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Hace 5 días · The CASE statement acts as a logical IF-THEN-ELSE conditional statement.We can use it to perform conditional branching within the SELECT statement across various SQL databases, including SQL Server, MySQL, and PostgreSQL.. Within SQL SELECT, we can use the WHEN-ELSE statement instead of the traditional IF-ELSE.It evaluates a condition and returns a specific value depending on the outcome.
Hace 6 días · El primero con "try/catch" mostrará la mensaje cuando ocurre cualquier Exception en buscaEmpleadoS.ActualizaSalida (). Esta excepción podría ser la que deseas, o cualquier otra excepción en (o debajo) buscaEmpleadoS.ActualizaSalida (). El segundo con "if" solo mostrará la mensaje cuando buscaEmpleadoS.ActualizaSalida () funciona ...
Hace 3 días · If expr evaluates to TRUE, returns true_result, else returns the evaluation for else_result. else_result isn't evaluated if expr evaluates to TRUE. true_result isn't evaluated if expr...
Hace 3 días · MySQL Show id of rows where column start_time, end_time value is same and count is greater than 3. Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer ...
Hace 3 días · Comandos básicos de Mysql desde consola Windows. Un post donde compartimos los comandos básicos de mysql en consola, para iniciar el servicio mysql, crear base de datos, crear tablas y consultas desde la línea de comandos. Explicado para principiantes, si eres un experto solo te servirá para refrescar la memoria.
Hace 3 días · The CASE statement performs a switch based on a condition. The basic form is identical to the ternary condition used in many programming languages (CASE WHEN cond THEN a ELSE b END is equivalent to cond ? a : b). With a single condition this can be expressed with IF(cond, a, b).
Hace 4 días · Abstract. This is the MySQL Reference Manual. It documents MySQL 5.7 through 5.7.47, as well as NDB Cluster releases based on version 7.5 of NDB through 5.7.44-ndb-7.5.35, respectively. It may include documentation of features of MySQL versions that have not yet been released. For information about which versions have been released, see the ...
