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Insert into mysql table only if those values are not in table
it helps some times Create a constraint that demands NAME and Age to be unique in the table.
TAG :mysql
Date : September 23 2020, 09:00 PM , By : Joey Fisher
Distribute a certain value based or Ranking in Redshift
I think the issue was by ths following , $20 cap imposed at an order level Calculating your applicable discount should simply be least(Order_Value * 0.1, 20), i.e. your order value * 10% capped at 20.
TAG :mysql
Date : September 23 2020, 09:00 PM , By : CamelCase
Grafana select query throwing error - "Found no column named time or time_sec"
I wish did fix the issue. This happens when you are using a "Graph" visualisation, with X-Axis mode set to "Time" like this, because grafana is trying to find what time series to map the graph against:
TAG :mysql
Date : September 23 2020, 07:00 PM , By : The Distance
Get result of 2 queries with 1 query
I wish this help you I have 2 following queries in the same table transactions. , You can use case statement to the the unPaid column.
TAG :mysql
Date : September 23 2020, 05:00 PM , By : Michael Safo Gyimah
Do all subqueries in CASE..WHEN get executed, even if only one condition is met?
wish helps you I find that this is an interesting question.Explain plans cannot really tell you the answer, since they are static, while condition evaluation occurs at runtime.
TAG :mysql
Date : September 23 2020, 05:00 PM , By : vorsfellung
Select all Rows except first row
it helps some times I can't seem to get this output of selecting all except the first one to work with "OFFSET". This is the one suggested as I googled , Your error indicates that you use
TAG :mysql
Date : September 23 2020, 04:00 PM , By : Ramesh
SQL max number of records
I hope this helps . You would typically use a before insert trigger for this, that raises an error if the number of records for a patient reached the limit and a new insert is attempted:
TAG :mysql
Date : September 23 2020, 02:00 PM , By : Fachri
My SQL indexing on int field doesn't work
I wish did fix the issue. Just because you create an index, does not mean MySQL will always use it. According to the docs, here are several reasons why it may choose to use a full table scan over the index:
TAG :mysql
Date : September 23 2020, 02:00 PM , By : Eric
Query based on the combination of two columns in Rails Active Record
I wish this helpful for you I have a user model that has two columns i.e name and label. Combination of these columns is given in an array-like below , You can generate the placeholders for the array of arrays.
TAG :mysql
Date : September 23 2020, 01:00 PM , By : Jason martinez
Could someone help me clean this up? (Beginner, SQL)
I hope this helps you . In MySQL, you can use the REGEXP operator:
TAG :mysql
Date : September 23 2020, 07:00 AM , By : Alks Kikosh
how to do row calculation in SQL
it helps some times guys. I am really new to SQL and coding.
TAG :mysql
Date : September 23 2020, 05:00 AM , By : Burrito_007
Left and Right Join Giving the same output
fixed the issue. Will look into that further That's because your data are complete. Every student has an address. If you remove one or more addresses, results will be different.
TAG :mysql
Date : September 23 2020, 03:00 AM , By : 浦海蓓
MySQL Workbench can only connect to localhost:3306
Hope this helps I am currently running MySQL Workbench on Elementary OS (based on Ubuntu 18.04). When I connect to localhost:3306 using root access it connects to MySQL Server but when I try to connect to other ports (Specifically Port 3307 since my
TAG :mysql
Date : September 23 2020, 01:00 AM , By : soham16 kamat
Why is MySQL date between throwing an error?
I wish this help you Can this query be possible in MySQL, I have tried different versions of MySQL but did not work, same query works in postgresSQL. , the right syntax is:
TAG :mysql
Date : September 22 2020, 09:00 PM , By : Nelson Elyvenis
How to avoid white spaces being created while importing data from csv file to MySQL table
I hope this helps you . Usually, I advocate loading data into staging tables where all columns are strings and then doing to cleaning in the database.However, load data infile does have some nice features for cleaning data. If your extra characters a
TAG :mysql
Date : September 22 2020, 07:00 PM , By : Maxime Brd
SQL query for price
With these it helps you want the lead() and lag() functions (one looks to the row above, and the other to the row below). (Here's an example)For instance:
TAG :mysql
Date : September 22 2020, 07:00 PM , By : Breta Ionut
SQL for each row corresponsing to every other row
This might help you I have a table which is like this: , A normalised schema might look something like this...
