CAST (expr AS BOOLEAN) 命令说明 将expr转换为BOOLEAN类型。 输入值类型 DECIMAL(m,d)、FLOAT、INT/INTEGER、SMALLINT、TINYINT BIGINT DOUBLE VARCHAR JSON 转换规则 原数据类型 目标数据类型 转换规则 VARCHAR JSON BOOLEAN 原数据为true或1,会被转换成1。 原数据为false或0,会被转换成0。 原数据为其他,转换...
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没有double类型，可以试试float
那就先将310变成浮点型在做除法然后保留2位小数 selectCAST((FEE*1.0)/100ASDECIMAL(10,2))asfeefromNET.XXX_TABLE; 或者selectCAST(FEE/100.0ASDECIMAL(10,2))asfeefromNET.XXX_TABLE; 结果: 哎,里面有好多容易被忽略的坑啊。。。
(expr AS DOUBLE) CAST(expr AS MONEY | SMALLMONEY) CAST(expr AS DATE) CAST(expr AS TIME) CAST(expr AS POSIXTIME) CAST(expr AS TIMESTAMP | DATETIME | SMALLDATETIME) CAST(expr AS BIT) CAST(expr AS BINARY | BINARY VARYING | VARBINARY) CAST(expr AS BINARY(n) | BINARY VARYING(n) | ...
('123' AS INT); 123 > SELECT cast('123.0' AS INT); Invalid format > SELECT cast(TIMESTAMP'1970-01-01 00:00:01' AS LONG); 1 > SELECT cast(TIMESTAMP'1970-01-01 00:00:00.000001' AS DOUBLE); 1.0E-6 > SELECT cast(TIMESTAMP'2022-02-01 00:00:00' AS SMALLINT); error: ...
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cast(string as datetime)或cast(datetime as string):会采用默认的日期格式yyyy-mm-dd hh:mi:ss。 除此之外,cast还支持基本数据类型与JSON类型之间的相互转换,所支持的类型包括:JSON/STRING/BIGINT/INT/TINYINT/SMALLINT/DOUBLE/FLOAT/BOOLEAN/SQL-TYPE。示例用法如下: ...