Apache Tajo-数据类型

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📜 Apache Tajo-数据类型

📅 最后修改于: 2020-12-02 06:03:20 🧑 作者: Mango

要在Tajo Shell中执行查询，请打开终端并移至Tajo安装目录，然后键入以下命令-

$ bin/tsql

您现在将看到响应，如以下程序所示：

default>

您现在可以执行查询。否则，您可以通过Web控制台应用程序将查询运行到以下URL- http：// localhost：26080 /

原始数据类型

Apache Tajo支持以下原始数据类型列表-

S.No.	Data type & Description
1	integer Used for storing integer value with 4 bytes storage.
2	tinyint Tiny integer value is 1 byte
3	smallint Used for storing small size integer 2 bytes value.
4	bigint Big range integer value has 8 bytes storage.
5	boolean Returns true/false.
6	real Used for storing real value. Size is 4 bytes.
7	float Floating point precision value which has 4 or 8 bytes storage space.
8	double Double point precision value stored in 8 bytes.
9	char[(n)] Character value.
10	varchar[(n)] Variable-length non-Unicode data.
11	number Decimal values.
12	binary Binary values.
13	date Calendar date (year, month, day). Example − DATE ‘2016-08-22’
14	time Time of day (hour, minute, second, millisecond) without a time zone. Values of this type are parsed and rendered in the session time zone.
15	timezone Time of day (hour, minute, second, millisecond) with a time zone. Values of this type are rendered using the time zone from the value. Example − TIME ’01:02:03.456 Asia/kolkata’
16	timestamp Instant in time that includes the date and time of day without a time zone. Example − TIMESTAMP ‘2016-08-22 03:04:05.321’
17	text Variable-length Unicode text.