oracle - 在 PL/SQL 中创建表？

Question

我正在尝试在 PL/SQL 中创建一个表

我怎么能做到这一点？

不断得到

错误报告:

ORA-00933:“SQL 命令未正确结束”

这是我有错误的代码

DECLARE
  station_id_ms1  NUMBER :=10347;
  realtime_start  DATE   :=to_date('2012-01-01 00:00:00','YYYY-DD-MM HH24:MI:SS');
  realtime_end    DATE   :=to_date('2012-07-01 00:00:00','YYYY-DD-MM HH24:MI:SS');
BEGIN
  EXECUTE IMMEDIATE ('
  CREATE TABLE new_table_name
  AS
  SELECT
  ((realtime - to_date(''01-JAN-1970'',''DD-MON-YYYY'')) * (86400)) AS realtime_ms1,
  magnetic_ms_id,
  ADC_value_pp_2_mgntc_fld_amp(ch2_value,ch2_gain_value,magnetic_ms_id,2) AS B_x_ms1,
  ADC_value_pp_2_mgntc_fld_amp(ch1_value,ch1_gain_value,magnetic_ms_id,1) AS B_y_ms1,
  real_nanosecs2*4/3*360/20e6 AS phase_x_ms1,
  real_nanosecs1*4/3*360/20e6 AS phase_y_ms1
  FROM
      raw_mag
  WHERE
    magnetic_ms_id    = '||station_id_ms1||'
  AND realtime        > '||realtime_start||'
  AND realtime        < '||realtime_end||'
  AND ch1_tune_value  = 0
  AND realtime        < pkg_timezone.change_timezone(gettime,''CET'',''UTC'')
  ');  
END;

Answer 1

您应该在立即执行的 plsql-string 中进行字符到日期的转换。

您声明的日期将在串联中“反向转换”为 varchar2，并再次“重新转换”为日期以执行 create table 语句。在这两个转换中可能会发生“各种各样的事情”，因此您要确保在转换为日期时控制字符串的解释方式。

DECLARE
  station_id_ms1  NUMBER :=10347;
  realtime_start  VARCHAR2(100)   :='2012-01-01 00:00:00';
  realtime_end    VARCHAR2(100)   :='2012-07-01 00:00:00';
BEGIN
  EXECUTE IMMEDIATE ('
  CREATE TABLE new_table_name
  AS
  SELECT
  ((realtime - to_date(''01-JAN-1970'',''DD-MON-YYYY'')) * (86400)) AS realtime_ms1,
  magnetic_ms_id,
  ADC_value_pp_2_mgntc_fld_amp(ch2_value,ch2_gain_value,magnetic_ms_id,2) AS B_x_ms1,
  ADC_value_pp_2_mgntc_fld_amp(ch1_value,ch1_gain_value,magnetic_ms_id,1) AS B_y_ms1,
  real_nanosecs2*4/3*360/20e6 AS phase_x_ms1,
  real_nanosecs1*4/3*360/20e6 AS phase_y_ms1
  FROM
      raw_mag
  WHERE
    magnetic_ms_id    = '||station_id_ms1||'
  AND realtime        > to_date(''' || realtime_start || ''', ''YYYY-DD-MM HH24:MI:SS'')
  AND realtime        < to_date(''' || realtime_end   || ''', ''YYYY-DD-MM HH24:MI:SS'')
  AND ch1_tune_value  = 0
  AND realtime        < pkg_timezone.change_timezone(gettime,''CET'',''UTC'')
  ');  
END;