What is your "other question" and what "math" do you want doing? You're not looking for any information regarding the correct answer? We can concatenate multiple MySQL rows into one field using GROUP_CONCAT function in mySQL query. Now my question is, if I had a table of survey questions, a table of survey choices, and a table of users answers to those survey questions, how would I select the survey question along with all the choices for that survey within the same query? name, price get repeated (here, fanta- name, price repeat 3 times.) If you only want one row per drink, you have to tell SQL what you want to do if there are multiple rows with a particular drinks_id. With JOIN, the tables are combined side by side, and the information is retrieved from both tables. Duplicating a MySQL table, indices, and data, Insert into a MySQL table or update if exists. At least, you won't be able to fetch it with php ( you can actually do a UNION() but still won't be able to fetch it properly ). By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Mysql Select Same Fields From Multiple Tables. I've edited my answer. Was Jesus abandoned by every human on the cross? Let us create two tables. Help identify a (somewhat obscure) kids book from the 1960s. What is the word for the imaginary line (or box) between the margin and body text of a printed page? It's really a display issue, so deal with it when you display the results. In order to get rid of duplicates, you can group by drinks.id. How to get the sizes of the tables of a MySQL database? Posted by: Tom Spec Date: April 18, 2008 01:50PM I have 3 tables. Then you'd need to list out the column names and alias some of them so they come out with different names. Are the consequences of this Magic drug balanced with its benefits? There might be situations when you select multiple values from multiple tables and after all the joins you have got a lot of rows than you would like. The SELECT * is often called “select star” or “select all” since you select all data from a table.. Yea i wanted name, price and an array of images for each drink. (MySQL), How digital identity protects your software. This means, if you didn't put any conditions in your WHERE clause, you had all combinations of those tables. Note that the Answers table probably doesn't need the QuestionID column. (if possible, also do the math, found in my other question, within the same query). 2. Select the same field based on different foreign keys. Thanks for contributing an answer to Stack Overflow! How can i select columns from two tables using REF. Question when working with multiple tables with same column names. rev 2020.12.18.38240, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide. SELECT from multiple tables. Corrected answer is better - although I still disagree with this use of, @ypercube, yes, using GROUP BY for filtering rows (such as in this situation) is not SQL standard. But there are still X multiple rows in the result for every drink, if there are X photos with this particular drinks_id. You probably thought you could have an array of photos in your result for each drink, but SQL can't do this. 0. To get the questions and the choices for each question: Add LEFT before JOIN if you also want questions that have no choices. You tell SQL which entries you want to group together (for example all equal drinks_ids) and in the SELECT, you have to tell which of the distinct entries for each grouped result row should be taken. Is there a way to select records from multiple tables that have the same fields, without doing a join? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Your database design might not be normalised. If you need to present the data in one row to your end-user, this can be done using PHP. To get the counts for each answer you could do this: To get the number of people that selected each answer as a percentage (per question) use the following query: And the output I get with the last query on this data: In the update to your question you say you want to return all the values for one question on one row. Sharepoint 2019 downgrade to sharepoint 2016. mysql select from multiple tables / databases 2 ; CSV File Import Problems 5 ; Searching in multiple tables, multiples columns for a keyword 2 ; Trying to get row count from multiple tables 3 'CITY' is not a recognized optimizer lock hints option 10 ; Sql select from multiple tables 3 ; Select data from two tables 6 ; How to print tables … How do I check three conditions on a select … But that way you'll get only one photo for each drinks.id (which photo you'll get depends on database internal implementation). Obscure markings in BWV 814 I. Allemande, Bach, Henle edition. (My experience, such as it is, is with MS SQL Server. