interval:时间间隔类型,通过postgresql.conf的intervalstyle调整,或通过set intervalstyle,默认值为postgresql,可设置成sql_standard或iso_8601或postgres_verbose。 9.boolean类型 TRUE/'t'/'true'/'y'/'yes'/'on'/'1' FALSE/'f'/'false'/'n'/'no'/'off'/'0' 10.枚举类型 先定义,然后再用于表或函数的...
variable-length bit string:变长位串 boolean bit boolean bool logical boolean (true/false):布尔值 box rectangular box on a plane bytea binary data ("byte array") character varying varchar character varying [ (n) ] varchar [ (n) ] variable-length character string:变长字符串(长度有限制) var...
布尔类型(boolean type) 用于表示true或false mydb=# \d test_bool; Table "public.test_bool" Column | Type | Collation | Nullable | Default ---+---+---+---+--- flag | boolean | | | remark | text | | | mydb=# insert into test_bool (flag, remark) values ('t', 'True'), ...
double precision, integer, interval, numeric, decimal, real, smallint, time (with or without time zone), timestamp (with or without time zone), xml. SQL指定以下类型(或其拼写):bigint、bit、bit variation、boolean、char、character
v_bool boolean not null defalut false; 注:pl/sql中使用标量并给其赋初值的方式不同于其他的编程语言,需要在等号前加":" 2.2、标量使用的案例 作用:变量是存放pl/sql块中最普通的变量 输入一个员工号,显示雇员的姓名、工资、个人所得税(税率为0.03),代码如下: ...
The validation script converts the Boolean values of 1 to Y and 0 to N in the target table, and then it compares the values in the target table to the source table. To validate the rest of the data migration, enable data validation in the ta...
NameDescriptionStorage Size boolean state of true or false 1 byteCategory - Enumerated TypeUnlike other types, Enumerated Types need to be created using CREATE TYPE command. This type is used to store a static, ordered set of values, for example compass directions,i.e. NORTH, SOUTH, EAST,...
通过当前数据库的from pg_type;可以看到有哪些类型,新建的类型也可以看到,类型里面有存储,存储结构,p存储在当前的表里面,以不压缩的形式存储,e是存储在外面以不压缩的形式存储,m是存储在当前表压缩的形式存储,x存储在post表以压缩的形式存储。数据类型 Category Array types数组 Boolean types Boolean逻辑 Composite ...
Boolean The Boolean data type is designed to express two-state values such as true/false, on/off, yes/no, and null values. You would commonly use this data type to evaluate conditional statements. Control flow can be contingent on the outcome of either true or false, like when using the...
GET DIAGNOSTICS integer_var = ROW_COUNT; The second method to determine the effects of a command is to check the special variable named FOUND, which is of type boolean. FOUND starts out false within each PL/pgSQLfunction call. It is set by each of the following types of statements: ...