Question

我搜索了很多，很多人遇到了类似的问题，但似乎没有什么匹配。

这没问题：

create table CUSTOM_WORKFLOW_ID_COUNTER (
    id_ NUMBER (19) GENERATED by default on null as IDENTITY,
    type_ VARCHAR2(50 CHAR),
    masterId_ VARCHAR2(100 CHAR),
    counter_ NUMBER (19),
    primary key (id_)
    );

由于Oracle缺乏对“ drop table if exists ”的支持，我必须检查该表是否以其他方式存在：

  DECLARE cnt NUMBER;
  BEGIN
   SELECT COUNT(*) INTO cnt FROM user_tables WHERE table_name ='CUSTOM_WORKFLOW_ID_COUNTER';
   IF cnt <> 0 THEN
     EXECUTE IMMEDIATE 'DROP TABLE CUSTOM_WORKFLOW_ID_COUNTER';              
   END IF;       
 END;

两者都像魅力一样，但如果我尝试在一个SQL语句中执行：

  DECLARE cnt NUMBER;
  BEGIN
  SELECT COUNT(*) INTO cnt FROM user_tables WHERE table_name = 'CUSTOM_WORKFLOW_ID_COUNTER';
    IF cnt <> 0 THEN
      EXECUTE IMMEDIATE 'DROP TABLE CUSTOM_WORKFLOW_ID_COUNTER';              
    END IF;       
  END;
 create table CUSTOM_WORKFLOW_ID_COUNTER (
    id_ NUMBER (19) GENERATED by default on null as IDENTITY,
    type_ VARCHAR2(50 CHAR),
    masterId_ VARCHAR2(100 CHAR),
    counter_ NUMBER (19),
    primary key (id_)
    );

我明白了：

ORA-06550：Zeile 9，Spalte 1： PLS-00103：Fand das符号“创建” 06550. 00000 - “行％s，列％s：\ n％s” *原因：通常是PL / SQL编译错误。

如果我尝试在块内执行create语句，我会收到另一个错误：

  DECLARE cnt NUMBER;
  BEGIN
   SELECT COUNT(*) INTO cnt FROM user_tables WHERE table_name = 'CUSTOM_WORKFLOW_ID_COUNTER';
  IF cnt <> 0 THEN
   EXECUTE IMMEDIATE 'DROP TABLE CUSTOM_WORKFLOW_ID_COUNTER';
   EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
    id_ NUMBER (19) GENERATED by default on null as IDENTITY,
    type_ VARCHAR2(50 CHAR),
    masterId_ VARCHAR2(100 CHAR),
    counter_ NUMBER (19),
    primary key (id_)
    );';
 ELSE
    EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
    id_ NUMBER (19) GENERATED by default on null as IDENTITY,
    type_ VARCHAR2(50 CHAR),
    masterId_ VARCHAR2(100 CHAR),
    counter_ NUMBER (19),
    primary key (id_)
    );';      
  END IF;
END;

我收到此错误：

ORA-00922：Fehlendeoderungültige选项 ORA-06512：在Zeile 18中 00922. 00000 - “遗失或无效选项”

我做错了什么？

编辑：删除分号后：

  DECLARE cnt NUMBER;
  BEGIN
   SELECT COUNT(*) INTO cnt FROM user_tables WHERE table_name = 'CUSTOM_WORKFLOW_ID_COUNTER';
 IF cnt <> 0 THEN
  EXECUTE IMMEDIATE 'DROP TABLE CUSTOM_WORKFLOW_ID_COUNTER';
  EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
id_ NUMBER (19) GENERATED by default on null as IDENTITY,
type_ VARCHAR2(50 CHAR),
masterId_ VARCHAR2(100 CHAR),
counter_ NUMBER (19),
primary key (id_)
)';
ELSE
EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
id_ NUMBER (19) GENERATED by default on null as IDENTITY,
type_ VARCHAR2(50 CHAR),
masterId_ VARCHAR2(100 CHAR),
counter_ NUMBER (19),
primary key (id_)
)';      
 END IF;
END;

我收到另一个错误;）

ORA-00054：Ressource belegt und Anforderung mit NOWAIT angegeben oder Timeout abgelaufen ORA-06512：在Zeile 5中 00054. 00000 - “资源繁忙，并在指定NOWAIT或超时到期时获取” *原因：感兴趣的资源很忙。 *操作：必要时重试或增加超时。

但这似乎是另一个问题。

Answer 1

只需删除create table末尾的分号：

  DECLARE cnt NUMBER;
  BEGIN
   SELECT COUNT(*) INTO cnt FROM user_tables WHERE table_name = 'CUSTOM_WORKFLOW_ID_COUNTER';
  IF cnt <> 0 THEN
   EXECUTE IMMEDIATE 'DROP TABLE CUSTOM_WORKFLOW_ID_COUNTER';
   EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
    id_ NUMBER (19) GENERATED by default on null as IDENTITY,
    type_ VARCHAR2(50 CHAR),
    masterId_ VARCHAR2(100 CHAR),
    counter_ NUMBER (19),
    primary key (id_)
    )';
 ELSE
    EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
    id_ NUMBER (19) GENERATED by default on null as IDENTITY,
    type_ VARCHAR2(50 CHAR),
    masterId_ VARCHAR2(100 CHAR),
    counter_ NUMBER (19),
    primary key (id_)
    )';      
  END IF;
END;

Answer 2

问题是由于分号为黄色（第12行和第20行）：

EXECUTE IMMEDIATE 'create table CUSTOM_WORKFLOW_ID_COUNTER (
id_ NUMBER (19) GENERATED by default on null as IDENTITY,
type_ VARCHAR2(50 CHAR),
masterId_ VARCHAR2(100 CHAR),
counter_ NUMBER (19),
primary key (id_)
)

'

Oracle SQL“EXECUTE IMMEDIATE”ORA-00922/06512创建表

2 个答案: