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How do I SELECT columns in two different tables?

How do I SELECT columns in two different tables?

SELECT orders. order_id, suppliers.name. FROM suppliers. INNER JOIN orders….Example syntax to select from multiple tables:

  1. SELECT p. p_id, p. cus_id, p. p_name, c1. name1, c2. name2.
  2. FROM product AS p.
  3. LEFT JOIN customer1 AS c1.
  4. ON p. cus_id=c1. cus_id.
  5. LEFT JOIN customer2 AS c2.
  6. ON p. cus_id = c2. cus_id.

Can we create view on multiple tables?

A view that combines data from multiple tables enables you to show relevant information in multiple tables together. You can create a view that combines data from two or more tables by naming more than one table in the FROM clause.

Can one column referencing multiple tables?

In SQL can a single column in a table reference multiple tables – no this is not possible. A foreign key always references one target table (and one table only).

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How do I select different columns in different tables in mysql?

“how to select multiple columns from different tables in mysql” Code Answer

  1. — MySQL.
  2. — t1 = table1.
  3. — dt2 = column of table.
  4. SELECT t1. dt2, t2. dt4, t2. dt5, t2. dt3 #get dt3 data from table2.
  5. FROM table1 t1, table2 t2 — Doesn’t need to have t1, or t2.
  6. WHERE t1. dt2 = ‘asd’ AND t2. dt4 = ‘qax’ AND t2. dt5 = 456.

How do I create a view from different tables?

To create a view, a user must have the appropriate system privilege according to the specific implementation. CREATE VIEW view_name AS SELECT column1, column2….. FROM table_name WHERE [condition]; You can include multiple tables in your SELECT statement in a similar way as you use them in a normal SQL SELECT query.

How is a view different from a table?

A view consists of rows and columns just like a table. The difference between a view and a table is that views are definitions built on top of other tables (or views), and do not hold data themselves. If data is changing in the underlying table, the same change is reflected in the view.

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Can a foreign key references two different tables?

Foreign keys link data in one table to the data in another table. A foreign key column in a table points to a column with unique values in another table (often the primary key column) to create a way of cross-referencing the two tables.

Can you have a foreign key reference multiple tables?

A Foreign Key is a database key that is used to link two tables together. The FOREIGN KEY constraint differs from the PRIMARY KEY constraint in that, you can create only one PRIMARY KEY per each table, with the ability to create multiple FOREIGN KEY constraints in each table by referencing multiple parent table.

How do you create a view in a table?

A view can also be made up by selecting data from more than one tables. Creates a view with a name of the view. Creates a view which collects values from itself and must have a column clause and may not use the WITH clause. [ (column [.])] Names all of the columns in the view.

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How to show only a and e columns?

How to show only a and e columns? You need to add the condition to get what you need, and COLUMN_NAME in (‘a’,’e’) will return only COLUMN_NAME has ‘a’ or ‘e’ value. Thanks for contributing an answer to Stack Overflow!

How to join two tables with different columns without relationships?

If you have and id to join tables: create view View1 select t1.column2, t1.column3, t2.column6 from table1 t1 join table2 t2 on t1.id = t2.id If you don’t have and id and want to get mixes columns without relationships: create view View1 select t1.column2, t1.column3, t2.column6 from table1 t1 cross join table2 t2 on t1.id = t2.id

What is the difference between view and base table?

They are operated just like the base table but they don’t contain any data of their own. A view can be accessed with the use of SQL SELECT statement like a table. A view can also be made up by selecting data from more than one tables. Creates a view with a name of the view.