Using SELECT Statements in Views in MySQL

Q

Can SELECT Statements Be Used on Views in MySQL?

✍: FYIcenter.com

A

Select (query) statements can be used on views in the same way as tables. The following tutorial exercise helps you creating a view and running a query statement on the view:

mysql> CREATE VIEW myLinks AS SELECT * FROM fyi_links 
   WHERE url LIKE '%fyi%';
Query OK, 0 rows affected (0.49 sec)

mysql> SELECT tag, counts, url, DATE(created) 
   FROM myLinks ORDER BY counts DESC;
+------+--------+-------------------+---------------+
| tag  | counts | url               | DATE(created) |
+------+--------+-------------------+---------------+
| SQA  |      6 | sqa.fyicenter.com | 2006-07-01    |
| DEV  |      4 | dev.fyicenter.com | 2006-04-30    |
| DBA  |      3 | dba.fyicenter.com | 2006-07-01    |
+------+--------+-------------------+---------------+
3 rows in set (0.00 sec)

⇒ Filerting out Duplications in Returning Rows in MySQL

⇐ Count Number of Rows with SELECT Statements in MySQL

⇑ SELECT Query Statements with GROUP BY in MySQL

⇑⇑ MySQL Database Tutorials

2018-01-06, 2237🔥, 0💬

Using Group Functions in the SELECT Clause in MySQL
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Sorting Query Output in MySQL
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Count Number of Rows with SELECT Statements in MySQL
How To Use SELECT Statement to Count Number of Rows in MySQL? If you want to count the number of rows, you can use the COUNT(*) function in the SELECT clause. The following tutorial exercise shows you some good example: mysql> SELECT COUNT(*) FROM fyi_links; +----------+ | COUNT(*) | +-------... 2018-01-06, 2287🔥, 0💬

Group Functions with Non-group Selections in MySQL
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Using SELECT Statements in Views in MySQL
Can SELECT Statements Be Used on Views in MySQL? Select (query) statements can be used on views in the same way as tables. The following tutorial exercise helps you creating a view and running a query statement on the view: mysql> CREATE VIEW myLinks AS SELECT * FROM fyi_links WHERE url LIKE ... 2018-01-06, 2238🔥, 0💬

Sorting Output in Descending Order in MySQL
How To Sort Output in Descending Order in MySQL? If you want to sort a column in descending order, you can specify the DESC keyword in the ORDER BY clause. The following SELECT statement first sorts the "tag" in descending order, then sorts the "counts" in ascending order: mysql> SELECT tag, ... 2017-11-02, 2202🔥, 0💬

What Are Group Functions in MySQL
What Are Group Functions in MySQL? Group functions are functions applied to a group of rows. Examples of group functions are: COUNT(*) - Returns the number of rows in the group. MIN(exp) - Returns the minimum value of the expression evaluated on each row of the group. MAX(exp) - Returns the maximum ... 2018-01-06, 2169🔥, 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, 2148🔥, 0💬

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How To Filter Out Duplications in Returning Rows in MySQL? If there are duplications in the returning rows, and you want to remove the duplications, you can use the keyword DISTINCT in the SELECT clause. The DISTINCT applies to the combination of all data fields specified in the SELECT clause. The t... 2018-01-06, 2127🔥, 0💬

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