUCHDB is ignoring my firts condition:
   
   > {"docs":[
   {"name":"Erick","age":70,"_id":"9578"},
   {"name":"Lucas","age":70,"_id":"9269"},
   {"name":"Valeria","age":70,"_id":"9016"},
   {"name":"Pablo","age":70,"_id":"8963"},
   {"name":"Lucas","age":70,"_id":"8592"},
   {"name":"Olivia","age":70,"_id":"8557"},
   {"name":"Paula","age":70,"_id":"7961"},
   {"name":"Adrián","age":70,"_id":"7653"},
   {"name":"Isla","age":70,"_id":"7615"},
   {"name":"Javier","age":70,"_id":"6625"},
   {"name":"Daniel","age":70,"_id":"640"},
   {"name":"Alice","age":70,"_id":"6318"},
   {"name":"Chloe","age":70,"_id":"6118"},
   {"name":"Benjamín","age":70,"_id":"5713"},
   {"name":"Adeline","age":70,"_id":"5674"},
   {"name":"David","age":70,"_id":"5572"},
   {"name":"Nicolás","age":70,"_id":"5289"},
   {"name":"Thiago","age":70,"_id":"5232"},
   {"name":"Julián","age":70,"_id":"5137"},
   {"name":"Dulce","age":70,"_id":"4738"},
   {"name":"Valeria","age":70,"_id":"4699"},
   {"name":"Sofía","age":70,"_id":"4389"},
   {"name":"Matías","age":70,"_id":"4323"},
   {"name":"Evelyn","age":70,"_id":"4248"},
   {"name":"Carlos","age":70,"_id":"4192"}
   ],
   "bookmark": 
"g2wAAAACaAJkAA5zdGFydGtleV9kb2NpZG0AAAAENDE5MmgCZAAIc3RhcnRrZXlrAAFGag"}
   
   
   And changing the condictions: 
   ```
   {     
       "selector" : {    
           "age": {
               "$gte": 25
           },
           "age": {
               "$lte": 30
           }
       },    
       "fields": [   "name",   "age",    "_id"     ], 
       "sort": [
           {
               "age": "asc"
           }   
       ]
   }
   ```
    
   CouchDB also ignored my firts condiction: 
   
   > {"docs":[
   {"name":"Amalia","age":18,"_id":"5642"},
   {"name":"Evelyn","age":18,"_id":"6528"},
   {"name":"Eleanor","age":18,"_id":"7476"},
   {"name":"Dulce","age":18,"_id":"8990"},
   {"name":"Valentín","age":18,"_id":"9755"},
   {"name":"Valeria","age":19,"_id":"1016"},
   {"name":"Jorge","age":19,"_id":"1164"},
   {"name":"Evelyn","age":19,"_id":"1172"},
   {"name":"Erick","age":19,"_id":"1246"},
   {"name":"Cora","age":19,"_id":"1385"},
   {"name":"Pablo","age":19,"_id":"146"},
   {"name":"Samantha","age":19,"_id":"1633"},
   {"name":"Marcos","age":19,"_id":"1645"},
   {"name":"Regina","age":19,"_id":"1758"},
   {"name":"Charlotte","age":19,"_id":"1797"},
   {"name":"Marcos","age":19,"_id":"21"},
   {"name":"Álvaro","age":19,"_id":"2271"},
   {"name":"Eleanor","age":19,"_id":"2283"},
   {"name":"Thiago","age":19,"_id":"230"},
   {"name":"Adrián","age":19,"_id":"2401"},
   {"name":"Samantha","age":19,"_id":"2681"},
   {"name":"Ava","age":19,"_id":"2863"},
   {"name":"Julia","age":19,"_id":"287"},
   {"name":"Daniela","age":19,"_id":"2912"},
   {"name":"Pablo","age":19,"_id":"296"}
   ],
   "bookmark": 
"g2wAAAACaAJkAA5zdGFydGtleV9kb2NpZG0AAAADMjk2aAJkAAhzdGFydGtleWsAARNq"}
   
   
   [NOTE]: # ( Include commands to reproduce, if possible. curl is preferred. )
   
   ## Expected Behaviour
   
   COUCHD should response with:
   
   > {"docs":[
   > {"name":"Cora","age":25,"_id":"104"},
   > {"name":"Pablo","age":25,"_id":"11"},
   > {"name":"Daniela","age":25,"_id":"1192"},
   > {"name":"Sim├│n","age":25,"_id":"1305"},
   > {"name":"Amalia","age":25,"_id":"1358"},
   > {"name":"Benjamín","age":25,"_id":"1488"},
   > {"name":"Cora","age":25,"_id":"1599"},
   > {"name":"Pablo","age":25,"_id":"1722"},
   > {"name":"Benjamín","age":25,"_id":"1781"},
   > {"name":"Mario","age":25,"_id":"1798"},
   > {"name":"Elizabeth","age":25,"_id":"2"},
   > {"name":"Daniel","age":25,"_id":"2060"},
   > {"name":"Adrián","age":25,"_id":"209"},
   > {"name":"Chloe","age":25,"_id":"2173"},
   > {"name":"Elizabeth","age":25,"_id":"2211"},
   > {"name":"Álvaro","age":25,"_id":"2237"},
   > {"name":"Samantha","age":25,"_id":"2281"},
   > {"name":"Marcos","age":25,"_id":"2334"},
   > {"name":"Iván","age":25,"_id":"2409"},
   > {"name":"Benjamín","age":25,"_id":"2523"},
   > {"name":"Matías","age":25,"_id":"2772"},
   > {"name":"Eleanor","age":25,"_id":"2781"},
   > {"name":"Valentín","age":25,"_id":"2926"},
   > {"name":"Paula","age":25,"_id":"2927"},
   > {"name":"Mario","age":25,"_id":"2958"}
   > ],
   > "bookmark": 
"g2wAAAACaAJkAA5zdGFydGtleV9kb2NpZG0AAAAEMjk1OGgCZAAIc3RhcnRrZXlrAAEZag"}
   
   
   But I only can get this with Explicit Operators:
   ```
   {     
       "selector" : {    
           "$and": [
               {
                   "age": {        
                       "$gte": 25    
                   }
               },    
               {
                   "age": {        
                       "$lte": 30    
                   }
               } 
           ]
       },    
       "fields": [   "name",   "age",    "_id"     ], 
       "sort": [
           {
               "age": "asc"
           }   
       ]
   }
   ```
   
   
   ## Your Environment
   
   [TIP]:  # ( Include as many relevant details about your environment as 
possible. )
   [TIP]:  # ( You can paste the output of curl http://YOUR-COUCHDB:5984/ here. 
)
   
   * CouchDB version used: 3.1.0
   * Operating system and version: Windows 10 Pro 1909
   


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