匿名块执行

神通数据库中的匿名块指的是以begin或declare开头，以end;结尾的语句块，比如：

DECLARE
    SYS_BPS_ACCcount INT;
BEGIN
  SYS_BPS_ACCcount := 0;
  SELECT COUNT(*) INTO SYS_BPS_ACCcount FROM sys_class WHERE RELNAME = 'SYS_BPS_ACC';IF SYS_BPS_ACCcount = 0
  THEN EXECUTE IMMEDIATE 'CREATE TABLE SYS_BPS_ACC( FID varchar(32) NOT NULL, CONSTRAINT SYS_BPS_ACC_PKEY PRIMARY KEY (FID) ) BINLOG ON ;';
  END IF;
END;