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MYSQL QUESTIONS

How can I make this SQL sort by most relevent?
How can I make this SQL sort by most relevent?
I think the issue was by ths following , I have what appears to be a working set of SQL statements, which operate on a drop-down scenario. The first is an all-inclusive AND, where every requested option is matched. Failing that, it goes to the second
TAG : mysql
Date : November 22 2020, 03:01 PM , By : Travis Combs
Database query on month
Database query on month
it fixes the issue How can I query the total number of status per type of the current month and also query the total number of status of the future months to come. Both are separate queries. I looked up on the google but I had a hard time applying it
TAG : mysql
Date : November 22 2020, 03:01 PM , By : zeichi
Select number of matching rows of a particular column in MySQL
Select number of matching rows of a particular column in MySQL
hop of those help? I'm looking to count the number of matching rows for each id in the below table. Although one option is to create another table which keeps track of the count of each category, I would prefer to solve this without creating a second
TAG : mysql
Date : November 22 2020, 03:01 PM , By : Patch3s
How to use rake database commands with password
How to use rake database commands with password
wish helps you I would look at your config/database.yml file to ensure you have your DB username and password set correctly.Edit:
TAG : mysql
Date : November 22 2020, 03:01 PM , By : Nin
If we change a primary key value, why don't we have to change a dependent column value?
If we change a primary key value, why don't we have to change a dependent column value?
hop of those help? TL;DR Item/A being PK (primary key) implies that there's only one Supplier/B value per Item/A value. It doesn't say that there's only one value per table.That video is nonsense. They are suffering from the same misconceptions about
TAG : mysql
Date : November 21 2020, 03:00 PM , By : Badr Chanaa
MySQL - selecting all records except the ones already associated in the relational table
MySQL - selecting all records except the ones already associated in the relational table
This might help you It's been a while since I had to write raw MySQL queries and lost touch a bit. I have a following situation in tables , This is a simple exclusion join:
TAG : mysql
Date : November 21 2020, 03:00 PM , By : Pytboune
Delete Duplicate MySQL rows but keep one
Delete Duplicate MySQL rows but keep one
With these it helps Consider this for your select. then just change the select * to delete A after confirming this gives the records you want to delete.Think of it this way: you want a set of data with the max call duration Grouped by your 3 fields.
TAG : mysql
Date : November 20 2020, 03:01 PM , By : Elijah Wood
ORDER BY does not perform any function
ORDER BY does not perform any function
wish help you to fix your issue You just need to change your ORDER BY clause to order by the rating column:
TAG : mysql
Date : November 20 2020, 03:01 PM , By : sachin
Update column with output of select within the same table in mysql
Update column with output of select within the same table in mysql
fixed the issue. Will look into that further I have a table with a start and end time like so , Assuming that you have the durationMins column already created
TAG : mysql
Date : November 19 2020, 03:01 PM , By : Neco
Set a variable inside case statement in mysql
Set a variable inside case statement in mysql
Hope that helps I have the following scenario , What about this?
TAG : mysql
Date : November 19 2020, 03:01 PM , By : DavidV
MYSQL: How to get rows inserted in the last X hours without querying the entire table
MYSQL: How to get rows inserted in the last X hours without querying the entire table
hope this fix your issue Let's say I have a table with 1 million rows and in the last 2 hours only 5 rows were added (each day different number of rows are being added per hour). , Consider the following table with more than a million rows:
TAG : mysql
Date : November 19 2020, 03:01 PM , By : Rob
AWS RDS MySQL Cross-region replication
AWS RDS MySQL Cross-region replication
will be helpful for those in need I highly recommend switching from RDS MySQL to RDS Aurora, which is MySQL compatible. You won't have to change anything in your code, the database will still appear to be MySQL to any apps that connect to it. Among t
TAG : mysql
Date : November 19 2020, 03:01 PM , By : Oussama Farid
Cannot truncate a table referenced in a foreign key constraint from empty table
Cannot truncate a table referenced in a foreign key constraint from empty table
it fixes the issue TRUNCATE TABLE is equivalent to dropping the table and recreating it as a new table. This would break the foreign key reference.It says in https://dev.mysql.com/doc/refman/5.7/en/truncate-table.html:
TAG : mysql
Date : November 18 2020, 03:01 PM , By : DHRUVA RAJKUMAR
How does SQL determine a character's length in a varchar?
How does SQL determine a character's length in a varchar?
hop of those help? The way UTF-8 works as a variable-length encoding is that the 1-byte characters can only use 7 bits of that byte. If the high bit is 0, then the byte is a 1-byte character (which happens to be encoded in the same way as the 128 ASC
TAG : mysql
Date : November 18 2020, 03:01 PM , By : bayu lmp
MySQL : Getting DB row with exact same data from a vector
MySQL : Getting DB row with exact same data from a vector
I hope this helps . I have this table : , Here's one way (assuming each combination of id and x_id is unique):
TAG : mysql
Date : November 17 2020, 03:01 PM , By : Udipth
Mysql update query with join
Mysql update query with join
I wish did fix the issue. I have two tables table_A table_B fields are , you can use an update with join
TAG : mysql
Date : November 16 2020, 03:01 PM , By : abdellahi agha
Group values that have the same name in one column and same id in other column
Group values that have the same name in one column and same id in other column
I hope this helps . It seems you simply want the plaats and straat per item_id. If so, it suffices to read from tables snm_fields and snm_fields_values only. Using conditional aggregation per item_id:
TAG : mysql
Date : November 16 2020, 03:01 PM , By : nanda puspita rana
Mysql query syntax for conditional inserts
Mysql query syntax for conditional inserts
I think the issue was by ths following , , The standard way to do this is something like:
TAG : mysql
Date : November 16 2020, 03:01 PM , By : IWantToBecomeAWebDev
Is it faster to run an SQL count(*) query in a loop, or try to merge it into the parent query?
Is it faster to run an SQL count(*) query in a loop, or try to merge it into the parent query?
this will help I have an SQL query. , 2) Is merging these two queries together faster?
TAG : mysql
Date : November 15 2020, 03:01 PM , By : Victor Alexandru
MySQL query to fetch product variants
MySQL query to fetch product variants
like below fixes the issue This query should give you the results you want. It effectively creates tables of each attribute (color and size) and JOINs them to the product and variant.
TAG : mysql
Date : November 14 2020, 03:01 PM , By : Jay
Report Reindex taking too long after destroy
Report Reindex taking too long after destroy
Hope this helps The previous answer is correct - instead of reindexing, you should only remove the document in question from Solr, There is no need to reindex all the documents if only one document has changed.In Sunspot you do can do this with Sunsp
TAG : mysql
Date : November 14 2020, 03:01 PM , By : thisTom
MySQL - Adding varchar as a foreign key
MySQL - Adding varchar as a foreign key
wish of those help You can get a more detailed error message by running SHOW ENGINE INNODB STATUS\G and looking at the LATEST FOREIGN KEY ERROR section.In your case, you need to create an index on the parent column (Login.password_encryption) in orde
TAG : mysql
Date : November 13 2020, 03:01 PM , By : Pragati Singh
How to find duplicated entries which has different slug?
How to find duplicated entries which has different slug?
wish helps you I have a MySQL table like this: , One simple method concatenates the slugs together:
TAG : mysql
Date : November 13 2020, 03:01 PM , By : Serhiy Babenchuk
SQL Query comparing values in different rows
SQL Query comparing values in different rows
around this issue I have a table structured as follows: , You can use group by and having:
TAG : mysql
Date : November 13 2020, 03:01 PM , By : Evon Ling
Eloquent giving error but query executes fine in phpmyadmin
Eloquent giving error but query executes fine in phpmyadmin
seems to work fine That's caused by MySQL's strict mode, it is specified in your connection parameters array at config/database.php that's why when you execute it directly at phpMyAdmin it is working, because phpMyAdmin uses different connection para
TAG : mysql
Date : November 12 2020, 03:00 PM , By : nikta
JPQL fetch data from multiple tables
JPQL fetch data from multiple tables
I hope this helps you . I have the following classes. , Yes, it is possible,, it should be like:
TAG : mysql
Date : November 12 2020, 03:00 PM , By : pouya yousefi
MySql Query - Expanding data into new table
MySql Query - Expanding data into new table
may help you . The problem is that you want the total number of combinations, which can be infinite depending on the number of unique Ids per region. If you have X unique IDs, you need to make X number of self joins. Every Join without a where condit
TAG : mysql
Date : November 12 2020, 03:00 PM , By : ravi4974
Official MySQL Docker container not caching queries?
Official MySQL Docker container not caching queries?
it helps some times mysql disabled query caching https://dev.mysql.com/doc/refman/5.7/en/query-cache-configuration.html
TAG : mysql
Date : November 12 2020, 03:00 PM , By : Khalikmohiuddin
MySQL, Count values in every fields in a table
MySQL, Count values in every fields in a table
I hope this helps . Do you have separate columns for each product? product_1, product_2 and so on?You could at least group by product:
TAG : mysql
Date : November 12 2020, 03:00 PM , By : 王兴达
SQL : number different dates within users
SQL : number different dates within users
This might help you I know this question must have been asked before but I can't find it when I am looking around. Basically I have a table with column 1 and 2, and I want to know how I can construct column 3 of this table: , Other then Rownumber she
TAG : mysql
Date : November 11 2020, 03:01 PM , By : shreya Ranpariya
elastic beanstalk docker app cannot connect to mysql
elastic beanstalk docker app cannot connect to mysql
fixed the issue. Will look into that further You may want to check the EC2 Security Group Rules attached to Elastic Beanstalk to allow TCP at port 3306 for MYSQL type.
TAG : mysql
Date : November 11 2020, 03:01 PM , By : li lu
Why am I getting errno: 150 "Foreign key constraint is incorrectly formed"?
Why am I getting errno: 150 "Foreign key constraint is incorrectly formed"?
I wish this helpful for you Your first table name is DoctorsDetails, so your foreign key clause for your second table should be as follows.
TAG : mysql
Date : November 10 2020, 03:01 PM , By : Russ Beecher
Update columns which included in payload
Update columns which included in payload
it helps some times One way to do what you want, that is, have the client send only data that they want to change, is to have one extra "param" type per each "db table" type. So, for example, given your Notification type you would have a Notification
TAG : mysql
Date : November 10 2020, 03:01 PM , By : li qing
MySQL subquery in select
MySQL subquery in select
it fixes the issue Group the second query by user, and then join it with the original query.
TAG : mysql
Date : November 10 2020, 03:01 PM , By : cxj
Get difference in top 2 salary of employee from each department
Get difference in top 2 salary of employee from each department
help you fix your problem I have a simple employee table where i need to find difference between max of two salary in each department with maximum rank. Table columns i have: dept,sal,rank , You can give the following query a try:
TAG : mysql
Date : November 09 2020, 03:01 PM , By : EACB
connecting to database using RMySQL and .my.cnf file in R
connecting to database using RMySQL and .my.cnf file in R
With these it helps I am trying to connect to my company's MySQL database from R, but am not allowed to keep the username and password in my code, and so I created a .my.cnf file. My .my.cnf file looks like this (password, dbname and hostnames adjust
TAG : mysql
Date : November 09 2020, 03:01 PM , By : Hans.cn
How to get data by mysql
How to get data by mysql
I wish this helpful for you I have list player as below. , You could try this code to get your desired results.
TAG : mysql
Date : November 09 2020, 03:01 PM , By : Deepika Sharma
SQL Error [1054] [42S22]: Unknown column ' ' in 'field list'
SQL Error [1054] [42S22]: Unknown column ' ' in 'field list'
To fix this issue This error has been driving me crazy for a few days now , Solved! Character 160 (non-breaking space) is the Culprit
TAG : mysql
Date : November 08 2020, 03:01 PM , By : Aleix Valls
turn c# code into mysql function
turn c# code into mysql function
this will help To query mysql you can use the mysql.data nuget package. You can look up their documentation. I created a nuget to simplify code from any c framework to mysql as well. If you don't mind third party nugets, you can try it out. It is cal
TAG : mysql
Date : November 08 2020, 03:01 PM , By : Robert Quintua
How to loop through and output nested array in Laravel
How to loop through and output nested array in Laravel
To fix the issue you can do If anyone else is struggling with the output of a nested array with groupBy in Laravel the cleanest way I found to do this was as follows. The main loop is the groupBy field and the inner loop is the distinct traits of eac
TAG : mysql
Date : November 08 2020, 03:01 PM , By : Sara Rolando
MySQL TRIM spaces inside text
MySQL TRIM spaces inside text
fixed the issue. Will look into that further I have a DB with users table. One of the fields is cellphone, but is as VARCHAR type. Some users modify their phone with correct and desired behavior, a number without spaces. But other users just add it a
TAG : mysql
Date : November 06 2020, 03:01 PM , By : Dyeh310
Mysql query with multiple selects results in high CPU load
Mysql query with multiple selects results in high CPU load
this will help I'm trying to do a link exchange script and run into a bit of trouble. Each link can be visited by an IP address a number of x times (frequency in links table). Each visit costs a number of credits (spend limit given in limit in links
TAG : mysql
Date : November 06 2020, 03:01 PM , By : Alexei Rusak
Backup DB Django MysqlDump
Backup DB Django MysqlDump
wish of those help Good afternoon, I have an application in Django 1.10 where I need to create a backup of the bd, this copy should be made when the user clicks on a button that will be placed in a template and will download the copy in the Team of t
TAG : mysql
Date : November 06 2020, 03:01 PM , By : Benjamin313
How to select all rows from group, until occurrence of a value
How to select all rows from group, until occurrence of a value
will help you I'm trying to extract all rows from same Group until I hit breakpoint value B. The example data below is ordered virtual table: , Here's a simple solution that uses no subqueries or GROUP BY logic.
TAG : mysql
Date : November 05 2020, 03:01 PM , By : ASHNA KP
Using substring to filter a specific word from a string in MySQL
Using substring to filter a specific word from a string in MySQL
I think the issue was by ths following , If you just want the second word, I'd get the first two words, then from that result, pick the last word. That handles cases where you might have four or more words.
