Github user sandhyasun commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/1216#discussion_r134926173
--- Diff: core/sql/exp/ExpLOBaccess.cpp ---
@@ -1970,7 +1970,14 @@ Ex_Lob_Error ExLob::readCursorData(char *tgt, Int64
tgtSize, cursor_t &cursor, I
continue;
}
}
-
+ if (operLen == tgtSize)
+ {
+ //The cursor still has data available but wait until redrive
since
+ //we have fetched all the data for this extract operation
--- End diff --
The cursor on the full lob data indicates that there is data left. But the
extract operation can retrieve justt a portion of the total. The state is
maintained in the cursor and will get updated with each "execute" of the
extract statement issued by caller of the extract statement. Agree this
comment is confusing. I can just say "return the data to caller".
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