Selecting Columns in a Query in MySQL

Q

How To Select Some Columns from a Table in MySQL?

✍: FYIcenter.com

A

If you want explicitly tell the query to return some columns, you can specify the column names in the SELECT clause. The following select statement returns only two columns, "id" and "url" from the table "fyi_links":

mysql> SELECT id, url FROM fyi_links;
+-----+-------------------+
| id  | url               |
+-----+-------------------+
| 101 | dev.fyicenter.com |
| 102 | dba.fyicenter.com |
| 103 | sqa.fyicenter.com |
+-----+-------------------+
3 rows in set (0.00 sec)

⇒ Select Rows with WHERE Clause in MySQL

⇐ Selecting All Columns of All Rows in MySQL

⇑ SELECT Query Statements with GROUP BY in MySQL

⇑⇑ MySQL Database Tutorials

2017-11-05, 3019🔥, 0💬

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Select Rows with WHERE Clause in MySQL
How To Select Some Rows from a Table in MySQL? If you don't want select all rows from a table, you can specify a WHERE clause to tell the query to return only the rows that meets the condition defined in the WHERE clause. The WHERE clause condition is a normal Boolean expression. If any data from ta... 2017-11-02, 3454🔥, 0💬

Deleting All Rows in a Table in MySQL
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Sorting Query Output in MySQL
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Selecting All Columns of All Rows in MySQL
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Sorting Output in Descending Order in MySQL
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Selecting Columns in a Query in MySQL
How To Select Some Columns from a Table in MySQL? If you want explicitly tell the query to return some columns, you can specify the column names in the SELECT clause. The following select statement returns only two columns, "id" and "url" from the table "fyi_links": mysql> SELECT id, url FROM... 2017-11-05, 3020🔥, 0💬

Sort by Multiple Columns in MySQL
Can the Query Output Be Sorted by Multiple Columns in MySQL? You can specifying multiple columns in the ORDER BY clause as shown in the following example statement, which returns employees' salaries sorted by department and salary value: mysql> SELECT tag, counts, url, DATE(created) FROM fyi_... 2017-11-02, 3006🔥, 0💬

Adding More Data to the Test Table in MySQL
How To Add More Data to the Testing Table in MySQL? If you want to continue with other tutorial exercises in this FAQ collection, you need to add more data to the testing table. Follow the script below to add a new column and: mysql> ALTER TABLE fyi_links ADD COLUMN tag VARCHAR(8); mysql&... 2017-11-02, 2963🔥, 0💬

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