Create a table/sequence/comment/primary key in oracle

DECLARE iCount number (2): = 0; begin select count (*) INTO iCount FROM user_sequences u WHERE u. sequence_name = 'seq _ TCAPITALNOTIFY '; www.2cto.com IF iCount = 0 THEN/* create sequence */execute immediate 'create sequence SEQ_TCAPITALNOTIFY minvalue 1 nomaxvalue start with 1 increment by 1'; end if; select count (*) INTO iCount FROM user_tables u WHERE u. TABLE_NAME = 'tcapital=y '; IF iCount = 0 THEN/* create table tcapital=y */execute immediate 'create table tcapital=y (L_SERIALNO number (11) not null primary key, D_DATE DATE not null, c_CUSTNO varchar2 (12) not null, F_BALENCE NUMBER (16,2), C_FUNDCODE VARCHAR2 (6), D_REPLYPAYTIME DATE, C_ORGCONTACT VARCHAR2 (2000), C_ORGTEL VARCHAR2 (2000), D_NOTIFICATIONTIME DATE, c_ISCERTIFICATE CHAR (1), C_REALPAYTIME DATE, C_MEMO CHAR (1), C_ISCANCEL VARCHAR2 (2000), C_CREATOR VARCHAR2 (16), D_CREATEDATE DATE) nologging tablespace crm_htable '; www.2cto.com execute immediate 'comment on table TCAPITALNOTIFY is ''' capital notification ''; execute immediate 'comment on column TCAPITALNOTIFY. rochelle serialno is ''serial number '''; execute immediate 'comment on column TCAPITALNOTIFY. d_DATE is ''dat''; execute immediate 'comment on column TCAPITALNOTIFY. c_CUSTNO is ''account name'''; execute immediate 'comment on column TCAPITALNOTIFY. f_BALENCE is '''purchase funds (RMB) '''; EXECUTE IMMEDIATE 'comment on column TCAPITALNOTIFY. c_FUNDCODE is ''buy products'''; execute immediate 'comment on column TCAPITALNOTIFY. d_REPLYPAYTIME is ''institution reply fund transfer time '''; execute immediate 'comment on column TCAPITALNOTIFY. c_ORGCONTACT is ''Organization Contact '''; execute immediate 'comment on column TCAPITALNOTIFY. c_ORGTEL is ''organization contact number '''; execute immediate 'comment on column TCAPITALNOTIFY. d_icationicationtime is ''our notification time '''; execute immediate 'comment on column TCAPITALNOTIFY. c_ISCERTIFICATE is ''whether to provide the transfer credential '''; execute immediate 'comment on column TCAPITALNOTIFY. c_REALPAYTIME is '''actual receipt time of funds '''; www.2cto.com execute immediate 'comment on column TCAPITALNOTIFY. c_ISCANCEL is ''withdraw '''; execute immediate 'comment on column TCAPITALNOTIFY. c_MEMO is ''note''; execute immediate 'comment on column TCAPITALNOTIFY. c_CREATOR is ''created by '''; execute immediate 'comment on column TCAPITALNOTIFY. d_CREATEDATE is ''create date '''; end if; END; // from the columns of fujianianhua