TAG :mysql
Date : September 22 2020, 02:00 PM , By : Deepika S R
Retrieve specific data using JSON decode Laravel
help you fix your problem I will recommend using Resources. It really very helpful laravel feature. Check it out. It is a reusable class. You call anywhere and anytime.
TAG :mysql
Date : September 22 2020, 02:00 PM , By : user6089948
How to create database schema in such a way that one employee can be part of one department only?
I wish this help you How to create database schema in such a way that one employee can be part of one department only. There are three tables of a company "Employee table" "Department table" and "Region table". , You do this by having a department_id
TAG :mysql
Date : September 22 2020, 01:00 PM , By : Saints Lady
Insert data in table using two or more tables
I wish did fix the issue. INSERT...SELECT syntax is what you're looking for (instead of INSERT...VALUES, which is limited to single values per column in each value list). That allows you to select the data directly from the table(s) concerned, using
TAG :mysql
Date : September 22 2020, 01:00 PM , By : Will Hurst
Handling GET request with axios and express
wish help you to fix your issue Add the express host in package.json of react app "proxy": "http://localhost:3001/"app.js
TAG :mysql
Date : September 22 2020, 10:00 AM , By : DisplayName=
Why SQL does not throw error when I try to sort based on same column twice?
I wish did fix the issue. Your question is "Why doesn't MySQL (or any other database) returns a warning or error when there are redundant ORDER BY keys?"When writing a language or compiler, the designers have to make decisions on what to work on.
TAG :mysql
Date : September 22 2020, 08:00 AM , By : Anonymous
MySQL to return unique rows of members who have visited one page but not in another
around this issue The database stores the "email" and "page" of every "visit". I want to find the emails of the people who have visited the "checkout" page , possibly many times, but have NOT visited the "Thankyou" page. i.e abandoned carts; they got
TAG :mysql
Date : September 22 2020, 06:00 AM , By : Shonn Neal
MySQL on Compute Engine did not shutdown correctly due to maintenance
wish help you to fix your issue Think you are looking for shutdown scripts. Using which you request to wait about 90 seconds before GCE will forcibly terminates your instance. You set your shutdown script instance metadata
TAG :mysql
Date : September 22 2020, 04:00 AM , By : Łukasz Lech
Querying a database record from flowfile content to retrive data using apache-nifi
seems to work fine My scenario is as followed. From one process I retrieve data from a table. , use below:
TAG :mysql
Date : September 22 2020, 04:00 AM , By : GodisaMpho
Artificially duplicate results in mysql
I wish this help you I have a table like so , Use UNION ALL.
TAG :mysql
Date : September 22 2020, 03:00 AM , By : Rogi
Best MySQL primary key and table creation
I wish this help you The "ideal" primary key will satisfy several important properties:unique - no two (or more) rows have the same value
TAG :mysql
Date : September 22 2020, 01:00 AM , By : Victor Enn
Get latest records with id for each group with latest date-time not id - mysql
I hope this helps you . My requirement is to get id based on latest frame (based on date-time) is inserted with group by vehicle id.
TAG :mysql
Date : September 21 2020, 06:00 PM , By : V.Dilip Raju
Select two values ​from the same reference
I wish did fix the issue. I have this table A , You can use conditional aggregation:
TAG :mysql
Date : September 21 2020, 04:00 PM , By : kcop
Alternative of Foreign Key in RDBMS
I wish did fix the issue. You don't have to define foreign keys in a MySQL database. In a query, you can use joins to define how relations should be fed into your query's result set.There are good reasons to define foreign keys, though. Some of these
TAG :mysql
Date : September 21 2020, 04:00 PM , By : natalia ferreira
I am new to SQL and i have trouble selecting from database
it helps some times You can use CASE with SUM to get the output. CASE is to filter the specific value from the column sem_type. SUM with GROUP BY is to sum up all the values and produce a unique result.
