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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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sql/sql_parse.cc
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@ -9664,8 +9664,9 @@ Item *negate_expression(THD *thd, Item *expr)
{
/* it is NOT(NOT( ... )) */
Item *arg= ((Item_func *) expr)->arguments()[0];
const Type_handler *fh= arg->fixed_type_handler();
enum_parsing_place place= thd->lex->current_select->parsing_place;
if (arg->is_bool_type() || place == IN_WHERE || place == IN_HAVING)
if ((fh && fh->is_bool_type()) || place == IN_WHERE || place == IN_HAVING)
return arg;
/*
if it is not boolean function then we have to emulate value of