Quick Answer: How do I select only few columns in SQL?

If you really want to do without typing each column name, one way is using dynamic query. For example in SQL Server you can write the dynamic query like following. Specify column names that you want to select instead of using * operator. There actually is one easy way in SSMS.

How do I select a few columns in SQL?

To select multiple columns from a table, simply separate the column names with commas! For example, this query selects two columns, name and birthdate , from the people table: SELECT name, birthdate FROM people; Sometimes, you may want to select all columns from a table.

How do I select 3 columns 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 select all columns except 1?

Just right click on the table > Script table as > Select to > New Query window. You will see the select query. Just take out the column you want to exclude and you have your preferred select query.

  1. get all columns.
  2. loop through all columns and remove wich you want.
  3. make your query.
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How do I select the first 10 columns in SQL?

For example: SELECT TOP(10) PERCENT contact_id, last_name, first_name FROM contacts WHERE last_name = ‘Anderson’ ORDER BY contact_id; This SQL SELECT TOP example would select the first 10% of the records from the full result set.

How do I retrieve columns in SQL?

SELECT column1, column2 FROM table1, table2 WHERE column2=’value’; In the above SQL statement: The SELECT clause specifies one or more columns to be retrieved; to specify multiple columns, use a comma and a space between column names. To retrieve all columns, use the wild card * (an asterisk).

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 rows in SQL?

SELECT * FROM users WHERE ( id IN (1,2,..,n) ); or, if you wish to limit to a list of records between id 20 and id 40, then you can easily write: SELECT * FROM users WHERE ( ( id >= 20 ) AND ( id <= 40 ) );

How do I select multiple columns?

Select Columns

You can also select multiple columns by selecting a column header, pressing and holding the Shift key, and pressing the Left or Right arrow keys to select additional columns.

How do I select duplicate rows in SQL?

How to Find Duplicate Values in SQL

  1. Using the GROUP BY clause to group all rows by the target column(s) – i.e. the column(s) you want to check for duplicate values on.
  2. Using the COUNT function in the HAVING clause to check if any of the groups have more than 1 entry; those would be the duplicate values.
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How do I select all columns?

Select one or more rows and columns

  1. Select the letter at the top to select the entire column. Or click on any cell in the column and then press Ctrl + Space.
  2. Select the row number to select the entire row. …
  3. To select non-adjacent rows or columns, hold Ctrl and select the row or column numbers.

How do I select a column name in SQL?

Tip Query to get all column names from database table in SQL…

  1. SELECT COLUMN_NAME.
  2. FROM INFORMATION_SCHEMA. COLUMNS.
  3. WHERE TABLE_NAME = ‘Your Table Name’
  4. ORDER BY ORDINAL_POSITION.

How do I select all rows except one in SQL?

The SQL EXCEPT operator is used to return all rows in the first SELECT statement that are not returned by the second SELECT statement. Each SELECT statement will define a dataset. The EXCEPT operator will retrieve all records from the first dataset and then remove from the results all records from the second dataset.

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