我的 Oracle 语法有什么问题？

Question

我有一个需要转换为 Oracle 的 SQL 存储过程。我在语法上遇到了一些问题。

我得到的当前错误是：

错误（75,1）：PLS-00103：在预期以下情况之一时遇到符号“DROP”：（begin case declare end exception exit for goto if loop mod null pragma raise return select update while with

我想我还有很多。有人可以帮我弄清楚我做错了什么吗？

这是我所拥有的：

create or replace PROCEDURE "PROCEDURE1" 
(
  IN_FEATURENAME IN NVARCHAR2 
, OUT_O_RC OUT SYS_REFCURSOR 
) AS


BEGIN
execute immediate 'CREATE TABLE t_name_match( ' || 
'KBID       int     NOT NULL, ' || 
'SYMBOLID   int     NOT NULL,' || 
'FEATURE_NAME   varchar(30) NULL';

execute immediate 'CREATE TABLE t_compat_match( ' || 
'KBID       int     NOT NULL, ' || 
'SYMBOLID   int     NOT NULL,' || 
'FEATURE_NAME   varchar(30) NULL';
/*******************************************************************************    ***
** Name matches
    ********************************************************************************    ***/
/*
** Load matches to Name Table
*/
INSERT INTO t_name_match (KBID, SYMBOLID, FEATURE_NAME)
SELECT  KBID, SYMBOLID, FEATURENAME
  from  FEATURE_MASTER
 where  FEATURENAME like IN_FEATURENAME;

/*******************************************************************************    ***
** Compatibility Statement matches
********************************************************************************    ***/
/*
** Load matches to Compatibility table
*/
 INSERT INTO t_compat_match (KBID, CHARID, SYMBOLID)
SELECT  KBID, CHARID, SYMBOLID
  from  FEATURE_COMPAT
 where  INSTR(IN_FEATURENAME, LINE) > 0;

INSERT INTO t_name_match (KBID, SYMBOLID, FEATURE_NAME)
 SELECT cm.KBID, cm.SYMBOLID, NULL
   from (SELECT DISTINCT KBID, SYMBOLID
        from t_compat_match)    cm
  where NOT EXISTS  (SELECT 'X'
               from t_name_match nm
              where nm.KBID     = cm.KBID
                and nm.SYMBOLID = cm.SYMBOLID);


UPDATE  t_name_match

  SET FEATURE_NAME = (SELECT FEATURENAME
  from  FEATURE_MASTER

  where nm.FEATURE_NAME IS NULL
   and  fm.KBID     = nm.KBID
    and fm.SYMBOLID = nm.SYMBOLID);

 OPEN OUT_O_RC FOR
/*******************************************************************************    ***
** Return result set
********************************************************************************     ***/
SELECT  DISTINCT m.MODELNAME, m.VERSION, m.PLANTID, m.FROMDATE, m.TODATE,
     m.BUILD, m.KBID, nm.SYMBOLID, nm.FEATURE_NAME as FEATURENAME
  FROM  t_name_match        nm,
     KB_MASTER      m
  WHERE     m.KBID = nm.KBID 
    AND     m.MODELGROUP    = 'F'
 ORDER BY m.MODELNAME, m.VERSION;

/*
** Clean up
*/

DROP TABLE #t_name_match
DROP TABLE #t_compat_match

RETURN 0;
END PROCEDURE1;

这是原始的SQL代码：

**  Create the stored procedure
*/
ALTER PROCEDURE [dbo].[fcs_feature_usage]
(   @search_string      varchar(50),
    @debug_flag     char(1)     = 'N'
)
as

DECLARE @error          int,
    @search_string_like varchar(51)

SELECT  @search_string_like     = Upper(@search_string) + '%'

IF (@debug_flag = 'Y') OR (@debug_flag = 'X')
    SELECT  GetDate() as "fcs_feature_usage Started"

/*
** Store matching results in intermediate tables (required to avoid 
** JOIN, DISTINCT, and SORT between two, 2 million row tables).
*/
CREATE TABLE #t_name_match
(   KBID        int     NOT NULL,
    SYMBOLID    int     NOT NULL,
    FEATURE_NAME    varchar(30) NULL
)

