![]() The following example uses the SELECT statement to select the last names of all employees: SELECT lastNameįROM employees Code language: SQL (Structured Query Language) ( sql ) The table also has many rows as shown in the following picture: A) Using the MySQL SELECT statement to retrieve data from a single column example The employees table has eight columns: employeeNumber, lastName, firstName, extension, email, officeCode, reportsTo, and jobTitle. We’ll use the employees table in the sample database for the following examples. When executing the SELECT statement, MySQL evaluates the FROM clause before the SELECT clause: For example: select select_listįrom table_name Code language: SQL (Structured Query Language) ( sql ) Because SQL is case-insensitive, you can write the SQL statement in lowercase, uppercase, etc. By convention, you write the SQL keywords in uppercase. If you have two or more statements, you need to use the semicolon( ) to separate them so that MySQL will execute each statement individually. Second, specify the name of the table from which you want to select data after the FROM keyword.If the select_list has multiple columns, you need to separate them by a comma ( ,). First, specify one or more columns from which you want to select data after the SELECT keyword.To write a SELECT statement in MySQL, you use this syntax: SELECT select_listįROM table_name Code language: SQL (Structured Query Language) ( sql ) The SELECT statement allows you to select data from one or more tables. Summary: in this tutorial, you will learn how to use the basic form of the MySQL SELECT statement to query data from a table. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |