sql - How to select only a few columns of a table - Stack Overflow
Feb 28, 2019 · SELECT GROUP_CONCAT(COLUMN_NAME SEPARATOR ', ') FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = 'schemaName' AND …
sql - Select only some columns from a table on a JOIN - Stack Overflow
Mar 26, 2022 · Just list the columns you want to select as you would in any query: LEFT JOIN table2 ON (...) Note that I've included the table1. or table2. prefix on all columns to be sure …
SQL select rows with only a certain value in them
Apr 6, 2016 · How do I only get unique rows which have Col 3 = 1? I want to get rows 3 and 6 (Col 2 = B and D respectively). I do not want A nor C since they have Col 3 = 2 as well. I've …
SQL SELECT TOP, LIMIT, FETCH FIRST ROWS ONLY, ROWNUM - W3Schools
MySQL supports the LIMIT clause to select a limited number of records, while Oracle uses FETCH FIRST n ROWS ONLY and ROWNUM.
SQL SELECT Statement - W3Schools
If you want to return all columns, without specifying every column name, you can use the SELECT * syntax: Return all the columns from the Customers table: Well organized and easy to …
How to Select Individual Columns in SQL? - GeeksforGeeks
Nov 9, 2021 · In SQL, sometimes we require to select individual columns from a table. For this, we use a specific kind of query shown in the below demonstration. For this article, we will be …
mysql - Selecting only some columns from a table - Database ...
Jun 9, 2015 · I have a MySQL table that consists of around 200 columns. The name of each column is col_i (i=1 ,2,..200). Suppose I have to select only first 50 columns, how should I …
How to select distinct for one column and any in another column?
In recent version (5.7 and 8.0+) where the strict settings and ONLY_FULL_GROUP_BY are the default, you can use the ANY_VALUE() function, added in 5.7: SELECT key, …
SQL Exercises: Select specific columns from a table - w3resource
Feb 10, 2025 · SQL Exercise, Practice and Solution: Write a SQL statement to display specific columns such as names and commissions for all salespeople.
How to Retrieve Column Names From a Table in SQL - Baeldung
Aug 4, 2024 · In this tutorial, we’ll explore several methods to retrieve column names in SQL. To begin with, we’ll cover the SHOW COLUMNS command, INFORMATION_SCHEMA, and the …