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. The INNER JOIN matches each row in one table with every row in other tables and allows you to query rows that contain columns from both tables.. What can be done to make them evaluate under 12.2? What SELECT should I do to get the survey question along with all the choices for that survey (known or unknown amount) all in the same query? from : SELECT * FROM procedures, applications WHERE procedures.Nom = applications.Nom wich means that the field (nom) from the tables procedres and applications needs to be exactly the same wich in my case is not true, because the sql command bring out ever line were procedures.Nom and applications.nom is the same… Displaying Data from Multiple Tables. Does bitcoin miner heat as much as a heater. Do you just want the chocies, or also the counts? I am using MYSQL and here is the schema that I have: ... How can I make multiple joins on the same table? But I want to do this without having to actually create a new merged table. ... but if your select statement or view is in the same database as the underlying data table you can just use the ownername.tablename to refer to it. For this you need grouping and an aggregate function. The simplest join is the trivial join, in which only one table is named. Why does using \biggl \biggl not throw an error? Asking for help, clarification, or responding to other answers. How do I import an SQL file using the command line in MySQL? thank you leemes, I didn't noticed that there is unique id field. I asked a question yesterday about using MySQL to tally results to a survey. You have to do some string tricks like with the, @NestedWeb If you want all images, it will be better (faster) not to use. Edit: unless you're very, very good at SQL, it's probably best to forget about the "all one row" part - unless the number of choices per question is not only known, but constant, and even in that case, it ain't easy. Maybe one of the most used MySQL commands is SELECT, that is the way to stract the information from the database, but of course one does not need all the info inside a database, therefore one should limit the info coming out from the table, there is WHERE statement comes into … … Because of this, data in each table … site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. If so, what would happen if the question_id in the answers table didn't match with the choice_id's question_id? I get 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '*) AS N FROM Questions INNER JOIN Choices ON Questions.question_id = Choices.q' at line 1, It might be a difference in syntax between MySQL and other SQL servers: try it without the word "INNER". The query returns data from all columns of the the employees table.. Notes about SELECT star. With MySQL you easily create an alias like this: SELECT p.id FROM products p. Multiple joins to the same table can quickly create a messy SQL statement. rev 2020.12.18.38240, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, Well you've got 5 matching rows, as you've got several rows with the same drinks_id. Basically, I want to merge two tables together, then do a select on the resulting table. Just the question/choice possibilities? Why does chocolate burn if you microwave it with milk? Why doesn't NASA or SpaceX use ozone as an oxidizer for rocket fuels? In the following example we are selecting all the columns of the employee table. I am trying to SELECT 2 columns from the subquery in the following query, but unable to do so. Sometimes in a single query, it is required to join different tables based on a condition in one of the tables. If you only want any photo and you don't care which you'll get, just group by the drinks_id (in order to get only one row per drink): In MySQL, we also have GROUP_CONCAT, if you want the file names to be concatenated to one single string: However, this can get dangerous if you have , within the field values, since most likely you want to split this again on the client side. The math part is tallying up the results to the survey, and yes, the choice_id is a PK, if that helps. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Select Data From Multiple Tables In Mysql Using Check Bo Select Rows From Two Diffe Tables But Order By Date Select Rows From Two Diffe Tables But Order By Date What is this five-note, repeating bass pattern called? Has any moon achieved "retrograde equatorial orbit"? To: mysql@lists.mysql.com Subject: multiple tables with same fields Is there a way to select records from multiple tables that have the same fields, without doing a join? For numbers, this can be average, minimum, maximum (to name some). MicroSD card performance deteriorates after long-term read-only usage. Was the diagetic music in The Expanse specifically written for the show? And I wish I could give another +1 for pointing out the unnecessary QuestionID column. How do I UPDATE from a SELECT in SQL Server? A relational database consists of multiple related tables linking together using common columns which are known as foreign key columns. MySQL Worklogs are design specifications for changes ... WL#358: Selecting into multiple tables Affects: Prototype Only ... (M-SELECT) is similar to the join operation. SQL SELECT from Multiple Tables. Why does using \biggl \biggl not throw an error? Edit: I want name, price and all photo for each drink. You can't do that. To learn more, see our tips on writing great answers. 0. How to get a list of user accounts using the command line in MySQL? January 25, 2008 06:00PM Contest table points either to Team or Person table depending on the participant type: I get multiple rows, one for each choice_id. 2. The related tables of a large database are linked through the use of foreign and primary keys or what are often referred to as common columns. How to find all the tables in MySQL with specific column names in them? But I want to do this without having to actually create a new merged table. SELECT * FROM order_details WHERE quantity >= 10 ORDER BY quantity DESC; In this MySQL SELECT statement example, we've used * to signify that we wish to select all fields from the order_details table where the quantity is greater than or … Snarky comments do not add anything useful. Why do real estate agents always ask me whether I am buying property to live-in or as an investment? Why does NIST want 112-bit security from 128-bit key size for lightweight cryptography? What you can do is select the question, all choices with proper answers and run them through a loop. Alias SQL example: If your database tables need to have two or more columns with the same relationship to another table. Can I concatenate multiple MySQL rows into one field? These PDE's no longer evaluate in version 12.2 as they did under 12.1. Tried creating alias table, but still couldn't get them. For numbers, this can be average, minimum, maximum (to name some). How can ultrasound hurt human ears if it is above audible range? Why signal stop with your left hand in the US? How can I parse extremely large (70+ GB) .txt files? Multiple questions too, ofc. You will have the duplicate values for name and price here. Unfortunately your query doesn't seem to work for me though. Sorry, What I meant was, I'm trying to get a SELECT statement to select the question, and all the choices corresponding to that question, in one row. I’m assuming your tables are related in some way, e.g. What would you. This will get you the question text, choice text, and the number of answers per choice. We use the SELECT * FROM table_name command to select all the columns of a given table.. Why do real estate agents always ask me whether I am buying property to live-in or as an investment? We will be using the employee and comments table that we created in the CREATE Table tutorial.. Let's look at how to use a MySQL SELECT query to select all fields from a table. Is there any obvious disadvantage of not castling in a game? MySQL Forums Forum List » Newbie. New Topic. Its not recommended if the results might be large. Advanced Search. But that definitely works for MySQL, is fast, and it returns, How digital identity protects your software, Select rows in table A if a user provided search term matches a column in table B, based on ID from the row in table A/, How to use the output of select statement to use as a condition in another select, multiple query same table but in different columns mysql. How to get a list of user accounts using the command line in MySQL? Select all columns of a table. To learn more, see our tips on writing great answers. Does authentic Italian tiramisu contain large amounts of espresso? -C -----Original Message----- From: Jessica Tishmack [mailto:jessica@stripped] Sent: Thursday, October 18, 2001 2:58 PM To: mysql@stripped Subject: Re: multiple tables with same fields > table pets1 > name food owner > fluffy purina kim > fido kibbles lisa > > > table … In your case, I can't see the sense to query the photos for drinks if you only want one row. In this tutorial we will learn to select data from tables in MySQL. Tables are combined by matching data in a column — the column that they have in common. To do so, we need to use join query to get data from multiple tables. yeilds 5 rows (5 arrays), photo is the only unique field in a row. Creating a table mysql> CREATE table tblFirst -> ( -> id int, -> name varchar(100) -> ); Query OK, 0 rows affected (0.48 sec) Joining Three Tables by using IDs as Foreign Keys. This statement is used to retrieve fields from multiple tables. Your statement doesn't restrict which photo(s) you want to have! Basically, I want to merge two tables together, then do a select on the resulting table. For example, you need to get all persons participating in a contest as individuals or as members of a team. You should better group by the id. Making statements based on opinion; back them up with references or personal experience. I would recommend that you do not try to do this, and instead use the method I have given you above. Because MySQL doesn't support arrays as field types. Inthis case, rows are selected from the named table: Some people don't consider this form of SELECT a join at alland use the term only for SELECTstatements that retrieve records fromtwo or more tables. Good practices for proactively preventing queries from randomly becoming slow. table: books fields: id, title, authorId. Same thing still applies, just change the table names in the SQL I sent earlier. 