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Reset cross-db flag for each statement #3237

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merged 6 commits into from
Dec 19, 2024
Merged

Reset cross-db flag for each statement #3237

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4e00c8c
Reset cross-db flag for each statement
HarshLunagariya Dec 11, 2024
168aeb0
Add tests
HarshLunagariya Dec 12, 2024
b20fa79
more tests
HarshLunagariya Dec 16, 2024
7a6c570
address comments
HarshLunagariya Dec 17, 2024
8ca2971
More changes
HarshLunagariya Dec 18, 2024
c72b9ca
improve tests
HarshLunagariya Dec 19, 2024
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4 changes: 4 additions & 0 deletions contrib/babelfishpg_tsql/src/tsqlIface.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1857,6 +1857,7 @@ class tsqlBuilder : public tsqlCommonMutator
graft(makeSQL(ctx), peekContainer());
}

is_cross_db = false;
// prepare rewriting
clear_rewritten_query_fragment();
PLtsql_stmt_execsql *stmt = (PLtsql_stmt_execsql *) getPLtsql_fragment(ctx);
Expand Down Expand Up @@ -1917,7 +1918,10 @@ class tsqlBuilder : public tsqlCommonMutator

// record whether stmt is cross-db
if (is_cross_db)
{
stmt->is_cross_db = true;
is_cross_db = false;
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We are also setting this flag to true in makeExecuteProcedure but not resetting it back. What would happen if we exec a batch like

EXEC db.dbo.p
SELECT * FROM t

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@tanscorpio7 tanscorpio7 Dec 16, 2024 •
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can we reset is_cross_db in enterDMLStatement ?

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Also seems like we can just remove use of this flag from makeExecuteProcedure

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@HarshLunagariya HarshLunagariya Dec 16, 2024 •
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Also seems like we can just remove use of this flag from makeExecuteProcedure

Yes, I noticed it too. On top of that we can cleanup some logic from pl_exec as well. We should track it separately because I assume there we will need more test coverage, can't just rely on existing tests to conclude that given logic is redundant.

can we reset is_cross_db in enterDMLStatement ?

Done.

}
// record that the stmt is dml
stmt->is_dml = true;
// record if a function call
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