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Fuzz PREWHERE clause

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This commit is contained in:
Alexander Gololobov 2023-01-12 13:14:09 +01:00
parent 6b6f5f9185
commit 2a92ae8d8e
1 changed files with 27 additions and 0 deletions
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27
src/Client/QueryFuzzer.cpp
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@ -905,11 +905,38 @@ void QueryFuzzer::fuzz(ASTPtr & ast)
select->where()->children.clear();
select->setExpression(ASTSelectQuery::Expression::WHERE, {});
}
else if (!select->prewhere().get())
{
if (fuzz_rand() % 50 == 0)
{
select->setExpression(ASTSelectQuery::Expression::PREWHERE, select->where()->clone());
if (fuzz_rand() % 2 == 0)
{
select->where()->children.clear();
select->setExpression(ASTSelectQuery::Expression::WHERE, {});
}
}
}
}
else if (fuzz_rand() % 50 == 0)
{
select->setExpression(ASTSelectQuery::Expression::WHERE, getRandomColumnLike());
}
if (select->prewhere().get())
{
if (fuzz_rand() % 50 == 0)
{
select->prewhere()->children.clear();
select->setExpression(ASTSelectQuery::Expression::PREWHERE, {});
}
}
else if (fuzz_rand() % 50 == 0)
{
select->setExpression(ASTSelectQuery::Expression::PREWHERE, getRandomColumnLike());
}
fuzzOrderByList(select->orderBy().get());
fuzz(select->children);