Mmmm ... In the previous solution above I changed your left recursive rule for table_ident by a right recursive rule. If you don't like this, you can use this alternative solution: 
pl@nereida:~/LEyapp/examples$ cat -n dc3.eyp
     1  %start column_ident
     2
     3  %left DUMMY
     4  %right '.'
     5
     6  %%
     7  column_ident:
     8      table_ident '.' ident
     9    | table_ident
    10  ;
    11
    12  table_ident:
    13      database_ident '.' ident
    14    | database_ident %prec DUMMY
    15  ;
    16
    17  database_ident:
    18      ident
    19  ;
    20
    21  ident:
    22      IDENT
    23    | IDENT_QUOTED
    24  ;
    25  %%

[download]
This solution also avoided conflicts: The only shift-reduce conflict is solved in favor of "shift" (that I supppose is what you need here): 
pl@nereida:~/LEyapp/examples$ eyapp -v dc3.eyp
pl@nereida:~/LEyapp/examples$ head -15 dc3.output
Conflicts:
----------
Conflict in state 1 between rule 4 and token '.' resolved as shift.

Rules:
------
0:      $start -> column_ident $end
1:      column_ident -> table_ident '.' ident
2:      column_ident -> table_ident
3:      table_ident -> database_ident '.' ident
4:      table_ident -> database_ident
5:      database_ident -> ident
6:      ident -> IDENT
7:      ident -> IDENT_QUOTED

[download]
Best

Casiano

In reply to Re: (OT) Yapp rules and resolving reduce/reduce errors by casiano
in thread (OT) Yapp rules and resolving reduce/reduce errors by dragonchild

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