database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-10-12 12:25:37 +03:00
Code Activity

MDEV-17082 Application-time periods: CREATE

Browse Source 
* 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
Download Patch File Download Diff File Expand all files Collapse all files

109
sql/handler.cc
View File

@@ -7183,8 +7183,8 @@ bool Vers_parse_info::fix_implicit(THD *thd, Alter_info *alter_info)
alter_info->flags|= ALTER_PARSER_ADD_COLUMN;
system_time= start_end_t(default_start, default_end);
as_row= system_time;
period= start_end_t(default_start, default_end);
as_row= period;
if (vers_create_sys_field(thd, default_start, alter_info, VERS_SYS_START_FLAG) ||
vers_create_sys_field(thd, default_end, alter_info, VERS_SYS_END_FLAG))
@@ -7375,7 +7375,7 @@ bool Vers_parse_info::fix_alter_info(THD *thd, Alter_info *alter_info,
DBUG_ASSERT(end.str);
as_row= start_end_t(start, end);
system_time= as_row;
period= as_row;
if (alter_info->create_list.elements)
{
@@ -7461,7 +7461,7 @@ Vers_parse_info::fix_create_like(Alter_info &alter_info, HA_CREATE_INFO &create_
}
as_row= start_end_t(f_start->field_name, f_end->field_name);
system_time= as_row;
period= as_row;
create_info.options|= HA_VERSIONED_TABLE;
return false;
@@ -7486,14 +7486,14 @@ bool Vers_parse_info::check_conditions(const Lex_table_name &table_name,
return true;
}
if (!system_time.start || !system_time.end)
if (!period.start || !period.end)
{
my_error(ER_MISSING, MYF(0), table_name.str, "PERIOD FOR SYSTEM_TIME");
return true;
}
if (!as_row.start.streq(system_time.start) ||
!as_row.end.streq(system_time.end))
if (!as_row.start.streq(period.start) ||
!as_row.end.streq(period.end))
{
my_error(ER_VERS_PERIOD_COLUMNS, MYF(0), as_row.start.str, as_row.end.str);
return true;
@@ -7583,3 +7583,98 @@ bool Vers_parse_info::check_sys_fields(const Lex_table_name &table_name,
"ROW END" : found_flag ? "ROW START" : "ROW START/END");
return true;
}
static bool check_period_field(const Create_field* f, const char* name,
const char* period_name)
{
bool res= false;
if (!f)
{
my_error(ER_BAD_FIELD_ERROR, MYF(0), name, period_name);
res= true;
}
else if (f->type_handler()->mysql_timestamp_type() == MYSQL_TIMESTAMP_ERROR)
{
my_error(ER_WRONG_FIELD_SPEC, MYF(0), name);
res= true;
}
else if (f->vcol_info || f->flags & VERS_SYSTEM_FIELD)
{
my_error(ER_PERIOD_FIELD_WRONG_ATTRIBUTES, MYF(0),
f->field_name.str, "GENERATED ALWAYS AS");
}
return res;
}
bool Table_scope_and_contents_source_st::check_fields(
THD *thd, Alter_info *alter_info, TABLE_LIST &create_table)
{
bool res= vers_check_system_fields(thd, alter_info, create_table);
if (res)
return true;
if (!period_info.name)
return false;
if (tmp_table())
{
my_error(ER_PERIOD_TEMPORARY_NOT_ALLOWED, MYF(0));
return true;
}
Table_period_info::start_end_t &period= period_info.period;
const Create_field *row_start= NULL;
const Create_field *row_end= NULL;
List_iterator<Create_field> it(alter_info->create_list);
while (const Create_field *f= it++)
{
if (period.start.streq(f->field_name)) row_start= f;
else if (period.end.streq(f->field_name)) row_end= f;
if (period_info.name.streq(f->field_name))
{
my_error(ER_DUP_FIELDNAME, MYF(0), f->field_name.str);
return true;
}
}
res= check_period_field(row_start, period.start.str, period_info.name.str);
res= res || check_period_field(row_end, period.end.str, period_info.name.str);
if (res)
return true;
if (row_start->type_handler() != row_end->type_handler()
|| row_start->length != row_end->length)
{
my_error(ER_PERIOD_TYPES_MISMATCH, MYF(0), period_info.name.str);
res= true;
}
return res;
}
bool
Table_scope_and_contents_source_st::fix_create_fields(THD *thd,
Alter_info *alter_info,
const TABLE_LIST &create_table,
bool create_select)
{
if (vers_fix_system_fields(thd, alter_info, create_table, create_select))
return true;
if (!period_info.name)
return false;
Table_period_info::start_end_t &period= period_info.period;
List_iterator<Create_field> it(alter_info->create_list);
while (Create_field *f= it++)
{
if (period.start.streq(f->field_name) || period.end.streq(f->field_name))
{
f->period= &period_info;
f->flags|= NOT_NULL_FLAG;
}
}
return false;
}