TAG :mysql
Date : September 21 2020, 10:00 AM , By : Akshay Kaore
Differences regarding neo4j and mySQL
it should still fix some issue The analogue to your empty table example is literally a label (e.g. A) for which there are no nodes.If you wanted to ensure that the attribute idA existed on every A table node that is created in your database you could
TAG :mysql
Date : September 21 2020, 09:00 AM , By : ImpKnif
how to pass multiple values for WHERE clause as single argument
To fix the issue you can do I am looking to update data of my table based on the query result. , Where clause support IN to support multiple values
TAG :mysql
Date : September 21 2020, 08:00 AM , By : Lajith
How to get rows by a list of ids including repeated ids?
may help you . You need to create a derived table containing those id values and then JOIN that to your table1 to generate rows for each instance of a value in your list. Those rows can then be summed:
TAG :mysql
Date : September 21 2020, 06:00 AM , By : h s
Foreign key for a combination of columns
I wish this help you Order matters in foreign key constraints, so no, you cannot achieve that with foreign key constraints.But you could rule that there has to be an order in relations, e.g. id1 < id2 or (id1
TAG :mysql
Date : September 21 2020, 05:00 AM , By : Enayat Ansari
How to update a column to match data from another column in the same table
To fix this issue I'm trying to get a query going that would update the parent_id row to reflect the corresponding username that possesses the same member_id as the parent_id. , You can use this, using a UPDATE with INNER JOIN:
TAG :mysql
Date : September 21 2020, 01:00 AM , By : user6092483
Counting events before a specific event
wish helps you Let's say, I have a table with the following columns: , I went to SQL Fiddle and ran the test via MS SQL engine.
TAG :mysql
Date : September 20 2020, 10:00 PM , By : Ross Kan
Query to split even and odd numbers, with GROUP_CONCAT
may help you . I have a query that finds housenumbers per street in a specific postcode with four numbers: , You could use CASE expression:
TAG :mysql
Date : September 20 2020, 10:00 PM , By : AlexD
Get records between two dates using Spring Data JPA
it helps some times You are passing in the same dates to your JPA method as are in the database, which is not expected to return data with those start/end dates, because when the dates are the same, one is not before (or after) the other.As per the l
TAG :mysql
Date : September 20 2020, 08:00 PM , By : Guanyi Wang
Join Tables - include in result rows without data in other table
To fix this issue Never use commas in the FROM clause. Always use proper, explicit, standard JOIN syntax.And, you want a LEFT JOIN:
TAG :mysql
Date : September 20 2020, 07:00 PM , By : priyanshu chakarvart
How can i create a trigger to verify if new data exists on another table?
will help you When using SQL, we don't check if data exists to be sure we won't add duplicates. We attempt to insert it and we place unique constraints. If the record exists, database tells us "No-no-no, it's already there" and that's it.Solution to
TAG :mysql
Date : September 20 2020, 07:00 PM , By : baka sura
How to select all the authors from database with the number of books assigned to them?
wish help you to fix your issue I've the following DB structure: , I guess that you want a left join and aggregation:
TAG :mysql
Date : September 20 2020, 07:00 PM , By : Martin Rumbohm
Running custom SQL query after docker container is built
wish helps you See "Initializing a fresh instance" in https://hub.docker.com/_/mariadb. You can add a folder with SQL files that will be run ONCE only. that can be done with docker-compose adding this configuration:
TAG :mysql
Date : September 20 2020, 04:00 PM , By : chungu ngolwe
Can you use a field comment/description as an alias inside of a (MySQL) sql query?
it fixes the issue You can get the comment without having to type it, using a query like:
TAG :mysql
Date : September 20 2020, 08:00 AM , By : Aliya Ijaz
How to decrypt password in mysql?
hop of those help? You can't.That's the whole point of storing it that way. You're not supposed to be able to see other people's passwords. Ever. If you can't, then hackers can't either.
TAG :mysql
Date : September 20 2020, 08:00 AM , By : Joshua Rodriguez
Specify table-column on "in" operator
should help you out There is no shortcut like that in SQL. Let me explain why.In a query, all table references need to be made in the FROM clause. Hence, you cannot simply refer to table2.col unless table2 has been defined in the FROM clause. table2
TAG :mysql
Date : September 20 2020, 06:00 AM , By : shanavas s
Is there a way to use 2 columns to uniquely identify a row in MYSQL?
Any of those help You can try adding a unique constraint on the combination of first and last names:
TAG :mysql
Date : September 20 2020, 04:00 AM , By : Bellito
Using IF in a MySQL query not working - syntax issues
I hope this helps . Here is my query. $sess is a session variable, which is an account number. This is where the problem is occurring: IF(toAcct = $sess, amount, '-'.amount) as amount , This is your code:
TAG :mysql
Date : September 20 2020, 03:00 AM , By : Fernando
Laravel default user migration
Any of those help In fact you don't need to create this migration. By default in fresh Laravel installation you have created user migrations so you can just run
TAG :mysql
Date : September 20 2020, 03:00 AM , By : Ashvin Solanki
Which column is printed when grouping by finds multiple rows with same value?
help you fix your problem In order for the query you are describing to be valid ANSI SQL, you would have to specify an aggregate function to be used against the ContactValue column. For example, if you wanted the alphabetically earliest contact value
TAG :mysql
Date : September 20 2020, 12:00 AM , By : Lekan
Joining NON NULL with NULL Values
Does that help Table A , I think you want to pull the missing information in a from b. If so:
TAG :mysql
Date : September 19 2020, 10:00 PM , By : maliemo chitja
SQL - Represent an unary (recursive) relationship
Does that help Yes, a foreign key can reference its own entity. This is a pretty common pattern.Here's what it looks like:
TAG :mysql
Date : September 19 2020, 10:00 PM , By : Polly Lee
What is the difference between char_length() and character_length()
it fixes the issue MySQL CHARACTER_LENGTH() returns the length of a given string. The length is measured in characters. The CHARACTER_LENGTH() is the synonym of CHAR_LENGTH().
TAG :mysql
Date : September 19 2020, 09:00 PM , By : RoberFJR
Server side pagination in Graphql Scala
Does that help You just need to define another GraphQL type for your result which also contains the count,
TAG :mysql
Date : September 19 2020, 07:00 PM , By : tredneb
proper download url for mysql for mac for this scenario?
help you fix your problem Look all the way down to the bottom of this image:
TAG :mysql
Date : September 19 2020, 05:00 PM , By : Enedois Noelthon Kar
MySQL Error 1064 with single Column Table
Hope that helps Character is a reserved word in MySQL. You can add the ` symbol to escape it.Can you please try the below query:
TAG :mysql
Date : September 19 2020, 01:00 AM , By : Mark Smith
Optimal way to check if given sentence(query) contains any of the predefined keywords
Hope this helps Try ClickHouse for your workload.According to docs:
TAG :mysql
Date : September 18 2020, 05:00 PM , By : ALeX
Why is MySQL rejecting the following query?
Hope this helps , You made a mistake on your comparison. Use single = not ==
TAG :mysql
Date : September 18 2020, 02:00 PM , By : Henwi13
“Can’t select database” error installing WordPress with Wampserver
around this issue SOLVED! During setup, wp-admin_setup-config.php_step=1, in the form for database connection details, I entered “localhost:3308” instead of “localhost” for Database Host.
TAG :mysql
Date : September 17 2020, 04:00 AM , By : lzimbelman
Clarify how to use WITH, AS function in place of subquery
it helps some times black_list is just like a table. It needs to be referenced in a from clause:
TAG :mysql
Date : September 17 2020, 03:00 AM , By : Rayzoud Bugrayanaz

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