MDEV-16937 Strict SQL with system versioned tables causes issues

Respect system fields in NO_ZERO_DATE mode.

This is the subject for refactoring in MDEV-19597

mysql-test/suite/federated/federatedx_versioning.result

@@ -9,8 +9,8 @@ show create table tf;
 Table	Create Table
 tf	CREATE TABLE `tf` (
   `x` int(11) DEFAULT NULL,
-  `row_start` SYS_TYPE NOT NULL INVISIBLE DEFAULT 0,
-  `row_end` SYS_TYPE NOT NULL INVISIBLE DEFAULT 0
+  `row_start` SYS_TYPE INVISIBLE DEFAULT '1971-01-01 00:00:00.000000',
+  `row_end` SYS_TYPE INVISIBLE DEFAULT '1971-01-01 00:00:00.000000'
 ) ENGINE=FEDERATED DEFAULT CHARSET=latin1 CONNECTION='mysql://root@127.0.0.1:MASTER_MYPORT/test/t1'
 # INSERT
 insert into t1 values (1);

mysql-test/suite/federated/federatedx_versioning.test

@@ -12,7 +12,7 @@ eval create or replace table t1 (
 with system versioning;
 --replace_result $MASTER_MYPORT MASTER_MYPORT
 eval create or replace table tf engine=FEDERATED connection='mysql://root@127.0.0.1:$MASTER_MYPORT/test/t1';
---replace_result $MASTER_MYPORT MASTER_MYPORT $sys_datatype_expl SYS_TYPE "'0000-00-00 00:00:00.000000'" 0
+--replace_result $MASTER_MYPORT MASTER_MYPORT $sys_datatype_expl SYS_TYPE 19710101000000 "'1971-01-01 00:00:00.000000'" " NOT NULL" ""
 show create table tf;
 --echo # INSERT
 insert into t1 values (1);

mysql-test/suite/versioning/common.inc

@@ -50,6 +50,10 @@ if ($MTR_COMBINATION_MYISAM)
 {
   --let $MTR_COMBINATION_TIMESTAMP= 1
 }
+if ($MTR_COMBINATION_TRADITIONAL)
+{
+  --let $MTR_COMBINATION_TIMESTAMP= 1
+}
 if ($MTR_COMBINATION_HEAP)
 {
   --let $MTR_COMBINATION_TIMESTAMP= 1

mysql-test/suite/versioning/engines.combinations

@@ -7,5 +7,10 @@ default-storage-engine=innodb
 [myisam]
 default-storage-engine=myisam
 
+[traditional]
+default-storage-engine=myisam
+sql-mode=traditional
+
 [heap]
 default-storage-engine=memory
+

mysql-test/suite/versioning/r/select.result

@@ -43,7 +43,7 @@ ASOF_x	y
 7	107
 8	108
 9	109
-select x as FROMTO_x, y from t1 for system_time from timestamp '0-0-0 0:0:0' to timestamp @t1;
+select x as FROMTO_x, y from t1 for system_time from timestamp '1970-01-01 00:00:00' to timestamp @t1;
 FROMTO_x	y
 0	100
 1	101
@@ -55,7 +55,7 @@ FROMTO_x	y
 7	107
 8	108
 9	109
-select x as BETWAND_x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp @t1;
+select x as BETWAND_x, y from t1 for system_time between timestamp '1970-01-01 00:00:00' and timestamp @t1;
 BETWAND_x	y
 0	100
 1	101
@@ -247,7 +247,7 @@ a	b
 select * from (select * from (select * from t1 cross join t2) as tmp1) as tmp2;
 a	b
 1	2
-select * from (select * from t1 cross join t2 for system_time as of timestamp ('0-0-0')) as tmp;
+select * from (select * from t1 cross join t2 for system_time as of timestamp ('1970-01-01 00:00:00')) as tmp;
 a	b
 create or replace table t1(a1 int) with system versioning;
 create or replace table t2(a2 int) with system versioning;

mysql-test/suite/versioning/r/select2,trx_id.rdiff

@@ -22,7 +22,7 @@
  7	107
  8	108
  9	109
--select x as FROMTO2_x, y from t1 for system_time from '0-0-0 0:0:0' to @t1;
+-select x as FROMTO2_x, y from t1 for system_time from '1970-01-01 00:00' to @t1;
 +select x as FROMTO2_x, y from t1 for system_time from @x0 to @x1;
  FROMTO2_x	y
  0	100
@@ -31,7 +31,7 @@
  7	107
  8	108
  9	109
--select x as BETWAND2_x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp @t1;
+-select x as BETWAND2_x, y from t1 for system_time between timestamp '1970-01-01 00:00' and timestamp @t1;
 +select x as BETWAND2_x, y from t1 for system_time between transaction @x0 and transaction @x1;
  BETWAND2_x	y
  0	100