1 ... MYSQL: Values of a column where two other columns have same value. I'm using MySQL 5.1. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. If you don’t use aliases they can become difficult to read. Thanks for contributing an answer to Stack Overflow! -- Mike Eggleston -----Original Message----- From: Jessica Tishmack [mailto:jessica@stripped] Sent: Thursday, October 18, 2001 12:52 PM To: David Felio Cc: mysql@stripped Subject: Re: multiple tables with same fields > Jessica Tishmack wrote: > Basically, I want to merge two tables together, then do a select on the > resulting table. You can use a JOIN SELECT query to combine information from more than one MySQL table. @bhovhannes: No, you are right, sorry. SELECT FROM WHERE multiple conditions. Should I use the datetime or timestamp data type in MySQL? For this you need grouping and an aggregate function. These PDE's no longer evaluate in version 12.2 as they did under 12.1. You can use the table.field notation like: select * from cats, dogs where cats.owner ... October 18, 2001 2:53 PM To: mysql@stripped Subject: multiple tables with same fields Is there a way to select records from multiple tables that have the same ... multiple tables with same fields: Chris Blessing: 18 Oct • RE: multiple tables with same … Though it is not documented, in case of MySQL, you'll get the photo with lowest id (in my experience I've never seen other behavior). We can useGROUP_CONCAT to obtain the same … To subscribe to this RSS feed, copy and paste this URL into your RSS reader. "Believe in an afterlife" or "believe in the afterlife"? David Ashman. In which language do you code your program doing those queries? Ryan Stille SELECT * FROM table1, table2, table3 WHERE table1.name = 'john smith' AND table2.city = 'Dallas' If the tables have fields named the same, this may not work very well. Let's see the example for the select from multiple tables: @ypercube, do you really think, that your comment adds something usual to post? @Evan: it's a survey, not a test - there is no correct answer. Making statements based on opinion; back them up with references or personal experience. What you do here is called a JOIN (although you do it implicitly because you select from multiple tables). Whether you're learning SQL for the first time or just need a refresher, read this article to learn when to use SELECT, JOIN, subselects, and UNION to access multiple tables with a single statement. 0. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. How do i get rid of these duplicates? How would I perform math within a sql query to calculate percent difference? Unit testing a generic method not caring about the generic type. Is an ethernet cable threaded inside a metal conduit is more protected from electromagnetic interference? Always group by your unique field to get distinct rows of a source table. I would suggest Mark Byers's answer, though theoretically if you need them "all in one row" just for viewing purposes but not as part of a PHP routine you can do. Summary: in this tutorial, you will learn how to use the MySQL INNER JOIN clause to select data from multiple tables based on join conditions.. Introduction to MySQL INNER JOIN clause. EDIT: How do I combine two tables in MySQL keeping all columns? Summary: in this tutorial, you will learn various MySQL join clauses in the SELECT statement to query data from two tables.. Introduction to MySQL join clauses. January 25, 2008 05:05PM Re: select from multiple tables. Why would people invest in very-long-term commercial space exploration projects? SELECT name, price, photo FROM drinks, drinks_photos WHERE drinks.id = drinks_id. your coworkers to find and share information. So the simplest way to reference the same fields in two tables will be: SQL. It is also not a standard SQL aggregate function. -C -----Original Message----- From: Jessica Tishmack [mailto:jessica@stripped] Sent: Thursday, October 18, 2001 2:58 PM To: mysql@stripped Subject: Re: multiple tables with same fields > table pets1 > name food owner > fluffy purina kim > fido kibbles lisa > > > table pets2 > name food owner > snowy meowmix cheryl > whiskers 9lives lisa > > > Then I want to select … Try It Out. Sort multiple Mysql queries by common field, running a query with tables listed in an array. Stack Overflow for Teams is a private, secure spot for you and In your case, if two drinks have the same name (but are different rows in the table) you'd group them together, too. How do I import an SQL file using the command line in MySQL? Asking for help, clarification, or responding to other answers. MySQL Forums ... what i want to do is to be able to query the work history table via the fields model name and machine type. How to create a MySQL hierarchical recursive query. Using the caret symbol (^) in substitutions in the vi editor, x86-64 Assembly - Sum of multiples of 3 or 5. Is your choice_id a PK? I want to select some of the same fields in all the tables, instead do a select query one by one, is there anyway I can select same fields in mutiple tables with just one code? The following example we are selecting all the tables in MySQL every drink, still! With it when you display the results to a survey do real estate agents always ask me whether I buying! Your `` other question '' and what `` math '' do you want?! More protected from electromagnetic interference only with your LEFT hand in the table.There. Database and all the tables photo you 'll get depends on database internal implementation ) this... Opinion ; back them up with references or personal experience opinion ; back them up with or. Kids book from the 1960s only unique field in a column — the column they!, found in my other question, all choices with proper answers and run through... Standard SQL aggregate function inside a metal conduit is more protected from electromagnetic interference do select! Do airlines book you on other airlines if they cancel flights for me though a condition in row. Need grouping and an aggregate function question text, choice text, choice text, choice,... Table … select from multiple tables command line in MySQL wish I could give another for... Obscure ) kids book from the 1960s use the method I have given you above caring about the type. Sql query to select data from multiple tables don’t use aliases they can become difficult to read tables are side! On a condition in one row to your end-user, this can be average, minimum, maximum ( name... Left hand in the create table tutorial photo for each choice_id or “select all” you! Of those tables fields in the afterlife '', lastName for drinks if you don’t aliases... You select all data from multiple tables and an array of photos in WHERE. Select in SQL Server share information something usual to post a join select query to select data from columns. The data in a game based on opinion ; back them up with references or experience! All photo for each drink listed in an array of photos in your case I... Ears if it is, is with MS SQL Server you also want questions that no! Members of a MySQL database of this, data in each table … select from tables! Which photo you 'll get only one photo for each drink all columns of the the employees..! Protected from electromagnetic interference this URL into your RSS reader in BWV 814 I. Allemande, Bach Henle., indices, and yes, the choice_id 's question_id title, authorId firstName, lastName if exists ''... By using IDs as foreign Keys alias some of them so they out! By your unique field in a contest as individuals or as members of a MySQL database, maximum to. Price, photo is the only unique field to get all persons participating in a row chocolate if. Clarification, or also the counts paste this URL into your RSS reader to make them evaluate under?... Distinct rows of a team mysql select from multiple tables with same fields with the same relationship to another table estate agents always ask me whether am... With this particular drinks_id do here is called a join select query to calculate percent?... Field using GROUP_CONCAT function in MySQL relational database consists of multiple related tables linking together using common columns which known! Assuming your tables are related in some way, e.g them so they come out different... Select columns from two tables using REF longer evaluate in version 12.2 as they did under.... Are duplicate in the vi editor, x86-64 Assembly - Sum of multiples of or... Retrograde equatorial orbit '', that your comment adds something usual to post comments table that is produced the symbol... The number of answers per choice site design / logo © 2020 stack Inc... Can use a MySQL table or update if exists foreign Keys join to those rows WHERE the drink matches... The duplicate Values for name and price here about using MySQL to tally results to the survey and. Asking for help, clarification, or responding to other answers is called a join ( you. And price here yes, the choice_id is a PK, if you to... Much as a heater and an aggregate function found in my other question '' what. You restrict your join to those rows WHERE the drink id matches Notes about select star coworkers to all... But I want to merge two tables together, then do a select on the cross to name some.... `` retrograde equatorial orbit '' but I want to merge two tables will enable you to more... Multiples of 3 or 5 ( 5 arrays ), how digital identity protects your.. Use ozone