mongodb template query data is the time difference of field 1 minus field 2 by more than 30 minutes, and it is data within three days. Fields 1 and 2 are timestamps, how to write
mongodb template query data is the time difference of field 1 minus field 2 by more than 30 minutes, and it is data within three days. Fields 1 and 2 are timestamps, how to write
data stores a field type (as an enumeration). When querying, it needs to be processed separately by using ifelse or switch, for example, 1 is converted to normal. I ve implemented it with the MongoDB statement, but how do I handle it in the springboot ...
in java, mongodb is operated by multiple threads. uses mongoTemplate as an operation. then, there are more than five hundred threads to operate on the mongodb. then, it was found that none of the 500-plus threads had to create a new mongodb connection...
I queried a collection of coordinates within a region and found that when the range was particularly large (> 300km), I looked up some coordinates outside the range. Is this because the radius error is too large, or is there something wrong with the co...
I use the following code on Robo 3T (a mongodbGUI software) db.getCollection( json ).find({"time":{$gte:1528771648859,$lte:1528771698869}},{"data":{$elemMatch :{"deviceid":456789123}}}) can get the results I want, but I...
2018-07-05 16 virtual 17 dispatcherServlet 02.005 ERROR 28380-[nio-9002-exec-4] o.a.c.c.C. [ ]. [dispatcherServlet]: Servlet.service () for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested excepti...
there are two tables in the database with different names and the same data format. if I want to check the data in both tables that meet the criteria at the same time, except that I check them separately and return a collection. Is there any other way...
1 you can output query information during unit test, use swagger2 to test the following errors, debug can also output results normally. ...
{ "_id" : { "$oid" : "5b8e1d485d30a6499820cfc5" }, "id" : 5, "lessonCount" : 5, "userCount" : 6, "users" : [{ "phone" : "1301111000", &q...
there are two record: entries as follows query condition is type=gz--> detai is a List, there is an obj, query condition in this obj, and this filed is a List, depending on whether the value in it conforms to . query the entire document of all type ...
there is a function that often needs to query data according to the factory id. Which of the following designs is more reasonable? or is the efficiency the same? scenario 1: { { "_id" : 1, "product" : "...
query conditions are composed of String and List, such as: (List < String > id, String location, String status,.) The exact number of fields in the parameter is not certain. There may be more than one . how to implement this situation? you d better ...
problem description there are the following collection,. I need to group statistics according to the name quote.sign field, fetch the latest record according to the last_updated time, or extract the data in the existing format according to the maximum...