How do I select multiple columns in SQL query?

How do I select multiple values in SQL?

The SQL IN Operator The IN operator allows you to specify multiple values in a WHERE clause. The IN operator is a shorthand for multiple OR conditions.

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 select multiple columns as single column in SQL?

SELECT COALESCE(column1,'') + COALESCE(column2,'') FROM table1. For this example, if column1 is NULL , then the results of column2 will show up, instead of a simple NULL . Hope this helps!

How do I select multiple columns in a data set?

There are three basic methods you can use to select multiple columns of a pandas DataFrame:1Method 1: Select Columns by Index df_new = df. iloc[:, [0,1,3]]2Method 2: Select Columns in Index Range df_new = df. iloc[:, 0:3]3Method 3: Select Columns by Name df_new = df[['col1', 'col2']]How to Select Multiple Columns in Pandas (With Examples)