我正在使用Oracle 11g R2,我想创建一些用户表。当我运行查询。它创建了几个表并生成了 java.sql.SQLSyntaxErrorException:ORA-00955:现有对象已经使用了名称异常。
Connection con=prepareConnection();
Statement st=con.createStatement();
StringBuilder sb=new StringBuilder(1024);
sb.append("create table ").append(uname).append("(MESSAGES CLOB,LINKS VARCHAR2(150),FRIENDS VARCHAR2(50),COMMENTS CLOB,LIKES VARCHAR2(10),UNLIKES VARCHAR2(10),SHARES BLOB,QSTNS CLOB,ANS CLOB,UPDATES BLOB,THEMS VARCHAR2(100),WORDS CLOB,NOTIFICATION CLOB,REQUESTS VARCHAR2(100),TIPS CLOB,TAG VARCHAR2(50))");
String Query=sb.toString();
st.executeUpdate(Query);
Statement st1=con.createStatement();
StringBuilder sb1=new StringBuilder(1024);
sb1.append("create table ").append(uname).append("VIALBUM(ALBUMID NUMBER NOT NULL, ALBUMNAME VARCHAR2(225) NOT NULL, CONSTRAINT ").append(uname).append("VIALBUM_PK PRIMARY KEY(ALBUMID)ENABLE)");
String Query1=sb1.toString();
st1.executeUpdate(Query1);
Statement st12=con.createStatement();
StringBuilder sb12=new StringBuilder(1024);
sb12.append("CREATE INDEX ").append(uname).append("VIALBUM_INDEX ON ").append(uname).append("VIALBUM(ALBUMNAME)");
String Query12=sb12.toString();
st12.executeUpdate(Query12);
Statement st11=con.createStatement();
StringBuilder sb11=new StringBuilder(1024);
sb11.append("create table ").append(uname).append("VIDEO(VIDEOID NUMBER NOT NULL, VIDEONAME VARCHAR2(225) NOT NULL, VIDEOFULL BLOB NOT NULL, VIDEODISC VARCHAR2(225), ALBUMID NUMBER NOT NULL, CONSTRAINT ").append(uname).append("VIDEO_PK PRIMARY KEY(VIDEOID)ENABLE)");
String Query11=sb11.toString();
st11.executeUpdate(Query11);
Statement st13=con.createStatement();
StringBuilder sb13=new StringBuilder(1024);
sb13.append("ALTER TABLE ").append(uname).append("VIDEO ADD CONSTRAINT ").append(uname).append("VIDEO_").append(uname).append("VIALBUM_FK1 FOREIGN KEY(ALBUMID)REFERENCES ").append(uname).append("VIALBUM(ALBUMID)ENABLE");
String Query13=sb13.toString();
st13.executeUpdate(Query13);
Statement st14=con.createStatement();
StringBuilder sb14=new StringBuilder(1024);
sb14.append("CREATE INDEX ").append(uname).append("VIDEO_INDEX ON ").append(uname).append("VIDEO (VIDEONAME)");
String Query14=sb14.toString();
st14.executeUpdate(Query14);
Statement st2=con.createStatement();
StringBuilder sb2=new StringBuilder(1024);
sb2.append("create table ").append(uname).append("ALBUM(ALBUMID NUMBER NOT NULL, ALBUMNAME VARCHAR2(225) NOT NULL, CONSTRAINT ").append(uname).append("ALBUM_PK PRIMARY KEY(ALBUMID)ENABLE)");
String Query2=sb2.toString();
st2.executeUpdate(Query2);
Statement st22=con.createStatement();
StringBuilder sb22=new StringBuilder(1024);
sb22.append("CREATE INDEX ").append(uname).append("ALBUM_INDEX ON ").append(uname).append("ALBUM(ALBUMNAME)");
String Query22=sb22.toString();
st22.executeUpdate(Query22);
直到上面的语句才能正确执行。其余的语句不会被执行。它会抛出异常。
Statement st21=con.createStatement();
