s/TRUNCATE ... TO/DELETE HISTORY FROM ... BEFORE/

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

 create table t (a int);
-truncate t to system_time now();
+delete history from t before system_time now();
 ERROR HY000: System versioning required: t
 create or replace table t (a int) with system versioning;
 insert into t values (1);
@@ -7,7 +7,7 @@ update t set a=2;
 set @test = 'correct';
 create trigger trg_before before delete on t for each row set @test = 'incorrect';
 create trigger trg_after after delete on t for each row set @test = 'incorrect';
-truncate t to system_time now(6);
+delete history from t before system_time now(6);
 select @test from t;
 @test
 correct
@@ -23,17 +23,20 @@ a
 22
 1
 2
-truncate t to system_time timestamp @ts1;
+delete history from t before system_time timestamp @ts1;
 select * from t for system_time all;
 a
 11
 22
+1
 2
-truncate table t to system_time timestamp now(6);
+delete history from t before system_time timestamp now(6);
 select * from t for system_time all;
 a
 11
 22
+1
+2
 ### Issue #399, truncate partitioned table is now unimplemented
 create or replace table t (a int)
 with system versioning
@@ -41,18 +44,18 @@ engine myisam
 partition by system_time (
 partition p0 history,
 partition pn current);
-truncate table t to system_time current_timestamp;
+delete history from t before system_time current_timestamp;
 ERROR 42000: The used command is not allowed with this MariaDB version
 create or replace table t (i int) with system versioning;
-truncate t to system_time now();
+delete history from t before system_time now();
 create or replace view v as select * from t;
-truncate v to system_time now();
+delete history from v before system_time now();
 ERROR HY000: TRUNCATE table_name TO doesn't work with VIEWs
 create or replace table t (i int);
-truncate t to system_time now();
+delete history from t before system_time now();
 ERROR HY000: System versioning required: t
 create or replace view v as select * from t;
-truncate v to system_time now();
+delete history from v before system_time now();
 ERROR HY000: TRUNCATE table_name TO doesn't work with VIEWs
 drop table t;
 drop view v;

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

@@ -10,7 +10,7 @@ connection user1;
 show grants;
 Grants for mysqltest_1@localhost
 GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
-truncate mysqltest.t to system_time now();
+delete history from mysqltest.t before system_time now();
 ERROR 42000: DELETE VERSIONING ROWS command denied to user 'mysqltest_1'@'localhost' for table 't'
 connection root;
 grant delete history on mysqltest.* to mysqltest_1@localhost;
@@ -21,7 +21,7 @@ Grants for mysqltest_1@localhost
 GRANT USAGE ON *.* TO 'mysqltest_1'@'localhost'
 GRANT DELETE VERSIONING ROWS ON `mysqltest`.* TO 'mysqltest_1'@'localhost'
 GRANT DELETE VERSIONING ROWS ON `mysqltest`.`t` TO 'mysqltest_1'@'localhost'
-truncate mysqltest.t to system_time now();
+delete history from mysqltest.t before system_time now();
 connection root;
 grant all on *.* to mysqltest_1@localhost;
 show grants for mysqltest_1@localhost;

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

@@ -2,7 +2,7 @@
 
 create table t (a int);
 --error ER_VERSIONING_REQUIRED
-truncate t to system_time now();
+delete history from t before system_time now();
 
 # TRUNCATE is not DELETE and trigger must not be called.
 create or replace table t (a int) with system versioning;
@@ -11,7 +11,7 @@ update t set a=2;
 set @test = 'correct';
 create trigger trg_before before delete on t for each row set @test = 'incorrect';
 create trigger trg_after after delete on t for each row set @test = 'incorrect';
-truncate t to system_time now(6);
+delete history from t before system_time now(6);
 select @test from t;
 drop table t;
 
@@ -23,9 +23,9 @@ set @ts1=now(6);
 --real_sleep 0.01
 update t set a=22 where a=2;
 select * from t for system_time all;
-truncate t to system_time timestamp @ts1;
+delete history from t before system_time timestamp @ts1;
 select * from t for system_time all;
-truncate table t to system_time timestamp now(6);
+delete history from t before system_time timestamp now(6);
 select * from t for system_time all;
 
 --echo ### Issue #399, truncate partitioned table is now unimplemented
@@ -38,20 +38,20 @@ partition by system_time (
     partition pn current);
 
 --error ER_NOT_ALLOWED_COMMAND
-truncate table t to system_time current_timestamp;
+delete history from t before system_time current_timestamp;
 
 create or replace table t (i int) with system versioning;
-truncate t to system_time now();
+delete history from t before system_time now();
 create or replace view v as select * from t;
 --error ER_VERS_TRUNCATE_TO_VIEW
-truncate v to system_time now();
+delete history from v before system_time now();
 
 create or replace table t (i int);
 --error ER_VERSIONING_REQUIRED
-truncate t to system_time now();
+delete history from t before system_time now();
 create or replace view v as select * from t;
 --error ER_VERS_TRUNCATE_TO_VIEW
-truncate v to system_time now();
+delete history from v before system_time now();
 
 drop table t;
 drop view v;

