This Oracle tutorial explains how to use the Oracle / PLSQL CAST function with syntax and examples. The Oracle / PLSQL CAST function converts one datatype to another.
The CAST function converts a value from one data type to another and provides a data type to a dynamic parameter (?) or a NULL value. CAST expressions are permitted anywhere expressions are permitted. Syntax CAST ( [ Expression | NULL | ? ] AS Datatype) The data type to which you ...
Oracle/ Oracle Database/ Release 12.2 SQL Language Reference Syntax Description of the illustration cast.eps Purpose CASTlets you convert built-in data types or collection-typed values of one type into another built-in data type or collection type. You can cast an unnamed operand (such as a ...
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oracle中,如何将两个字段数据合并成一个字段显示,接下来看一下在sql server和pl/sql的区别 sql server中如何合并(用Cast()函数) --1、创建模拟的数据表---createtableGoodsCate( Midintnotnull, Codevarchar(10)notnull, Namevarchar(20)notnull,
Where can you use SQL CAST There is a copious number of other instances where the cast function can be used efficiently. As shown in the samples below, you can use the cast function in conjunction with most query commands. However, since it is commonly used in a SELECT statement, the cas...
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CONVERT(expr USING transcoding_name) is standard SQL syntax. The non-USING form of CONVERT() is ODBC syntax. Regardless of the syntax used, the function returns NULL if expr is NULL. CONVERT(expr USING transcoding_name) converts data between different character sets. In MySQL, transcoding na...
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SQL 型 V4.2.0 参考指南 SQL 参考 SQL 语法 普通租户(Oracle 模式) 函数 单行函数 转换函数 CAST 更新时间:2023-08-01 14:14:04 描述 该函数用于将一种内置数据类型转换为另一种内置数据类型。 语法 CAST({ expr|MULTISET(subquery)}AStype_name) ...