mysql-test/suite/versioning/r/select2.result

@@ -44,7 +44,7 @@ ASOF_x	y
 7	107
 8	108
 9	109
-select x as FROMTO_x, y from t1 for system_time from '0-0-0 0:0:0' to timestamp @t1;
+select x as FROMTO_x, y from t1 for system_time from '1970-01-01 00:00' to timestamp @t1;
 FROMTO_x	y
 0	100
 1	101
@@ -56,7 +56,7 @@ FROMTO_x	y
 7	107
 8	108
 9	109
-select x as BETWAND_x, y from t1 for system_time between '0-0-0 0:0:0' and timestamp @t1;
+select x as BETWAND_x, y from t1 for system_time between '1970-01-01 00:00' and timestamp @t1;
 BETWAND_x	y
 0	100
 1	101
@@ -94,7 +94,7 @@ ASOF2_x	y
 7	107
 8	108
 9	109
-select x as FROMTO2_x, y from t1 for system_time from '0-0-0 0:0:0' to @t1;
+select x as FROMTO2_x, y from t1 for system_time from '1970-01-01 00:00' to @t1;
 FROMTO2_x	y
 0	100
 1	101
@@ -106,7 +106,7 @@ FROMTO2_x	y
 7	107
 8	108
 9	109
-select x as BETWAND2_x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp @t1;
+select x as BETWAND2_x, y from t1 for system_time between timestamp '1970-01-01 00:00' and timestamp @t1;
 BETWAND2_x	y
 0	100
 1	101
@@ -270,7 +270,7 @@ a	b
 select * from (select * from (select * from t1 cross join t2) as tmp1) as tmp2;
 a	b
 1	2
-select * from (select * from t1 cross join t2 for system_time as of timestamp ('0-0-0')) as tmp;
+select * from (select * from t1 cross join t2 for system_time as of timestamp ('1970-01-01 00:00')) as tmp;
 a	b
 create or replace table t1(a1 int) with system versioning;
 create or replace table t2(a2 int) with system versioning;

mysql-test/suite/versioning/r/sysvars.result

@@ -134,11 +134,11 @@ select * from t for system_time all;
 a
 2
 1
-select * from t for system_time from '0-0-0' to current_timestamp(6);
+select * from t for system_time from '1970-01-01 00:00' to current_timestamp(6);
 a
 2
 1
-select * from t for system_time between '0-0-0' and current_timestamp(6);
+select * from t for system_time between '1970-01-01 00:00' and current_timestamp(6);
 a
 2
 1

mysql-test/suite/versioning/r/view.result

@@ -79,7 +79,7 @@ create or replace view vt12 as select * from t1 cross join t2;
 select * from vt12;
 a	b
 1	2
-create or replace view vt12 as select * from t1 for system_time as of timestamp ('0-0-0') cross join t2;
+create or replace view vt12 as select * from t1 for system_time as of timestamp ('1970-01-01 00:00') cross join t2;
 select * from vt12;
 a	b
 # VIEW improvements [tempesta-tech/mariadb#183]

mysql-test/suite/versioning/t/select.test

@@ -48,8 +48,8 @@ if ($MTR_COMBINATION_TRX_ID)
 
 select x, y from t1;
 select x as ASOF_x, y from t1 for system_time as of timestamp @t0;
-select x as FROMTO_x, y from t1 for system_time from timestamp '0-0-0 0:0:0' to timestamp @t1;
-select x as BETWAND_x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp @t1;
+select x as FROMTO_x, y from t1 for system_time from timestamp '1970-01-01 00:00:00' to timestamp @t1;
+select x as BETWAND_x, y from t1 for system_time between timestamp '1970-01-01 00:00:00' and timestamp @t1;
 select x as ALL_x, y from t1 for system_time all;
 
