How do I show two columns in one column in SQL?

How do I display multiple columns in SQL?

Using the SELECT Statement to Retrieve Data in SQL

To retrieve multiple columns from a table, you use the same SELECT statement. The only difference is that you must specify multiple column names after the SELECT keyword, and separate each column by a comma.

How do I combine two text columns in SQL?

SQL Server CONCAT() Function

  1. Add two strings together: SELECT CONCAT(‘W3Schools’, ‘.com’);
  2. Add 3 strings together: SELECT CONCAT(‘SQL’, ‘ is’, ‘ fun!’ );
  3. Add strings together (separate each string with a space character): SELECT CONCAT(‘SQL’, ‘ ‘, ‘is’, ‘ ‘, ‘fun!’ );

How do I get multiple columns of data in one row in SQL?

STUFF Function in SQL Server

  1. Create a database.
  2. Create 2 tables as in the following.
  3. Execute this SQL Query to get the student courseIds separated by a comma. USE StudentCourseDB. SELECT StudentID, CourseIDs=STUFF. ( ( SELECT DISTINCT ‘, ‘ + CAST(CourseID AS VARCHAR(MAX)) FROM StudentCourses t2.
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Can we apply distinct on multiple columns?

Answer. Yes, the DISTINCT clause can be applied to any valid SELECT query. It is important to note that DISTINCT will filter out all rows that are not unique in terms of all selected columns.

Does distinct apply to all columns?

Yes, DISTINCT works on all combinations of column values for all columns in the SELECT clause.

How do I concatenate two columns in SQL with spaces?

To concatenate two string type columns separated by space, we can use space function. Notice the SPACE(1) function in between FirstName and LastName. As the parameter value passed in SPACE function is 1 so there will be one blank space in between FirstName and LastName column values.

How do you concatenate two columns with spaces?

There are two ways to do this: Add double quotation marks with a space between them ” “. For example: =CONCATENATE(“Hello”, ” “, “World!”). Add a space after the Text argument.

How can I merge two tables in SQL query?

Key learnings

  1. use the keyword UNION to stack datasets without duplicate values.
  2. use the keyword UNION ALL to stack datasets with duplicate values.
  3. use the keyword INNER JOIN to join two tables together and only get the overlapping values.

How do I combine two columns in select query?

Instead of getting all the table columns using * in your sql statement, you use to specify the table columns you need. Remove the * from your query and use individual column names, like this: SELECT SOME_OTHER_COLUMN, CONCAT(FIRSTNAME, ‘,’, LASTNAME) AS FIRSTNAME FROM `customer`;

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How do I select rows to columns in SQL?

In SQL Server you can use the PIVOT function to transform the data from rows to columns: select Firstname, Amount, PostalCode, LastName, AccountNumber from ( select value, columnname from yourtable ) d pivot ( max(value) for columnname in (Firstname, Amount, PostalCode, LastName, AccountNumber) ) piv; See Demo.

How do I select multiple columns based on condition in SQL?

CREATE TYPE foo AS (new1 text, new2 int); Then you can select multiple columns based on a single CASE expression and unnest the record in the same step: SELECT tbl_id, (CASE WHEN TRUE THEN (col1::text, col2::int)::foo ELSE (col2::text, col3::int)::foo END).

How do I get distinct to only one column?

Adding the DISTINCT keyword to a SELECT query causes it to return only unique values for the specified column list so that duplicate rows are removed from the result set.

How can I get distinct count of two columns in SQL?

How to count distinct values over multiple columns using SQL

  1. Method-1 Using a derived table (subquery) You can simply create a select distinct query and wrap it inside of a select count(*) sql, like shown below: …
  2. Method-2 Using Concatenated columns. …
  3. Method-3 If performance is a factor.