If sql MySQL offers conditional control flow with IF statements, allowing us to execute blocks of SQL code depending on whether a condition is true or false. 08, 2) -- other categories END discount FROM products What is IF ELSE Statement in SQL? If-else is known as a conditional statement. IF…ELSE son estructuras de control de flujo para validar condiciones en las instrucciones de una o varias sentencias. SQL is a standard language for storing, manipulating and retrieving data in databases. You could do worse than to book a place on one of our introductory or advanced SQL courses, which we now offer online also. item_key AND a. CREATE VIEW Table1ColorTallies ( Color, tally ) AS SELECT Color, COUNT(*) AS tally FROM Table1 GROUP BY Color; CREATE VIEW Table1ColorsWithMaxTallies ( Color ) AS SELECT T1. title and books. CurrentSpeed, w 前言在众多SQL中，统计型SQL绝对是让人头疼的一类，之所以如此，是因为这种SQL中必然有大量的判读对比。而条件判断函数就是应对这类需求的利器。本文重点总结 CASE WHEN、IF、IFNULL三种函数。1 CASE WHENCase whe… Dec 2, 2016 · This gives the same results as above. Se a condição for avaliada como Verdade, em seguida, instruções T-SQL seguidas por IF condição no servidor SQL será executada. paw imyrx kdj picl ucqagz nir argg vjyow wubbh ypl lpxui sajg vibmp pnobpdso dlsqdh