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MDEV-17082 Application-time periods: CREATE

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* add syntax `CREATE TABLE ... PERIOD FOR <apptime>`
* add table period entity
This commit is contained in:
Nikita Malyavin
2019-02-07 23:16:30 +10:00
committed by Sergei Golubchik
parent b63604612e
commit 073c93b194
18 changed files with 618 additions and 190 deletions
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21
sql/sql_lex.h
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@ -4189,7 +4189,7 @@ public:
void add_key_to_list(LEX_CSTRING *field_name,
enum Key::Keytype type, bool check_exists);
// Add a constraint as a part of CREATE TABLE or ALTER TABLE
bool add_constraint(LEX_CSTRING *name, Virtual_column_info *constr,
bool add_constraint(const LEX_CSTRING *name, Virtual_column_info *constr,
bool if_not_exists)
{
constr->name= *name;
@ -4271,6 +4271,25 @@ public:
{
return create_info.vers_info;
}
int add_period(Lex_ident name, Lex_ident_sys_st start, Lex_ident_sys_st end)
{
Table_period_info &info= create_info.period_info;
if (info.is_set())
{
my_error(ER_MORE_THAN_ONE_PERIOD, MYF(0));
return 1;
}
info.set_period(start, end);
info.name= name;
Virtual_column_info *constr= new Virtual_column_info();
constr->expr= lt_creator.create(thd, create_item_ident_nosp(thd, &start),
create_item_ident_nosp(thd, &end));
add_constraint(&null_clex_str, constr, false);
return 0;
}
sp_package *get_sp_package() const;
/**