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

@@ -23,7 +23,7 @@ create table mysqltest.t (a int) with system versioning;
 connection user1;
 show grants;
 --error ER_TABLEACCESS_DENIED_ERROR
-truncate mysqltest.t to system_time now();
+delete history from mysqltest.t before system_time now();
 
 connection root;
 grant delete history on mysqltest.* to mysqltest_1@localhost;
@@ -31,7 +31,7 @@ grant delete history on mysqltest.t to mysqltest_1@localhost;
 
 connection user1;
 show grants;
-truncate mysqltest.t to system_time now();
+delete history from mysqltest.t before system_time now();
 
 connection root;
 grant all on *.* to mysqltest_1@localhost;

sql/sql_parse.cc

@@ -9409,10 +9409,18 @@ bool update_precheck(THD *thd, TABLE_LIST *tables)
 bool delete_precheck(THD *thd, TABLE_LIST *tables)
 {
   DBUG_ENTER("delete_precheck");
-  if (check_one_table_access(thd, DELETE_ACL, tables))
-    DBUG_RETURN(TRUE);
-  /* Set privilege for the WHERE clause */
-  tables->grant.want_privilege=(SELECT_ACL & ~tables->grant.privilege);
+  if (tables->vers_conditions)
+  {
+    if (check_one_table_access(thd, DELETE_HISTORY_ACL, tables))
+      DBUG_RETURN(TRUE);
+  }
+  else
+  {
+    if (check_one_table_access(thd, DELETE_ACL, tables))
+      DBUG_RETURN(TRUE);
+    /* Set privilege for the WHERE clause */
+    tables->grant.want_privilege=(SELECT_ACL & ~tables->grant.privilege);
+  }
   DBUG_RETURN(FALSE);
 }
 

sql/sql_truncate.cc

@@ -496,13 +496,6 @@ bool Sql_cmd_truncate_table::execute(THD *thd)
   TABLE_LIST *table= thd->lex->select_lex.table_list.first;
   DBUG_ENTER("Sql_cmd_truncate_table::execute");
 
-  if (table->vers_conditions)
-  {
-    if (check_one_table_access(thd, DELETE_HISTORY_ACL, table))
-      DBUG_RETURN(res);
-    DBUG_RETURN(mysql_delete(thd, table, NULL, NULL, -1, 0, NULL));
-  }
-
   if (check_one_table_access(thd, DROP_ACL, table))
     DBUG_RETURN(res);
 

sql/sql_yacc.yy

@@ -892,10 +892,10 @@ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
 %parse-param { THD *thd }
 %lex-param { THD *thd }
 /*
-  Currently there are 122 shift/reduce conflicts.
+  Currently there are 123 shift/reduce conflicts.
   We should not introduce new conflicts any more.
 */
-%expect 122
+%expect 123
 
 /*
    Comments for TOKENS.
@@ -13404,10 +13404,20 @@ delete:
             lex->ignore= 0;
             lex->select_lex.init_order();
           }
-          opt_delete_options single_multi
+          delete_part2
+          ;
+
+delete_part2:
+          opt_delete_options single_multi {}
+        | HISTORY_SYM delete_single_table
+          BEFORE_SYM SYSTEM_TIME_SYM opt_trans_or_timestamp simple_expr
+          {
+            Lex->vers_conditions.init(SYSTEM_TIME_BEFORE, $5, $6);
+            Lex->last_table()->vers_conditions= Lex->vers_conditions;
+          }
         ;
 
-single_multi:
+delete_single_table:
           FROM table_ident opt_use_partition
           {
             if (!Select->add_table_to_list(thd, $2, NULL, TL_OPTION_UPDATING,
@@ -13419,8 +13429,13 @@ single_multi:
             YYPS->m_lock_type= TL_READ_DEFAULT;
             YYPS->m_mdl_type= MDL_SHARED_READ;
           }
-          opt_where_clause opt_order_clause
-          delete_limit_clause {}
+        ;
+
+single_multi:
+          delete_single_table
+          opt_where_clause
+          opt_order_clause
+          delete_limit_clause
           opt_select_expressions {}
         | table_wild_list
           {
@@ -13501,15 +13516,6 @@ opt_delete_option:
         | IGNORE_SYM   { Lex->ignore= 1; }
         ;
 
-truncate_end:
-          opt_lock_wait_timeout
-          | TO_SYM SYSTEM_TIME_SYM opt_trans_or_timestamp simple_expr
-          {
-            Lex->vers_conditions.init(SYSTEM_TIME_BEFORE, $3, $4);
-            Lex->last_table()->vers_conditions= Lex->vers_conditions;
-          }
-        ;
-
 truncate:
           TRUNCATE_SYM
           {
@@ -13522,7 +13528,7 @@ truncate:
             YYPS->m_lock_type= TL_WRITE;
             YYPS->m_mdl_type= MDL_EXCLUSIVE;
           }
-          opt_table_sym table_name truncate_end
+          opt_table_sym table_name opt_lock_wait_timeout
           {
             LEX* lex= thd->lex;
             DBUG_ASSERT(!lex->m_sql_cmd);