CREATE TABLE #t_compat_match
(   KBID        int     NOT NULL,
    CHARID      int     NOT NULL,
    SYMBOLID    int     NOT NULL
)
/*******************************************************************************    ***
** Name matches
********************************************************************************    ***/
/*
** Load matches to Name Table
*/
INSERT INTO #t_name_match (KBID, SYMBOLID, FEATURE_NAME)
SELECT  KBID, SYMBOLID, FEATURE_NAME
  from  FCS..T_FEATURE_MASTER
 where  feature_name like @search_string_like

select  @error = @@error
IF (@error <> 0)
   BEGIN
    GOTO error_routine
   END

IF (@debug_flag = 'Y')
    SELECT  GetDate() as "#t_name_match Loaded"

/*******************************************************************************    ***
** Compatibility Statement matches
********************************************************************************    ***/
/*
** Load matches to Compatibility table
*/
INSERT INTO #t_compat_match (KBID, CHARID, SYMBOLID)
SELECT  KBID, CHARID, SYMBOLID
  from  FCS..T_FEATURE_COMPAT
 where  charindex(@search_string, LINE) > 0

select  @error = @@error
IF (@error <> 0)
   BEGIN
    GOTO error_routine
   END

IF (@debug_flag = 'Y')
    SELECT  GetDate() as "#t_compat_match Loaded"

/*
** Add to the name matches table a list of features which had 
** the given string in one of their compatibility statements.
**
** The below join, results in a complete index scan, so broke into
** two statements (INSERT & UPDATE):
**
INSERT INTO #t_name_match (KBID, SYMBOLID, FEATURE_NAME)
SELECT  cm.KBID, cm.SYMBOLID, fm.FEATURE_NAME
  from  FCDB..T_FEATURE_MASTER      fm,
    (SELECT DISTINCT KBID, SYMBOLID
       from #t_compat_match)    cm
 where  fm.KBID     = cm.KBID
   and  fm.SYMBOLID = cm.SYMBOLID
   and  NOT EXISTS  (SELECT 'X'
               from #t_name_match nm
              where nm.KBID     = cm.KBID
                and nm.SYMBOLID = cm.SYMBOLID)
*/
INSERT INTO #t_name_match (KBID, SYMBOLID, FEATURE_NAME)
SELECT  cm.KBID, cm.SYMBOLID, NULL
  from  (SELECT DISTINCT KBID, SYMBOLID
       from #t_compat_match)    cm
 where  NOT EXISTS  (SELECT 'X'
               from #t_name_match nm
              where nm.KBID     = cm.KBID
                and nm.SYMBOLID = cm.SYMBOLID)

select  @error = @@error
IF (@error <> 0)
   BEGIN
    GOTO error_routine
   END

UPDATE  #t_name_match
   set  FEATURE_NAME = fm.FEATURE_NAME
  from  #t_name_match       nm,
    FCS..T_FEATURE_MASTER   fm
 where  nm.FEATURE_NAME IS NULL
   and  fm.KBID     = nm.KBID
   and  fm.SYMBOLID = nm.SYMBOLID

select  @error = @@error
IF (@error <> 0)
   BEGIN
    GOTO error_routine
   END

IF (@debug_flag = 'Y')
    SELECT  GetDate() as "Added #t_compat_match to #t_name_match"

/*******************************************************************************    ***
** Return result set
    ********************************************************************************        ***/
SELECT  DISTINCT m.Model_Name, m.Version, m.plant_id fac_cd,     m.FROM_DATE,           m.TO_DATE,
        m.build, m.KBID, nm.SYMBOLID, left(nm.FEATURE_NAME,12) featureName
      FROM  #t_name_match       nm,
       T_MODEL_MASTER       m
         WHERE  m.KBID      = nm.KBID 
       AND  m.Model_Group   = 'F'
    ORDER BY m.Model_Name, m.version

    /*
    ** Clean up
    */
DROP TABLE #t_name_match
DROP TABLE #t_compat_match

IF (@debug_flag = 'Y') OR (@debug_flag = 'X')
    SELECT  GetDate() as "fcs_feature_usage Completed"

RETURN 0

/*********************************************************************
** Error Processing Routine. 
**********************************************************************/
error_routine:

