diff options
author | Oleksandr Byelkin <sanja@mariadb.com> | 2020-08-03 14:44:06 +0200 |
---|---|---|
committer | Oleksandr Byelkin <sanja@mariadb.com> | 2020-08-03 14:44:06 +0200 |
commit | 57325e470615e79f674d82b2d5b09f609508fc6a (patch) | |
tree | 7a2e84a6753a5a5592f44f96194ad7a551c4669f /sql/item.h | |
parent | 706a7101bfacd29f4f5728034be92240e82df583 (diff) | |
parent | c32f71af7e4b747de223bf6b44e691941f5997cf (diff) | |
download | mariadb-git-57325e470615e79f674d82b2d5b09f609508fc6a.tar.gz |
Merge branch '10.3' into 10.4
Diffstat (limited to 'sql/item.h')
-rw-r--r-- | sql/item.h | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sql/item.h b/sql/item.h index d779e2d6f16..2d5cedbee76 100644 --- a/sql/item.h +++ b/sql/item.h @@ -164,7 +164,7 @@ void dummy_error_processor(THD *thd, void *data); void view_error_processor(THD *thd, void *data); /* - Instances of Name_resolution_context store the information necesary for + Instances of Name_resolution_context store the information necessary for name resolution of Items and other context analysis of a query made in fix_fields(). @@ -344,7 +344,7 @@ public: Monotonicity is defined only for Item* trees that represent table partitioning expressions (i.e. have no subselects/user vars/PS parameters etc etc). An Item* tree is assumed to have the same monotonicity properties - as its correspoinding function F: + as its corresponding function F: [signed] longlong F(field1, field2, ...) { put values of field_i into table record buffer; @@ -1131,7 +1131,7 @@ public: /* real_type() is the type of base item. This is same as type() for most items, except Item_ref() and Item_cache_wrapper() where it - shows the type for the underlaying item. + shows the type for the underlying item. */ virtual enum Type real_type() const { return type(); } @@ -1277,7 +1277,7 @@ public: The caller can modify the returned String, if it's not marked "const" (with the String::mark_as_const() method). That means that if the item returns its own internal buffer (e.g. tmp_value), it - *must* be marked "const" [1]. So normally it's preferrable to + *must* be marked "const" [1]. So normally it's preferable to return the result value in the String, that was passed as an argument. But, for example, SUBSTR() returns a String that simply points into the buffer of SUBSTR()'s args[0]->val_str(). Such a @@ -1755,7 +1755,7 @@ public: @param cond_ptr[OUT] Store a replacement item here if the condition can be simplified, e.g.: WHERE part1 OR part2 OR part3 - with one of the partN evalutating to SEL_TREE::ALWAYS. + with one of the partN evaluating to SEL_TREE::ALWAYS. */ virtual SEL_TREE *get_mm_tree(RANGE_OPT_PARAM *param, Item **cond_ptr); /* @@ -2292,8 +2292,9 @@ public: virtual bool is_outer_field() const { DBUG_ASSERT(is_fixed()); return FALSE; } /** - Checks if this item or any of its decendents contains a subquery. This is a - replacement of the former Item::has_subquery() and Item::with_subselect. + Checks if this item or any of its descendents contains a subquery. + This is a replacement of the former Item::has_subquery() and + Item::with_subselect. */ virtual bool with_subquery() const { DBUG_ASSERT(is_fixed()); return false; } @@ -6055,7 +6056,7 @@ public: This is the method that updates the cached value. It must be explicitly called by the user of this class to store the value - of the orginal item in the cache. + of the original item in the cache. */ virtual void copy() = 0; |