sql - SQL 错误：ORA-00936：缺少表达式

Question

Qns : 项目描述和任何名为 Jessie Stange 的患者的所有治疗的治疗日期（即 GivenName 是 Jessie，FamilyName 是 Stange）

我写的：

SELECT DISTINCT Description, Date as treatmentDate
WHERE doothey.Patient P, doothey.Account A, doothey.AccountLine AL, doothey.Item.I
AND P.PatientID = A.PatientID
AND A.AccountNo = AL.AccountNo
AND AL.ItemNo = I.ItemNo
AND (p.FamilyName = 'Stange' AND p.GivenName = 'Jessie');

错误：

Error at Command Line:1 Column:30
Error report:
SQL Error: ORA-00936: missing expression
00936. 00000 -  "missing expression"
*Cause:    
*Action:

缺少的表达是什么？

score 11 · Accepted Answer

Your statement is calling SELECT and WHERE but does not specify which TABLE or record set you would like to SELECT FROM.

SELECT DISTINCT Description, Date as treatmentDate
FROM (TABLE_NAME or SUBQUERY)<br> --This is missing from your query.
WHERE doothey.Patient P, doothey.Account A, doothey.AccountLine AL, doothey.Item.I
AND P.PatientID = A.PatientID
AND A.AccountNo = AL.AccountNo
AND AL.ItemNo = I.ItemNo
AND (p.FamilyName = 'Stange' AND p.GivenName = 'Jessie');

score 2 · Accepted Answer

你犯了两个错误。我认为您放错了 FROM 和 WHERE 关键字。

SELECT DISTINCT Description, Date as treatmentDate
     FROM doothey.Patient P, doothey.Account A, doothey.AccountLine AL,  doothey.Item.I --Here you use "." operator to "I" alias 
  WHERE  -- WHERE should be located here. 
   P.PatientID = A.PatientID
    AND A.AccountNo = AL.AccountNo
    AND AL.ItemNo = I.ItemNo
    AND (p.FamilyName = 'Stange' AND p.GivenName = 'Jessie');

score 0 · Accepted Answer

在上面的查询中，当我们尝试合并两个或多个表时，有必要使用连接并指定描述和日期的别名（这意味着您从中获取描述和日期值的表）

SELECT DISTINCT Description, Date as treatmentDate  
FROM doothey.Patient P  
INNER JOIN doothey.Account A ON P.PatientID = A.PatientID  
INNER JOIN doothey.AccountLine AL ON A.AccountNo = AL.AccountNo  
INNER JOIN doothey.Item I ON AL.ItemNo = I.ItemNo  
WHERE p.FamilyName = 'Stange' AND p.GivenName = 'Jessie';

score 0 · Accepted Answer

您没有对表使用 FROM 表达式

SELECT DISTINCT Description, Date as treatmentDate
**FROM <A TABLE>**
WHERE doothey.Patient P, doothey.Account A, doothey.AccountLine AL, doothey.Item.I
AND P.PatientID = A.PatientID
AND A.AccountNo = AL.AccountNo
AND AL.ItemNo = I.ItemNo
AND (p.FamilyName = 'Stange' AND p.GivenName = 'Jessie');

score -2 · Accepted Answer

  1  

     选择 ename 作为名称，
      2 萨尔作为工资，
      3部门，部门，
      4 来自（TABLE_NAME 或 SUBQUERY）
      5 emp，emp2，部门
      6 哪里
      7 emp.deptno = 部门.deptno 和
      8 emp2.deptno = emp.deptno
      9* 按部门名称排序

 来自（TABLE_NAME 或 SUBQUERY）
 *
第 4 行的错误：
ORA-00936: 缺少表达式`选择 ename 作为名称，
 萨尔作为工资，
 部门，部门，
  来自（TABLE_NAME 或 SUBQUERY）
  emp, emp2, 部门
   在哪里
  emp.deptno = dept.deptno 和
  emp2.deptno = emp.deptno
  按 dept.dname 排序

sql - SQL 错误：ORA-00936：缺少表达式

5 回答 5

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