Mysql Sql Not Returning Any Results Stack Overflow So to get the correct results, you need to apply an aggregate function to instruct sql server to sum up the count column. this should be the query (but this query is not good enough either, more later on this):. First, ignore the key len of explain, that value only has a meaning in the context of a btree index, so it will always be 0 for a fulltext scan, regardless of the actual size of the index column.
Mysql Sql Not Returning Any Results Stack Overflow The query returns the result within 1 minute if i run it on ms sql server but when i try to do the same on mysql workbench (with the community server) it keeps going on for hours. What i am trying to achieve is to show which users have been active within the last 10 seconds or any other time interval. however when i run the query i get no results, despite knowing that i have got updates in my table between the specified time range. We had a very strange encounter that all of our queries that uses an indexed column in the select wasn't returning any results. on the other hand, if we do select * or on any other non indexed column then we get the expected results. Learn how to return a value even when there are no results in a mysql query. this guide provides practical examples and explanations.
Mysql Sql Not Returning Any Results Stack Overflow We had a very strange encounter that all of our queries that uses an indexed column in the select wasn't returning any results. on the other hand, if we do select * or on any other non indexed column then we get the expected results. Learn how to return a value even when there are no results in a mysql query. this guide provides practical examples and explanations. I'm trying to return a list of persons who are neither students or instructors. here are the tables (they are all populated with values that fit all criteria): create table person ( name char (20), id char (9) not null, address char (30), dob date, primary key (id) ); create table instructor ( instructorid char (9) not null references person (id),. For other type of sql statements, insert, update, delete, drop, etc, mysql query () returns true on success or false on error. the returned result resource should be passed to mysql fetch array (), and other functions for dealing with result tables, to access the returned data. It works perfectly, but then randomly return 0 results, for a few seconds and then continues working. i could be wrong but i think i have narrowed the problem down to the 'awarded' column, as other queries of the same database seem to work without this issue. Returns 0 results in what context? are you querying it from php, or is it not returning rows from the mysql command line client either? if in php, make sure you're checking mysql error().
Google Bigquery Sql Where Function Not Returning Any Results Stack I'm trying to return a list of persons who are neither students or instructors. here are the tables (they are all populated with values that fit all criteria): create table person ( name char (20), id char (9) not null, address char (30), dob date, primary key (id) ); create table instructor ( instructorid char (9) not null references person (id),. For other type of sql statements, insert, update, delete, drop, etc, mysql query () returns true on success or false on error. the returned result resource should be passed to mysql fetch array (), and other functions for dealing with result tables, to access the returned data. It works perfectly, but then randomly return 0 results, for a few seconds and then continues working. i could be wrong but i think i have narrowed the problem down to the 'awarded' column, as other queries of the same database seem to work without this issue. Returns 0 results in what context? are you querying it from php, or is it not returning rows from the mysql command line client either? if in php, make sure you're checking mysql error().
Mysql Sql Between Not Returning All Results Stack Overflow It works perfectly, but then randomly return 0 results, for a few seconds and then continues working. i could be wrong but i think i have narrowed the problem down to the 'awarded' column, as other queries of the same database seem to work without this issue. Returns 0 results in what context? are you querying it from php, or is it not returning rows from the mysql command line client either? if in php, make sure you're checking mysql error().
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