 --disable_query_log
@@ -62,8 +62,8 @@ if ($MTR_COMBINATION_TRX_ID)
 if ($MTR_COMBINATION_TIMESTAMP)
 {
   select x as ASOF2_x, y from t1 for system_time as of @t0;
-  select x as FROMTO2_x, y from t1 for system_time from timestamp '0-0-0 0:0:0' to timestamp @t1;
-  select x as BETWAND2_x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp @t1;
+  select x as FROMTO2_x, y from t1 for system_time from timestamp '1970-01-01 00:00:00' to timestamp @t1;
+  select x as BETWAND2_x, y from t1 for system_time between timestamp '1970-01-01 00:00:00' and timestamp @t1;
 }
 --enable_query_log
 
@@ -161,7 +161,7 @@ insert into t1 values (1);
 insert into t2 values (2);
 select * from (select * from t1 cross join t2) as tmp;
 select * from (select * from (select * from t1 cross join t2) as tmp1) as tmp2;
-select * from (select * from t1 cross join t2 for system_time as of timestamp ('0-0-0')) as tmp;
+select * from (select * from t1 cross join t2 for system_time as of timestamp ('1970-01-01 00:00:00')) as tmp;
 
 create or replace table t1(a1 int) with system versioning;
 create or replace table t2(a2 int) with system versioning;

mysql-test/suite/versioning/t/select2.test

@@ -36,8 +36,8 @@ if($MTR_COMBINATION_TRX_ID) {
 
 select x, y from t1;
 select x as ASOF_x, y from t1 for system_time as of timestamp @t0;
-select x as FROMTO_x, y from t1 for system_time from '0-0-0 0:0:0' to timestamp @t1;
-select x as BETWAND_x, y from t1 for system_time between '0-0-0 0:0:0' and timestamp @t1;
+select x as FROMTO_x, y from t1 for system_time from '1970-01-01 00:00' to timestamp @t1;
+select x as BETWAND_x, y from t1 for system_time between '1970-01-01 00:00' and timestamp @t1;
 select x as ALL_x, y from t1 for system_time all;
 
 if($MTR_COMBINATION_TRX_ID) {
@@ -47,8 +47,8 @@ if($MTR_COMBINATION_TRX_ID) {
 }
 if(!$MTR_COMBINATION_TRX_ID) {
   select x as ASOF2_x, y from t1 for system_time as of @t0;
-  select x as FROMTO2_x, y from t1 for system_time from '0-0-0 0:0:0' to @t1;
-  select x as BETWAND2_x, y from t1 for system_time between timestamp '0-0-0 0:0:0' and timestamp @t1;
+  select x as FROMTO2_x, y from t1 for system_time from '1970-01-01 00:00' to @t1;
+  select x as BETWAND2_x, y from t1 for system_time between timestamp '1970-01-01 00:00' and timestamp @t1;
 }
 
 drop table t1;
@@ -166,7 +166,7 @@ insert into t1 values (1);
 insert into t2 values (2);
 select * from (select * from t1 cross join t2) as tmp;
 select * from (select * from (select * from t1 cross join t2) as tmp1) as tmp2;
-select * from (select * from t1 cross join t2 for system_time as of timestamp ('0-0-0')) as tmp;
+select * from (select * from t1 cross join t2 for system_time as of timestamp ('1970-01-01 00:00')) as tmp;
 
 create or replace table t1(a1 int) with system versioning;
 create or replace table t2(a2 int) with system versioning;

mysql-test/suite/versioning/t/sysvars.test

@@ -97,8 +97,8 @@ select * from t for system_time all;
 select * from t;
 select * from t for system_time as of timestamp current_timestamp(6);
 select * from t for system_time all;
-select * from t for system_time from '0-0-0' to current_timestamp(6);
-select * from t for system_time between '0-0-0' and current_timestamp(6);
+select * from t for system_time from '1970-01-01 00:00' to current_timestamp(6);
+select * from t for system_time between '1970-01-01 00:00' and current_timestamp(6);
 
 show status like "Feature_system_versioning";
 

mysql-test/suite/versioning/t/view.test

@@ -65,7 +65,7 @@ insert into t1 values (1);
 insert into t2 values (2);
 create or replace view vt12 as select * from t1 cross join t2;
 select * from vt12;
-create or replace view vt12 as select * from t1 for system_time as of timestamp ('0-0-0') cross join t2;
+create or replace view vt12 as select * from t1 for system_time as of timestamp ('1970-01-01 00:00') cross join t2;
 select * from vt12;
 
