DATABASE_URL=postgresql://... npm run pg-to-ts-generate 以下是我测试数据库的代码片段。它只包含一个名为users的表。// ./pg-to-ts-db.d.ts // Table usersexport interface Users { id: number; first_name: string; last_name: string; email: string; country: string | null;}export...
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) varchar character char character [ (n) ] char [ (n) ] fixed-length character string:定长字符串 char cidr ipv4 or ipv6 network address ...
| type_function_name attrs opt_type_modifiers { $$ = makeTypeNameFromNameList(lcons(makeString($1), $2)); $$->typmods = $3; $$->location = @1; } /* Type/function identifier --- names that can be type or function names. */ type_function_name: IDENT { $$ = $1; } | unre...
Category - Network Address Type These Data Type stores store IPv4, IPv6, and MAC addresses. Category - Bit String Type Bit String Types are used to store bit masks. They are either 0 or 1. There are two bit types - bit(n) and bit varying(n), where n is a positive integer. Catego...
to_number(string, format) 函数用于将字符串转换为数字。 SELECTto_number('￥125.8','L999D9');to_number|---|125.8| 其中,格式字符串中的 L 表示本地货币符号。 隐式类型转换 除了显式使用类型转换函数或运算符之外,很多时候 PostgreSQL 会自动执行数据类型的隐式转换。 SELECT1+'...
String createTableFirstLine=String.format("CREATE TABLE %s (",tableFullyQualifiedName); 组装sql:主键列 这里涉及数据类型转换,如mysql中的bigint,在pg中,使用bigserial即可: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 String dataType=primaryKeyColumnDefinition.getColDataType().getDataType();if(Ob...
四、Bit String 类型 Bit strings是 1 和 0 的字符串。它们可用于存储或可视化位掩码。有两种 SQL 位类型:bit(n) 和 bit varying(n),其中 n 是一个正整数。 位类型数据必须与长度 n 完全匹配;尝试存储较短或较长的位串是错误的。位变化数据是可变长度的,最大长度为 n;较长的字符串将被拒绝。写入没有...
该字段包含以下元数据信息: Debezium versionConnector type and nameDatabase and table that contains the new rowStringified JSON array of additional offset information. The first value is always the last committed LSN, the second value is always the current LSN. Either value may be nullSchema ...
select locktype,datname,relation::regclass,page,tuple,virtualxid,transactionid::text,classid::regclass,objid,objsubid, string_agg( 'Pid: '||case when pid is null then 'NULL' else pid::text end||chr(10)|| 'Lock_Granted: '||case when granted is null then 'NULL' else granted::text ...
2) PostgreSQL Varchar Data Type The PostgreSQL Varchar data type is used to store characters of indefinite length based on the parameter n. It can store a string up to 65,535 bytes long. In the PostgreSQL Varchar data type i. e. Varchar(n), n is used to denote the character length li...