Can we join two tables without condition?

Can we join two tables without condition?

Yes, you can! The longer answer is yes, there are a few ways to combine two tables without a common column, including CROSS JOIN (Cartesian product) and UNION. The latter is technically not a join but can be handy for merging tables in SQL.

Can we join two tables?

A JOIN clause is used to combine rows from two or more tables, based on a related column between them. ... The relationship between the two tables above is the "CustomerID" column.

How do you join two tables without using join keywords?

WHERE can be used to to create a join between tables without using the keyword JOIN , but it can only be used for inner joins. ON is used with JOIN in a join condition to identify which columns is each table to link and can be used with all types of joins....Outer Join.

agent	deal_stage
Garret Kinder	In_Progress

Can we join two tables without primary and foreign key?

A primary key is not required. A foreign key is not required either. You can construct a query joining two tables on any column you wish as long as the datatypes either match or are converted to match.

What is equi join?

An equi join is a type of join that combines tables based on matching values in specified columns. ... The column names do not need to be the same. The resultant table contains repeated columns. It is possible to perform an equi join on more than two tables.

Can you merge tables in Excel?

You can merge (combine) rows from one table into another simply by pasting the data in the first empty cells below the target table. ... If the rows in both tables match up, you can merge the columns of one table with another—by pasting them in the first empty cells to the right of the table.

Can we join more than 2 tables in SQL?

Joins are not limited to two tables. You can join more than two tables in a single SQL statement.

How do I select multiple tables in SQL?

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.

How do I join two tables without matching columns?

3 Answers

1. We can use the Cartesian product, union, and cross-product to join two tables without a common column.
2. Cartesian product means it matches all the rows of table A with all the rows of table B. ...
3. Union returns the combination of result sets of all the SELECT statements.

Can you join two tables without a common column?

joins. Yes, you can! The longer answer is yes, there are a few ways to combine two tables without a common column, including CROSS JOIN (Cartesian product) and UNION. The latter is technically not a join but can be handy for merging tables in SQL.

How to join two tables without keys or relations?

I'd like to do this without using many cursors/looping. This will get you every combination of all columns from Table1 and Table2. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers.

Do you need an index to join two tables?

Adding an index on columns used in a join is usually a good idea (but there are exceptions). Also if you want outer join, you can do the same way using outer join or using union. Union does not require any relationships between tables, but the rows must be same in both the tables.

What's the best way to Union two tables?

A union of the two tables. You'll need to ensure that the column datatypes match up here. 3. Cross Join (as already mentioned) 4. I would even say you could use an inner join as well with a condition that's true. Best bet would be to go with a cross join as already mentioned by another user.