Join on tables

We have 3 tables
T1 T2 T3
a1 a2 c3
b1 b2 d3
c2
d2
They are joined on conditions:
T1-T2:
a1=a2
and T2-T3:
c2=c3
The requirement is we want to join the tables as:
T1-T2:
a1=a2 or b1=b2
and T2-T3:
c2=d2 or d2=d3
Can this be done?
Then, what will happen to the cases:
1. When a1, d2 is given
2. b1, c2 is given

Hi,
A. Drieux answered your first question, so I'll do the second one.
if b1 and c2 are null (only a1 and d2 given), T1 will be correctly joined to T2 through a1-a2 and T1 will also be correctly joined to T3 through d2-d3.
Same when only b1, c2 are provided ;)
Hope it helps.
Regards,
JeromeFr

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                           ca_key_val  in varchar2,
                           ca_other_col_name in varchar2,
                           ca_tname     in varchar2 )
       return varchar2
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           l_sep    varchar2(1);
           l_val    varchar2(32000);
           l_count   number(6);
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                            where ' || ca_key_name || ' = '
                       using ca_key_val;
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               l_val := SUBSTR(l_val,0,102);
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               l_str := l_str || l_sep || l_count || '.' || l_val;
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                           ca_other_col_name in varchar2,
                           ca_tname     in varchar2 )
       return varchar2
          as
           type rc is ref cursor;
           l_str    nvarchar2(32000);
           l_sep    varchar2(1);
           l_val    varchar2(32000);
           l_count   number(6);
           l_cur    rc;
       begin
       l_count :=1;
           open l_cur for 'select '||ca_other_col_name||'
                             from '|| ca_tname || '
                            where ' || ca_key_name || ' = '
                       using ca_key_val;
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               l_str := l_str || l_sep || l_val ;
               l_sep := ',';
           l_count := l_count + 1;
           end loop;
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           return l_str;
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    DESC imsauditevent12;
    Name                           Null     Type                                                                                                                                                                                      
    ID                             NOT NULL NUMBER                                                                                                                                                                                       
    TASKSESSION_ID                 NOT NULL NUMBER                                                                                                                                                                                       
    TASKSESSION_OID                         VARCHAR2(100)                                                                                                                                                                                
    PARENT_EVENT_OID                        VARCHAR2(100)                                                                                                                                                                                
    AUDIT_TIME                     NOT NULL TIMESTAMP(6)                                                                                                                                                                                 
    EVENT_OID                      NOT NULL VARCHAR2(100)                                                                                                                                                                                
    ADMIN_DN                       NOT NULL VARCHAR2(512)                                                                                                                                                                                
    ADMIN_NAME                              VARCHAR2(255)                                                                                                                                                                                
    EVENT_NAME                     NOT NULL VARCHAR2(255)                                                                                                                                                                                
    EVENT_DESCRIPTION                       VARCHAR2(4000)                                                                                                                                                                               
    EVENT_STATE                             VARCHAR2(100)                                                                                                                                                                                
    ENVNAME                        NOT NULL VARCHAR2(100)                                                                                                                                                                                
    ENV_OID                        NOT NULL VARCHAR2(100)                                                                                                                                                                                
    DESC imsauditeventobject12;
    Name                           Null     Type                                                                                                                                                                                         
    ID                             NOT NULL NUMBER                                                                                                                                                                                       
    PARENT_EVENT_ID                NOT NULL NUMBER                                                                                                                                                                                       
    AUDIT_TIME                     NOT NULL TIMESTAMP(6)                                                                                                                                                                                 
    OBJECT_TYPE                    NOT NULL VARCHAR2(100)                                                                                                                                                                                
    OBJECT_NAME                             VARCHAR2(255)                                                                                                                                                                                
    DESC imsauditobjectattributes12;
    Name                           Null     Type                                                                                                                                                                                         
    ID                             NOT NULL NUMBER                                                                                                                                                                                       
    PARENT_OBJECT_ID               NOT NULL NUMBER                                                                                                                                                                                       
    AUDIT_TIME                     NOT NULL TIMESTAMP(6)                                                                                                                                                                                 
    DISPLAY_NAME                            VARCHAR2(255)                                                                                                                                                                                
    ATTRIBUTE_NAME                 NOT NULL VARCHAR2(255)                                                                                                                                                                                
    ATTRIBUTE_OLDVALUE                      VARCHAR2(4000)                                                                                                                                                                               
    ATTRIBUTE_NEWVALUE                      VARCHAR2(4000)                                                                                                                                                                               
    DESC imsaudittasksession12;
    Name                           Null     Type                                                                                                                                                                                         
    ID                             NOT NULL NUMBER                                                                                                                                                                                       
    PARENT_TS_OID                           VARCHAR2(100)                                                                                                                                                                                
    PARENT_EVENT_OID                        VARCHAR2(100)                                                                                                                                                                                
    AUDIT_TIME                     NOT NULL TIMESTAMP(6)                                                                                                                                                                                 
    TASKSESSION_OID                NOT NULL VARCHAR2(100)                                                                                                                                                                                
    ADMIN_DN                       NOT NULL VARCHAR2(512)                                                                                                                                                                                
    ADMIN_NAME                              VARCHAR2(255)                                                                                                                                                                                
    TASK_NAME                               VARCHAR2(255)                                                                                                                                                                                
    TASK_TAG                       NOT NULL VARCHAR2(255)                                                                                                                                                                                
    TASK_DESCRIPTION                        VARCHAR2(4000)                                                                                                                                                                               
    TASK_PRIORITY                           NUMBER                                                                                                                                                                                       
    STATE                          NOT NULL VARCHAR2(100)                                                                                                                                                                                
    ENVNAME                        NOT NULL VARCHAR2(100)                                                                                                                                                                                
    ENV_OID                        NOT NULL VARCHAR2(100)                                                                                                                                                                
    DESC imsAuditObjectRelationship12;
    Name                           Null     Type                                                                                                                                                                                         
    ID                             NOT NULL NUMBER                                                                                                                                                                                       
    PARENT_EVENT_ID                NOT NULL NUMBER                                                                                                                                                                                       
    AUDIT_TIME                     NOT NULL TIMESTAMP(6)                                                                                                                                                                                 
    OBJECT_TYPE                    NOT NULL VARCHAR2(100)                                                                                                                                                                                
    OBJECT_DN                      NOT NULL VARCHAR2(512)                                                                                                                                                                                
    CONTAINER_TYPE                 NOT NULL VARCHAR2(100)                                                                                                                                                                                
    OBJECT_NAME                    NOT NULL VARCHAR2(255)                                                                                                                                                                                
    CONTAINER_NAME                 NOT NULL VARCHAR2(255)                                                                                                                                                                                
    CONTAINER_DN                   NOT NULL VARCHAR2(512)                                                                                                                                                                          
    OPERATION                      NOT NULL VARCHAR2(50)                                                                                                                                                                                 
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    Badri

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    Web: http://tajuddin.whitepagesbd.com
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