Yahoo Search Búsqueda en la Web

Entrar

Resultado de búsqueda

  1. www.mysqltutorial.org › mysql-aggregate-functions › mysql-count-ifMySQL COUNT IF

    In this tutorial, you will learn how to use the MySQL COUNT IF to count values in a set based on a condition.

  2. stackoverflow.com › questions › 56016367sql - How to use count if in mysql - Stack Overflow

    7 de may. de 2019 · SELECT COUNT(case when application_type=1 then 1 end) as total from table_1 OR . SELECT COUNT(*) as total from table_1 where application_type=1 OR. SELECT count(if(application_type=1, 1, NULL)) as total from table_1

  3. www.delftstack.com › es › howtoEl método COUNT IF en MySQL | Delft Stack

    28 de mar. de 2022 · En este tutorial, nuestro objetivo es explorar cómo usar el método COUNT IF en MySQL. El método COUNT() en MySQL da como resultado el número total de filas en la tabla. Pero en este artículo, estamos interesados en entender cómo podemos contar información basada en una condición IF particular de nuestros datos.

  4. stackoverflow.com › questions › 39764892MYSQL Select count with IF - Stack Overflow

    29 de sept. de 2016 · count(value) will count as 1 if value is something else than null, see documentation: COUNT(expr) Returns a count of the number of non-NULL values of expr in the rows retrieved by a SELECT statement. The result is a BIGINT value. So you counted every row, independent from your IF-condition.

  5. es.stackoverflow.com › questions › 189678MySql Contar número de veces con una condición

    SELECT obs_reg_equipo, COUNT(DISTINCT id_equipo) AS diasTrabajados FROM registro_equipo re WHERE re.fechaInicio_reg_equipo = '2018-08-13' GROUP BY obs_reg_equipo

  6. stackoverflow.com › questions › 5045124sql - COUNT CASE and WHEN statement in MySQL - Stack Overflow

    18 de feb. de 2011 · How to use COUNT CASE and WHEN statement in MySQL query, to count when data is NULL and when it is not NULL in one MySQL query?

  7. www.mysqltutorial.org › mysql-aggregate-functions › mysql-countMySQL COUNT

    The COUNT() function allows you to count all rows or only rows that match a specified condition. The COUNT() function has three forms: COUNT(*) COUNT(expression) COUNT(DISTINCT expression) COUNT (*) function. The COUNT(*) function returns the number of rows in a result set returned by a SELECT statement.