 --echo # VIEW improvements [tempesta-tech/mariadb#183]

sql/field.cc

@@ -11456,6 +11456,13 @@ bool Field::save_in_field_default_value(bool view_error_processing)
 {
   THD *thd= table->in_use;
 
+  /*
+     TODO: MDEV-19597 Refactor TABLE::vers_update_fields() via stored virtual columns
+     This condition will go away as well as other conditions with vers_sys_field().
+  */
+  if (vers_sys_field())
+    return false;
+
   if (unlikely(flags & NO_DEFAULT_VALUE_FLAG &&
                real_type() != MYSQL_TYPE_ENUM))
   {

sql/sql_table.cc

@@ -4195,6 +4195,7 @@ mysql_prepare_create_table(THD *thd, HA_CREATE_INFO *create_info,
 
     if (thd->variables.sql_mode & MODE_NO_ZERO_DATE &&
         !sql_field->default_value && !sql_field->vcol_info &&
+        !sql_field->vers_sys_field() &&
         sql_field->is_timestamp_type() &&
         !opt_explicit_defaults_for_timestamp &&
         (sql_field->flags & NOT_NULL_FLAG) &&

sql/table.cc

@@ -8222,7 +8222,7 @@ bool TABLE::validate_default_values_of_unset_fields(THD *thd) const
   for (Field **fld= field; *fld; fld++)
   {
     if (!bitmap_is_set(write_set, (*fld)->field_index) &&
-        !((*fld)->flags & NO_DEFAULT_VALUE_FLAG))
+        !((*fld)->flags & (NO_DEFAULT_VALUE_FLAG | VERS_SYSTEM_FIELD)))
     {
       if (!(*fld)->is_null_in_record(s->default_values) &&
           (*fld)->validate_value_in_record_with_warn(thd, s->default_values) &&

sql/unireg.cc

@@ -1086,6 +1086,7 @@ static bool make_empty_rec(THD *thd, uchar *buff, uint table_options,
       null_count+= field->length & 7;
 
     if (field->default_value && !field->default_value->flags &&
+        !field->vers_sys_field() &&
         (!(field->flags & BLOB_FLAG) ||
          field->real_field_type() == MYSQL_TYPE_GEOMETRY))
     {
@@ -1108,6 +1109,7 @@ static bool make_empty_rec(THD *thd, uchar *buff, uint table_options,
       delete regfield; //To avoid memory leak
     }
     else if (regfield->real_type() == MYSQL_TYPE_ENUM &&
+             !field->vers_sys_field() &&
 	     (field->flags & NOT_NULL_FLAG))
     {
       regfield->set_notnull();

storage/federatedx/ha_federatedx.cc

@@ -3611,6 +3611,9 @@ int ha_federatedx::discover_assisted(handlerton *hton, THD* thd,
   char buf[1024];
   String query(buf, sizeof(buf), cs);
   static LEX_CSTRING cut_clause={STRING_WITH_LEN(" WITH SYSTEM VERSIONING")};
+  static LEX_CSTRING cut_start={STRING_WITH_LEN("GENERATED ALWAYS AS ROW START")};
+  static LEX_CSTRING cut_end={STRING_WITH_LEN("GENERATED ALWAYS AS ROW END")};
+  static LEX_CSTRING set_ts={STRING_WITH_LEN("DEFAULT TIMESTAMP'1971-01-01 00:00:00'")};
   int cut_offset;
   MYSQL_RES *res;
   MYSQL_ROW rdata;
@@ -3649,7 +3652,21 @@ int ha_federatedx::discover_assisted(handlerton *hton, THD* thd,
   cut_offset= (int)query.length() - (int)cut_clause.length;
   if (cut_offset > 0 && !memcmp(query.ptr() + cut_offset,
                                 cut_clause.str, cut_clause.length))
+  {
     query.length(cut_offset);
+    const char *ptr= strstr(query.ptr(), cut_start.str);
+    if (ptr)
+    {
+      query.replace((uint32) (ptr - query.ptr()), (uint32) cut_start.length,
+                    set_ts.str, (uint32) set_ts.length);
+    }
+    ptr= strstr(query.ptr(), cut_end.str);
+    if (ptr)
+    {
+      query.replace((uint32) (ptr - query.ptr()), (uint32) cut_end.length,
+                    set_ts.str, (uint32) set_ts.length);
+    }
+  }
   query.append(STRING_WITH_LEN(" CONNECTION='"), cs);
   query.append_for_single_quote(table_s->connect_string.str,
                                 table_s->connect_string.length);