In PostgreSQL, the NUMERIC and DECIMAL types are synonyms so you can use them interchangeably: DECIMAL(p,s) If you prefer a shorter name, you can use the name DEC because DEC and DECIMAL are the same type: DEC(p,s) If precision is not required, you should not use the NUMERIC type ...
Numeric Types -https://www.postgresql.org/docs/10/static/datatype-numeric.html 2、货币类型 Monetary Types -https://www.postgresql.org/docs/10/static/datatype-money.html money固定小数点后2位,超过2位长度会四舍五入,仔细看会发现金额前面有货币类型,这个是根据服务端的lc_monetary设置的。 select'12....
The following types (or spellings thereof) are specified by SQL: bigint, bit, bit varying, boolean, char, character varying, character, varchar, date, double precision, integer, interval, numeric, decimal, real, smallint, time (with or without time zone), timestamp (with or without time ...
整数类型(integer types) integer,4字节,应该成为数字类型的首选,例如存储金额,可以以分为单位存储 smallint,2字节,更节省磁盘空间 bigint,8字节,能够存储的数字范围更大 任意精度类型(arbitrary precision numbers) 关键特性:占用存储空间可变 语法 NUMERIC(precision, scale) precision,总精度,可以存储的总位数 scale...
numeric, int, 和 bigint 类型可以转为 money. 从 real 和 double precision 则需要先转为 numeric first, 例如 SELECT'12.34'::float8::numeric::money; money 可以无损转换为 numeric, 转换为其他类型则会有精度损失, 例如 SELECT'52093.89'::money::numeric::float8; ...
In the rest of the document, we have discussed each of the PostgreSQL Data Types based on PostgreSQL 9.1 Version. Category - Numeric Types Category - Monetary Types Category - Character Types Category - Binary Data Types Category - Date/Time Types ...
下面主要讲一下NumericData,按照上面的顺序说明一下各个结构体的结构, NumericShort,这是数据库对小数据进行存储用的格式。其中n_header是对数据的标记,根据正负、类型(指的是数字大小类型:NUMERIC_SIGN_MASK、NUMERIC_POS、NUMERIC_NEG、NUMERIC_SHORT、NUMERIC_NAN)weight进行运算得到一个标记。n_data和NumericVar中...
| p_film_id integer, p_store_id integer, OUT p_film_count integer | funcpublic | film_not_in_stock | SETOF integer | p_film_id integer, p_store_id integer, OUT p_film_count integer | funcpublic | get_customer_balance | numeric | p_customer_id integer, p_effec...
decimal, double precision, numeric, real The precision (p) and scale (s) specified in ArcGIS can affect the resultant data type created in the database. SeeArcGIS field data typesfor more information. Geometry ST_Geometry, Geometry (PostGIS), Geography (PostGIS) ...
Usingnumericdata types can be beneficial when dealing with financial or scientific data, where precise calculations are required. By leveraging the power of PostgreSQL and the flexibility of Java, we can build robust and efficient applications that handle arbitrary precision numbers effectively. ...