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BUG#6676: Added comment for the fix
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@ -2528,6 +2528,11 @@ int User_var_log_event::exec_event(struct st_relay_log_info* rli)
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0 can be passed as last argument (reference on item)
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*/
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e.fix_fields(thd, 0, 0);
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/*
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A variable can just be considered as a table with
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a single record and with a single column. Thus, like
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a column value, it could always have IMPLICIT derivation.
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*/
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e.update_hash(val, val_len, type, charset, DERIVATION_IMPLICIT);
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free_root(thd->mem_root,0);
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