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1 lip 2016 · SELECT * FROM Members WHERE Phone= @Phone; SELECT * FROM Members WHERE Phone= dbo.FormatPhone(@Phone); SELECT * FROM Members WHERE dbo.FormatPhone(Phone)=@Phone; First query is guaranteed optimal, will seek the phone on the index. Second query depends on the characteristics of the dbo.FormatPhone.
25 maj 2011 · Two options: Use the LIKE keyword, along with percent signs in the string. select * from table where field like '%a%' or field like '%b%'.
The WHERE clause is used to filter records. It is used to extract only those records that fulfill a specified condition. WHERE Syntax. SELECT column1, column2, ... FROM table_name. WHERE condition; Note: The WHERE clause is not only used in . SELECT statements, it is also used in UPDATE, DELETE, etc.! Demo Database.
26 sty 2024 · Mastering the use of the WHERE, GROUP BY, and HAVING clauses can greatly enhance the performance and functionality of your MySQL queries. In this tutorial, we will explore these clauses, understand when and how to use them together, and see practical examples to consolidate the concepts covered.
Typically, you use stored functions to encapsulate common formulas or business rules, making them reusable across SQL statements or other stored programs. Unlike a stored procedure, you can use a stored function in SQL statements wherever you use an expression.
The WHERE clause allows you to specify a search condition for the rows returned by a query. The following shows the syntax of the WHERE clause: SELECT select_list FROM table_name WHERE search_condition; Code language: SQL (Structured Query Language) (sql)
The MySQL WHERE clause is used to filter the results from a SELECT, INSERT, UPDATE, or DELETE statement. Syntax. The syntax for the WHERE Clause in MySQL is: WHERE conditions; Parameters or Arguments. conditions. The conditions that must be met for records to be selected. Example - With Single condition.
