關於「SQL DECLARE」標籤，搜尋引擎有相關的訊息討論：

sql server - Declaring variable type based on a column typestackoverflow.com › questions › declaring-variable-type-b...DECLARE @local_variable (Transact-SQL) - Microsoft Learnlearn.microsoft.com › ... › Language elements › VariablesVariables (Transact-SQL) - SQL Server - Micros