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MDEV-10426 ANY_VALUE function #5151

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MDEV-10426 ANY_VALUE function #5151

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1 change: 1 addition & 0 deletions client/mysql.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -914,6 +914,7 @@ static COMMANDS commands[] = {
{ "ADDTIME", 0, 0, 0, ""},
{ "AES_ENCRYPT", 0, 0, 0, ""},
{ "AES_DECRYPT", 0, 0, 0, ""},
{ "ANY_VALUE", 0, 0, 0, ""},
{ "AREA", 0, 0, 0, ""},
{ "ASIN", 0, 0, 0, ""},
{ "ASBINARY", 0, 0, 0, ""},
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19 changes: 19 additions & 0 deletions sql/item_cmpfunc.h
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Expand Up @@ -1250,6 +1250,8 @@ class Item_func_interval :public Item_long_func
class Item_func_coalesce :public Item_func_case_expression
{
public:
Item_func_coalesce(THD *thd, Item *a):
Item_func_case_expression(thd, a) {}
Item_func_coalesce(THD *thd, Item *a, Item *b):
Item_func_case_expression(thd, a, b) {}
Item_func_coalesce(THD *thd, List<Item> &list):
Expand Down Expand Up @@ -1289,6 +1291,23 @@ class Item_func_coalesce :public Item_func_case_expression
};


class Item_func_any_value final :public Item_func_coalesce
{
public:
Item_func_any_value(THD *thd, Item *a):
Item_func_coalesce(thd, a) {}
LEX_CSTRING func_name_cstring() const override
{
static LEX_CSTRING name= {STRING_WITH_LEN("any_value") };
return name;
}
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protected:
Item *shallow_copy(THD *thd) const override
{ return get_item_copy<Item_func_any_value>(thd, this); }
};


/*
Case abbreviations that aggregate its result field type by two arguments:
IFNULL(arg1, arg2)
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23 changes: 23 additions & 0 deletions sql/item_create.cc
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Expand Up @@ -168,6 +168,19 @@ class Create_func_aes_decrypt : public Create_native_func
};


class Create_func_any_value : public Create_func_arg1
{
public:
Item *create_1_arg(THD *thd, Item *arg1) override;

static Create_func_any_value s_singleton;

protected:
Create_func_any_value() = default;
~Create_func_any_value() override = default;
};


class Create_func_kdf : public Create_native_func
{
public:
Expand Down Expand Up @@ -3252,6 +3265,15 @@ Create_func_aes_decrypt::create_native(THD *thd, const LEX_CSTRING *name,
}


Create_func_any_value Create_func_any_value::s_singleton;

Item*
Create_func_any_value::create_1_arg(THD *thd, Item *arg1)
{
return new (thd->mem_root) Item_func_any_value(thd, arg1);
}


Create_func_kdf Create_func_kdf::s_singleton;

Item*
Expand Down Expand Up @@ -6330,6 +6352,7 @@ const Native_func_registry func_array[] =
{ { STRING_WITH_LEN("ADD_MONTHS") }, BUILDER(Create_func_addmonths)},
{ { STRING_WITH_LEN("AES_DECRYPT") }, BUILDER(Create_func_aes_decrypt)},
{ { STRING_WITH_LEN("AES_ENCRYPT") }, BUILDER(Create_func_aes_encrypt)},
{ { STRING_WITH_LEN("ANY_VALUE") }, BUILDER(Create_func_any_value)},
{ { STRING_WITH_LEN("ASIN") }, BUILDER(Create_func_asin)},
{ { STRING_WITH_LEN("ATAN") }, BUILDER(Create_func_atan)},
{ { STRING_WITH_LEN("ATAN2") }, BUILDER(Create_func_atan)},
Expand Down