StringBuilder sb21=new StringBuilder(1024);
sb21.append("create table ").append(uname).append("IMAGE(IMAGEID NUMBER NOT NULL, IMAGENAME VARCHAR2(225) NOT NULL, IMAGEFULL BLOB NOT NULL, IMAGEDISC VARCHAR2(225), ALBUMID NUMBER NOT NULL, CONSTRAINT ").append(uname).append("IMAGE_PK PRIMARY KEY(IMAGEID)ENABLE)");
String Query21=sb11.toString();
st21.executeUpdate(Query21);
Statement st23=con.createStatement();
StringBuilder sb23=new StringBuilder(1024);
sb23.append("ALTER TABLE ").append(uname).append("IMAGE ADD CONSTRAINT ").append(uname).append("IMAGE_").append(uname).append("ALBUM_FK1 FOREIGN KEY(ALBUMID)REFERENCES ").append(uname).append("ALBUM(ALBUMID)ENABLE");
String Query23=sb23.toString();
st23.executeUpdate(Query23);
Statement st24=con.createStatement();
StringBuilder sb24=new StringBuilder(1024);
sb24.append("CREATE INDEX ").append(uname).append("IMAGE_INDEX ON ").append(uname).append("IMAGE (IMAGENAME)");
String Query24=sb24.toString();
st24.executeUpdate(Query24);
Statement st3=con.createStatement();
StringBuilder sb3=new StringBuilder(1024);
sb3.append("create table ").append(uname).append("MUALBUM(ALBUMID NUMBER NOT NULL, ALBUMNAME VARCHAR2(225) NOT NULL, CONSTRAINT ").append(uname).append("MUALBUM_PK PRIMARY KEY(ALBUMID)ENABLE)");
String Query3=sb3.toString();
st3.executeUpdate(Query3);
Statement st32=con.createStatement();
StringBuilder sb32=new StringBuilder(1024);
sb32.append("CREATE INDEX ").append(uname).append("MUALBUM_INDEX ON ").append(uname).append("MUALBUM(ALBUMNAME)");
String Query32=sb12.toString();
st32.executeUpdate(Query32);
Statement st31=con.createStatement();
StringBuilder sb31=new StringBuilder(1024);
sb31.append("create table ").append(uname).append("SONG(SONGID NUMBER NOT NULL, SONGNAME VARCHAR2(225) NOT NULL, SONGFULL BLOB NOT NULL, SONGDISC VARCHAR2(225), ALBUMID NUMBER NOT NULL, CONSTRAINT ").append(uname).append("SONG_PK PRIMARY KEY(SONGID)ENABLE)");
String Query31=sb31.toString();
st31.executeUpdate(Query31);
Statement st33=con.createStatement();
StringBuilder sb33=new StringBuilder(1024);
sb33.append("ALTER TABLE ").append(uname).append("SONG ADD CONSTRAINT ").append(uname).append("SONG_").append(uname).append("ALBUM_FK1 FOREIGN KEY(ALBUMID)REFERENCES ").append(uname).append("ALBUM(ALBUMID)ENABLE");
String Query33=sb33.toString();
st33.executeUpdate(Query33);
Statement st34=con.createStatement();
StringBuilder sb34=new StringBuilder(1024);
sb34.append("CREATE INDEX ").append(uname).append("SONG_INDEX ON ").append(uname).append("SONG (SONGNAME)");
String Query34=sb34.toString();
st34.executeUpdate(Query34);
请任何人告诉我这个错误告诉我什么。
答案 0 :(得分:2)
当您执行此代码String Query21=sb11.toString();
时,您尝试创建一个已在上面创建的表。
也许这些String Query21=sb21.toString();
可以为您省去一些麻烦
答案 1 :(得分:1)
听起来你正试图创建一个与另一个同名的对象 - 例如表格或约束,字段等。
看起来你曾试图在这里创建两次相同的表:
String Query21=sb11.toString();