DROP TABLE #t_name_match
 DROP TABLE #t_compat_match

RETURN  @error

Answer 1

您几乎肯定不想在 Oracle 过程中创建和删除表。 Oracle 临时表与 SQL Server 临时表有很大不同。在 SQL Server 中，临时表的定义对于会话来说是本地的（假设表名以 # 为前缀）。 Oracle 没有这种本地临时表的概念。 Oracle 中的临时表是全局的——定义对所有会话可见，数据仅对本地会话可见。这意味着您将创建一次临时表（在您定义永久表的同时在您的过程之外），并且您不会在过程中删除它们。

类似

CREATE GLOBAL TEMPORARY TABLE t_name_match
(   KBID        int     NOT NULL,
    SYMBOLID    int     NOT NULL,
    FEATURE_NAME    varchar2(30) NULL
)
ON COMMIT DELETE ROWS;

CREATE GLOBAL TEMPORARY TABLE t_compat_match
(   KBID        int     NOT NULL,
    CHARID      int     NOT NULL,
    SYMBOLID    int     NOT NULL
)
ON COMMIT DELETE ROWS;


create or replace PROCEDURE "PROCEDURE1" 
(
  IN_FEATURENAME IN NVARCHAR2 
, OUT_O_RC OUT SYS_REFCURSOR 
) AS


BEGIN
/*******************************************************************************    ***
** Name matches
    ********************************************************************************    ***/
/*
** Load matches to Name Table
*/
INSERT INTO t_name_match (KBID, SYMBOLID, FEATURE_NAME)
SELECT  KBID, SYMBOLID, FEATURENAME
  from  FEATURE_MASTER
 where  FEATURENAME like IN_FEATURENAME;

/*******************************************************************************    ***
** Compatibility Statement matches
********************************************************************************    ***/
/*
** Load matches to Compatibility table
*/
 INSERT INTO t_compat_match (KBID, CHARID, SYMBOLID)
SELECT  KBID, CHARID, SYMBOLID
  from  FEATURE_COMPAT
 where  INSTR(IN_FEATURENAME, LINE) > 0;

INSERT INTO t_name_match (KBID, SYMBOLID, FEATURE_NAME)
 SELECT cm.KBID, cm.SYMBOLID, NULL
   from (SELECT DISTINCT KBID, SYMBOLID
        from t_compat_match)    cm
  where NOT EXISTS  (SELECT 'X'
               from t_name_match nm
              where nm.KBID     = cm.KBID
                and nm.SYMBOLID = cm.SYMBOLID);


UPDATE  t_name_match

  SET FEATURE_NAME = (SELECT FEATURENAME
  from  FEATURE_MASTER

  where nm.FEATURE_NAME IS NULL
   and  fm.KBID     = nm.KBID
    and fm.SYMBOLID = nm.SYMBOLID);

 OPEN OUT_O_RC FOR
/*******************************************************************************    ***
** Return result set
********************************************************************************     ***/
SELECT  DISTINCT m.MODELNAME, m.VERSION, m.PLANTID, m.FROMDATE, m.TODATE,
     m.BUILD, m.KBID, nm.SYMBOLID, nm.FEATURE_NAME as FEATURENAME
  FROM  t_name_match        nm,
     KB_MASTER      m
  WHERE     m.KBID = nm.KBID 
    AND     m.MODELGROUP    = 'F'
 ORDER BY m.MODELNAME, m.VERSION;

END PROCEDURE1;

可能会奏效。事实上，您在注释块之前有OPEN OUT_O_RC FOR，在它之后有SELECT，这使得这段代码有点难以理解。我也没有寻找其他语法错误。

当然，在 Oracle 中，首先使用临时表是很不常见的——直接移植并在 Oracle 中为每个在 SQL Server 中使用临时表的过程使用临时表会创建一些非常不习惯的Oracle 代码的效率可能低于实际水平。如果不同的 SQL Server 过程创建具有相同名称和不同列集的临时表，那么在系统中最终会出现成百上千个临时表也可能很烦人。使用本地集合可能会更好地为您服务，或者只是不先实现数据而直接查询底层永久表。这取决于您首先在 SQL Server 中使用临时表的原因。例如，请参阅alternatives to temporary tables 上的此线程。

Answer 2

DROP 是一个在 PL/SQL 代码中无效的 DDL 语句。

使用“立即执行”替换它

execute immediate "DROP TABLE t_name_match"