TAG : mysql
Date : November 05 2020, 03:01 PM , By : hbin
Mysql - Alias in Left Outer Join giving error
Mysql - Alias in Left Outer Join giving error
wish helps you The error is saying that the table peruvian_food does not contain a column named idvideo.If we are attempting to reference the expression in the SELECT list that is assigned the alias idvideo, that reference is not allowed in the ON cl
TAG : mysql
Date : November 04 2020, 03:01 PM , By : Avinash Mishra
How use custom alias field from select fields in join?
How use custom alias field from select fields in join?
it helps some times How use custom alias field from select fields in join? , Create the new login in a subquery and join it in:
TAG : mysql
Date : November 04 2020, 03:01 PM , By : Anis Chebelaine
How to sum durations in units of Year, Month and Day in MySQL?
How to sum durations in units of Year, Month and Day in MySQL?
wish help you to fix your issue I have a table duration:
TAG : mysql
Date : November 04 2020, 03:01 PM , By : Alaa Awad
Is it possible to assign the values from select exist query in MySQL to multiple variables in a stored procedure?
Is it possible to assign the values from select exist query in MySQL to multiple variables in a stored procedure?
I hope this helps . set sender_id = (Select EXISTS(SELECT 1 FROM account WHERE account_id = p_sender_id)); , You could do something like:
TAG : mysql
Date : November 04 2020, 03:01 PM , By : oldspark
How does mysql resolves conflict when same option is configured twice?
How does mysql resolves conflict when same option is configured twice?
it fixes the issue https://dev.mysql.com/doc/refman/5.7/en/option-files.html says in part:
TAG : mysql
Date : November 03 2020, 03:01 PM , By : Timothy Karani
Most efficient way to clone an AWS RDS database?
Most efficient way to clone an AWS RDS database?
This might help you Consider migrating to RDS Aurora for MySQL.It supports native copy-on-write clones of the entire database (meaning server instance, not schema) without the need to make an actual "copy."
TAG : mysql
Date : November 03 2020, 03:01 PM , By : Akashkumar Jha
MySQL join columns and count values in the same table
MySQL join columns and count values in the same table
around this issue I have a following table , Use Union All with grouping :
TAG : mysql
Date : November 02 2020, 03:01 PM , By : DRD
why xor keyword not supported in mysql?
why xor keyword not supported in mysql?
will help you Although XOR is not part of the standard SQL syntax, by its definition:
TAG : mysql
Date : November 02 2020, 03:01 PM , By : user2171730
Multiple Fields with a GroupBy Statement in Laravel
Multiple Fields with a GroupBy Statement in Laravel
With these it helps When you use groupBy() of Laravel Illuminate\Support\Collection it gives you a deeper nested arrays/objects, so that you need to do more than one map on the result in order to unveil the real models (or arrays).I will demo this wi
TAG : mysql
Date : November 02 2020, 03:01 PM , By : Akachat Wahid
How to make an efficient Count of rows from another table (join)
How to make an efficient Count of rows from another table (join)
it helps some times You can rephrase your query to use a join instead of a correlated subquery:
TAG : mysql
Date : November 02 2020, 03:01 PM , By : Alex Oz
missing default value for NOT NULL TIMESTAMP?
missing default value for NOT NULL TIMESTAMP?
Any of those help It sounds to me like your MySQL server is insisting you provide a default value for your date_fin column. Try this.
TAG : mysql
Date : November 01 2020, 03:01 PM , By : Xorib
Exclusive Lock (Row Level) - MySql need an example
Exclusive Lock (Row Level) - MySql need an example
it fixes the issue I want to lock a specific row in MySQL (InnoDB), so that specific row can't be read by another connection.
TAG : mysql
Date : November 01 2020, 03:01 PM , By : Nor Rabiatul Adawiya
MySQL SELECT DISTINCT how to join some corresponding columns to query result
MySQL SELECT DISTINCT how to join some corresponding columns to query result
I hope this helps . In case of duplication, if you want to display the first(original) record with the same values of company city (i.e. like here you want to show id=1 not id=4) then following query should work:
TAG : mysql
Date : November 01 2020, 03:01 PM , By : priyanka dalvi
Can't change lower-case-table-names on MariaDB
Can't change lower-case-table-names on MariaDB
I think the issue was by ths following , I tried to upload my WordPress on AWS EC2 Server, but when I import my database MariaDB is changing my table name with only lower case character , I just restarted completely my AWS EC2 server and now it's wor
TAG : mysql
Date : October 31 2020, 04:00 PM , By : user2171720
Order by one column and then by another
Order by one column and then by another
I wish this help you This is my table: , You can try to do this:
TAG : mysql
Date : October 31 2020, 04:00 PM , By : Jeremy_B

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