What is the best way to select multiple rows by ID in SQL?

What is the best way to select multiple rows by ID in SQL?

1. iF there are a lot of IDs, better to stick them into a temp table and run a join with that temp table.
2. Make sure your table has an index on id.
3. If the real-timeliness of the data is not critical, put the query results in a cache on the application side.

How do I select multiple values in a selected query?

Pack the values into one string with comma separated. Set the string as parameter and pass it into the SQL statement. Unpack the values and insert the values into a table, Where customerid in (select id from #temp)

How do you select multiple records?

To select multiple records: While holding down the Ctrl key, click on each desired record.

How do I SELECT multiple items in SQL query?

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 multiple records 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 to select multiple IDs in a row?

To only get the result (s) once, distinct. This will get users which have 3 lines (having…count) and then you specify which lines are permitted. Note that if you don’t have a UNIQUE KEY on (user_id, ancestry), a user with ‘id, england’ that appears 3 times will also match… so it depends on your table structure and/or data.

How to sort result set by first name?

The result set now is sorted by the first_name column. To sort by the employees by the first name in ascending order and the last name in descending order, you use the following statement: First, the database system sorts the result set by the first name in ascending order, then it sorts the sorted result set by the last name in descending order.

How to select a single ID that meets multiple criteria?

The last line means the user’s ancestry has all 3 countries. SELECT DISTINCT (user_id) FROM [user] WHERE user.user_id In (select user_id from user where ancestry = ‘England’) And user.user_id In (select user_id from user where ancestry = ‘France’) And user.user_id In (select user_id from user where ancestry = ‘Germany’);`

Can you select more than one user ID?

To clarify: Yes, the user_id / ancestry columns make a unique pair, so a country would not be repeated for a given user. P.P.S. I am looking for users who hail from all 3 countries – England, France, AND Germany (and the countries are arbitrary). P.P.P.S. I am not looking for answers specific to a certain RDBMS.