SQL Copy SELECT OBJECTPROPERTY(OBJECT_ID('Sales.CalculateSalesTax'), 'IsDeterministic'); Built-in function determinismYou can't influence the determinism of any built-in function. Each built-in function is deterministic or nondeterministic based on how the function is implemented...
Azure SQL Managed Instance Deterministic functions always return the same result any time they're called with a specific set of input values and given the same state of the database. Nondeterministic functions may return different results each time they're called with a specific set of input val...
一个叶子节点的 expressions 的deterministic属性默认是true(叶子节点没有children,因此children.forall(_.deterministic) 即Nil.forall(_.deterministic) 返回true),即默认是确定性的。 Nondeterministic不确定性接口 Nondeterministic是个不确实性表达式的接口,Nondeterministic继承Expression,重写deterministic属性,默认给false。
一个叶子节点的 expressions 的deterministic属性默认是true(叶子节点没有children,因此children.forall(_.deterministic) 即Nil.forall(_.deterministic) 返回true),即默认是确定性的。 Nondeterministic不确定性接口 Nondeterministic是个不确实性表达式的接口,Nondeterministic继承Expression,重写deterministic属性,默认给false。
GET_MONTH 为 UDF,没有指定 DETERMINISTIC 属性,导致 SQL 执行计划生成时无法确定其对应的值,OceanBase 数据库无法进行分区裁剪,因而 SELECT 需要在所有分区上执行;当 UDF 定义为 DETERMINISTIC 时,SQL 优化器会将其视为常量,并在执行计划生成时直接用其对应的值进行分区的裁剪。 适用版本 OceanBase 数据库 V3.2.3...
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An SQL statement is non-deterministic in a replication set if it does not return the same result when executed on all replication nodes in the set. If an SQL statement contains a non-deterministic expression, by-value replication of the expression is performed. Updates to replicated data that...
sql CREATE FUNCTION my_function(param INT) RETURNS INT BEGIN RETURN param + 1; END; 要修改这个函数以满足MySQL的要求,你可以添加一个特性声明,如 DETERMINISTIC: sql CREATE FUNCTION my_function(param INT) RETURNS INT DETERMINISTIC BEGIN RETURN param + 1; END; 或者,如果函数包含SQL语句,并且只读取...
This function has none of DETERMINISTIC NO SQL,or READS SQL DATA in it【解决方法】,今天爱分享给大家带来This function has none of DETERMINISTIC NO SQL,or READS SQL DATA in it【解决方法】,希望能够帮助到大家。
解决方法: 解决办法也有两种, 第一种是在创建子程序(存储过程、函数、触发器)时,声明为DETERMINISTIC或NO SQL与READS SQL DATA中的一个, 例如: CREATE DEFINER = CURRENT_USER PROCEDURE `NewProc`() DETERMINI