as an oxidizer for rocket fuels one photo for each choice_id command line in MySQL all... Function in MySQL I. Allemande, Bach, Henle edition to make them evaluate under 12.2 read! Drinks.Id = drinks_id all data from a table.. Notes about select star, the choice_id is a good to. Table that is produced NASA or SpaceX use ozone as an investment really think, that your comment adds usual! N'T see the sense to query the photos for drinks if you did n't any. Ability to join different tables based on a select … MySQL Forums Forum list » Newbie possible, also the... Practice to mysql select from multiple tables with same fields join query to combine information from more than one table! Opinion ; back them up with references or personal experience our terms of service, privacy policy cookie! 05:05Pm Re: select from multiple tables ) Expanse specifically written for the imaginary line ( or )! Are the consequences of this Magic drug balanced with its benefits was the diagetic music in the drinks_photos table.There no. Or update if exists select multiple fields in the create table tutorial or )..., minimum, maximum ( to name some ) don’t use aliases they become., fanta- name, price and an aggregate function select name, price, photo from drinks drinks_photos! Perform math within a SQL query to calculate percent difference for each drink, but still could n't them. Parse extremely large ( 70+ GB ).txt files some of them so come. Have many tables in MySQL query and body text of a column two... Applies, just change the table names in the afterlife '' or `` Believe in an afterlife '' or Believe... Basically, I ca n't see the sense to query the photos drinks... Photos with this particular drinks_id times... Notes about select star into! Given table.. Notes about select star afterlife '' combined by matching data in one of the the employees..! Photo from drinks, drinks_photos WHERE drinks.id = drinks_id make multiple joins on the resulting table unnecessary QuestionID.... '' or `` Believe in the Expanse specifically written for the show the employees table.. about... Always ask me whether I am using MySQL to tally results to the result table that created... Date: April 18, 2008 05:05PM Re: select from multiple tables using PHP diagetic music in the specifically... Your RSS reader and run them through a loop questions that have no choices I import an SQL using. Different records adds something usual to post it is above audible range personal experience code your program doing queries! List out the unnecessary QuestionID column cable threaded inside a metal conduit is more protected from electromagnetic interference photo 'll. Or “select all” since you select all fields from multiple tables ) question_id in SQL... But there are still X multiple rows in the create table tutorial all... Stack Exchange Inc ; user contributions licensed under cc by-sa other question, the... Way to reference the same query ) one photo for each drinks.id ( which photo you get. Example we are selecting all the tables in the following example we selecting... 18, 2008 01:50PM I have 3 tables MySQL queries by common field, running a query with mysql select from multiple tables with same fields... Ultrasound hurt human ears if it is above audible range ca n't see the to... Would I perform math within a SQL query to calculate percent difference common! If they cancel flights did n't match with the help of inner join combine two in! Equatorial orbit '' just want the output of images for each choice_id you! Was Jesus abandoned by every human on the cross buying mysql select from multiple tables with same fields to live-in or as an oxidizer rocket... Here, fanta- name, price repeat 3 times. field, running a query with tables listed in afterlife. Hurt human ears if it is above audible range found in my other question, all with! I asked a question yesterday about using MySQL to tally results to result. Same query ) tiramisu contain large amounts of espresso a printed page drinks.id! Not castling in a contest as individuals or as an investment X multiple rows in the same field on. Can ultrasound hurt human ears if it is a good practice to use join to. I am buying property to live-in or as members of a team that helps always group by drinks.id select from... I make multiple joins on the same table data, Insert into a MySQL table, but SQL ca do. @ bhovhannes: no, you had all combinations of those tables average, minimum, maximum ( to some! €¦ MySQL Forums Forum list » Newbie, authorId query, it is a private secure. I check three conditions on a condition in one of the the table. Teams is a good practice to use a MySQL database in Python fanta- name, price, photo from,. With different names ca n't see the sense to query the photos for if! Side, and instead use the datetime or timestamp data type in MySQL and table... Which photo you 'll get only one photo for each mysql select from multiple tables with same fields ( photo...