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Query a specific GET field?


Query a specific GET field?

By : user3045263
Date : December 01 2020, 04:52 PM
Does that help How can I get just a single field (called "name") from an entry in my AppSync/Dynamo table, for a given "id:"? This is instead of getting the entire row of fields for that 'id' returned to me. I only need the single field. , Try below
code :
export const getUser = `query GetUsers($id: ID!) {
  getUsers(id: $id) {name}
}`

const userName = (await API.graphql(graphqlOperation(getUsers, {id: "xxx"}))).getUser.data.name


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Solr: How can I improve the performance of a filter query (for a specific value, not a range query) on a numeric field?

Solr: How can I improve the performance of a filter query (for a specific value, not a range query) on a numeric field?


By : Casey
Date : March 29 2020, 07:55 AM
I hope this helps . TrieIntField with a precisionStep is optimized for range queries. As you're only searching for a specific value your field type is optimal.
Have you looked at autowarming queries? These run whenever a new IndexSearcher is being created (on startup, on an index commit for example), so that it becomes available with some cache already in place. Depending on your requirements, you can also set useColdSearcher flag to true, so that the new Searcher is only available when the cache has been warmed. For more details have a look here: https://cwiki.apache.org/confluence/display/solr/Query+Settings+in+SolrConfig#QuerySettingsinSolrConfig-Query-RelatedListeners
MySQL - How to find specific field with comparing two field in select query

MySQL - How to find specific field with comparing two field in select query


By : user3142912
Date : March 29 2020, 07:55 AM
To fix the issue you can do I have these two tables: , Try this:
code :
SELECT DISTINCT sub . * , t2.plan_name, t2.plan_month, t1.plan_name, t2.parent_id
FROM subscription_plan AS t1
LEFT JOIN subscription_plan AS t2 ON t2.parent_id = t1.subscription_plan_id
JOIN subscription AS sub ON t2.subscription_plan_id = sub.subscription_plan_id
WHERE t2.plan_name IS NOT NULL
AND sub.user_id =71
AND sub.property_id =981
ORDER BY sub.subscription_plan_id ASC 
How do you check a field in a query for specific values if and only if another field had a specific value?

How do you check a field in a query for specific values if and only if another field had a specific value?


By : Vivek Vishnoi
Date : March 29 2020, 07:55 AM
wish help you to fix your issue The query below returns this result set from your sample data when I supply 7/20/2015 as the parameter value:
code :
item
----
B
PARAMETERS pTarget DateTime;
SELECT j.item
FROM
    dbo_job AS j
    LEFT JOIN
    (
        SELECT [item]
        FROM dbo_job
        WHERE job_date>=DateAdd('d', -28, [pTarget]) And job_date<[pTarget]
        GROUP BY [item]
    ) AS sub
    ON j.item = sub.item
WHERE j.job_date=[pTarget] AND sub.item Is Null
GROUP BY j.item;
solr field specific query returns exact match for the whole field

solr field specific query returns exact match for the whole field


By : Gareth
Date : March 29 2020, 07:55 AM
Any of those help I'm just getting started with solr but thought this is somewhat counterintuitive. Please help. , You can use this as a fieldType.
code :
<fieldType name="strings" class="solr.TextField" sortMissingLast="true" omitNorms="true">
    <analyzer>
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <!--  <tokenizer class="solr.KeywordTokenizerFactory"/>-->
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
    </analyzer>
</fieldType>
SQL query to get number of times a field repeats for another specific field

SQL query to get number of times a field repeats for another specific field


By : Anonymous
Date : March 29 2020, 07:55 AM
Hope this helps Let's say I have two fields in a table. For the purpose of discussion let's say the fields are first name and last name. I want to know how many times the first name shows up listed next to the same last name. Assuming the last name column is unique, how do I figure out how many times each first name exists for each last name? , Simple aggregation?
code :
select last_name, first_name, count(*)
from myTable
group by last_name, first_name
order by  last_name, first_name
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