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【DM版本】:V8
【操作系统】：linux 麒麟
【CPU】:
【问题描述】*：该段sql语句第一次执行提示 语法分析错误
第二次执行，提示执行成功。语句是合法的 oracle 语句

具体sql语句如下：

declare 
  tableExist number;
begin
  select count(1) into tableExist from user_tables where TABLE_NAME = upper('T_REALACCOUNTOPTINSTRUMENT');
  if tableExist = 0 then
    execute immediate 'create table T_REALACCOUNTOPTINSTRUMENT
    (
       ID        INTEGER not null,
       ACCOUNTID INTEGER not null,
       PRODUCTID VARCHAR2(100) default '''' not null,
       ISPRODUCT INTEGER not null,
       MAINFORCE INTEGER default 0
    )';
    execute immediate 'comment on column T_REALACCOUNTOPTINSTRUMENT.MAINFORCE is ''主力次主力 0 未配置   1主力  2次主力''';
    execute immediate 'alter table T_REALACCOUNTOPTINSTRUMENT add primary key (ID) using index ';
    execute immediate 'create index T_ACCOUNTOPTINSTRUMENT on T_REALACCOUNTOPTINSTRUMENT(ACCOUNTID)';
  end if;
end;


declare 
  tableExist number;
begin
  select count(1) into tableExist from user_tables where TABLE_NAME = upper('t_realaccoptinstrumentNight');
  if tableExist = 0 then
    execute immediate 'create table t_realaccoptinstrumentNight
    (
       ID        INTEGER not null,
       ACCOUNTID INTEGER not null,
       PRODUCTID VARCHAR2(100) default '''' not null,
       ISPRODUCT INTEGER not null,
       MAINFORCE INTEGER default 0
    )';
    execute immediate 'comment on column t_realaccoptinstrumentNight.MAINFORCE is ''主力次主力 0 未配置   1主力  2次主力''';
    execute immediate 'alter table t_realaccoptinstrumentNight add primary key (ID) using index ';
    execute immediate 'create index t_realaccoptinstrumentNight on t_realaccoptinstrumentNight(ACCOUNTID)';
  end if;
end;