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MDEV-10141: Add support for INTERSECT (and common parts for EXCEPT)

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MDEV-10140: Add support for EXCEPT
This commit is contained in:
Oleksandr Byelkin
2017-03-14 11:52:00 +01:00
parent e43156e1a6
commit 05d3c3d3f7
93 changed files with 3155 additions and 900 deletions
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9
sql/sql_explain.h
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@@ -207,6 +207,7 @@ public:
Explain_select(MEM_ROOT *root, bool is_analyze) :
Explain_basic_join(root),
linkage(UNSPECIFIED_TYPE),
message(NULL),
having(NULL), having_value(Item::COND_UNDEF),
using_temporary(false), using_filesort(false),
@@ -214,8 +215,11 @@ public:
aggr_tree(NULL)
{}
void add_linkage(Json_writer *writer);
public:
const char *select_type;
enum sub_select_type linkage;
/*
If message != NULL, this is a degenerate join plan, and all subsequent
@@ -316,7 +320,9 @@ public:
/////////////////////////////////////////////////////////////////////////////
/*
extern const char *unit_operation_text[4];
/*
Explain structure for a UNION.
A UNION may or may not have "Using filesort".
@@ -332,6 +338,7 @@ public:
{}
enum explain_node_type get_type() { return EXPLAIN_UNION; }
unit_common_op operation;
int get_select_id()
{