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MDEV-16351 JSON_OBJECT() treats hybrid functions with boolean arguments as numbers

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Now the boolean data type is preserved in hybrid functions and MIN/MAX,
so COALESCE(bool_expr,bool_expr) and MAX(bool_expr) are correctly
detected by JSON_OBJECT() as being boolean rather than numeric expressions.
This commit is contained in:
Alexander Barkov
2018-05-31 18:52:32 +04:00
parent 3ceb4a54a1
commit ffe83e8e7b
15 changed files with 277 additions and 14 deletions
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3
sql/opt_range.cc
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@ -13031,7 +13031,8 @@ check_group_min_max_predicates(Item *cond, Item_field *min_max_arg_item,
if (args[0] && args[1]) // this is a binary function or BETWEEN
{
DBUG_ASSERT(pred->is_bool_type());
DBUG_ASSERT(pred->fixed_type_handler());
DBUG_ASSERT(pred->fixed_type_handler()->is_bool_type());
Item_bool_func *bool_func= (Item_bool_func*) pred;
Field *field= min_max_arg_item->field;
if (!args[2]) // this is a binary function