Question

当我尝试创建表时，它失败并显示ORA-00904: : invalid identifier。这是我的桌子。

create table eas_citizen_text_info (
    UID bigint(12) Primary key,
    Gender char(15),
    First_name varchar(30),
    Middle_name varchar(30),
    Last_name varchar(30),
    DOB date Not null,
    Age int(3),
    Caste varchar(30),
    Martial_status varchar(15),
    Address varchar(255),
    House_No_Bldg_Apt varchar(75),
    Street_Road_Lane varchar(75),
    Landmark varchar(75),
    Area_locality_sector varchar(75),
    Village_Town_City varchar(75),
    Post_office varchar(75),
    District varchar(25),
    Sub_district varchar(25),
    Pincode int(15),
    State varchar(30),
    Father_name varchar(200),
    Mother_name varchar(200),
    Guardian_name varchar(200)
);

Answer 1

使用Oracle的数据类型。定义具有0精度的数字列以使它们成为整数。使用varchar2而不是varchar（尽管Oracle会为您更改）。

create table eas_citizen_text_info (
    UID number(12,0) not null Primary key,
    Gender varchar2(15),
    First_name varchar2(30),
    Middle_name varchar2(30),
    Last_name varchar2(30),
    DOB date Not null,
    Age number(3,0),
    Caste varchar2(30),
    Martial_status varchar2(15),
    Address varchar2(255),
    House_No_Bldg_Apt varchar2(75),
    Street_Road_Lane varchar2(75),
    Landmark varchar2(75),
    Area_locality_sector varchar2(75),
    Village_Town_City varchar2(75),
    Post_office varchar2(75),
    District varchar2(25),
    Sub_district varchar2(25),
    Pincode number(15,0),
    State varchar2(30),
    Father_name varchar2(200),
    Mother_name varchar2(200),
    Guardian_name varchar2(200)
);

但是我们仍然会收到错误：

  UID number(12,0) not null Primary key,
    *
ERROR at line 2:
ORA-00904: : invalid identifier


SQL>

但是Oracle已经足够慷慨地指出哪个列是导致错误的原因。如果我们检查文档，我们会在SQL保留关键字列表中找到UID。 Find that here

解决方案很简单：将UID更改为安全的内容，例如CITIZEN_UID，可以创建表格：

SQL> create table eas_citizen_text_info (
  2      citizen_UID number(12,0) not null Primary key,
  3      Gender varchar2(15),
  4      First_name varchar2(30),
  5      Middle_name varchar2(30),
  6      Last_name varchar2(30),
  7      DOB date Not null,
  8      Age number(3,0),
  9      Caste varchar2(30),
 10      Martial_status varchar2(15),
 11      Address varchar2(255),
 12      House_No_Bldg_Apt varchar2(75),
 13      Street_Road_Lane varchar2(75),
 14      Landmark varchar2(75),
 15      Area_locality_sector varchar2(75),
 16      Village_Town_City varchar2(75),
 17      Post_office varchar2(75),
 18      District varchar2(25),
 19      Sub_district varchar2(25),
 20      Pincode number(15,0),
 21      State varchar2(30),
 22      Father_name varchar2(200),
 23      Mother_name varchar2(200),
 24      Guardian_name varchar2(200)
 25  );

Table created.

SQL>

Answer 2

Oracle，SQL Server，MySQL等数据库语言不支持大于12位的整数长度以及大整数。所以你改变了你的查询：

import { channel } from 'redux-saga'
import { select } from 'redux-saga/effects'

const socketChannel = channel()

function subscribe(socket) {
  return eventChannel(emit => {
     socket.on('reconnection', () => {
       socketChannel.put({ type: RECONNECTION })
     })
  })
}

export function* watchSocketChannel() {
  while (true) {
    const action = yield take(socketChannel)

    if (action.type === RECONNECTION) {
      const lastMessageTimestamp = yield select(selectors.getLastMessageTimestamp)
      ...
    }
  }
}

Answer 3

您的第一列声明中出现错误＆＃39; UID bigint（12）主键＆＃39; 。使用号码＆＃39;而不是＆＃39; bigint＆＃39; as UID号码（12）主键 请参阅此图片以供参考[它一定会对您有帮助。[] [1]] [1]

如何在创建表时解决“ORA-00904 ::无效标识符”？

3 个答案: