select count(*) from information_schema.columns;
count(*)
#
DROP TABLE IF EXISTS t1;
CREATE LOGFILE GROUP lg1
ADD UNDOFILE 'undofile.dat'
INITIAL_SIZE 16M
UNDO_BUFFER_SIZE = 1M
ENGINE=MYISAM;
Warnings:
Error	1478	Table storage engine 'MyISAM' does not support the create option 'TABLESPACE or LOGFILE GROUP'
ALTER LOGFILE GROUP lg1
ADD UNDOFILE 'undofile02.dat'
INITIAL_SIZE = 4M 
ENGINE=XYZ;
Warnings:
Warning	1286	Unknown table engine 'XYZ'
Error	1478	Table storage engine 'MyISAM' does not support the create option 'TABLESPACE or LOGFILE GROUP'
CREATE TABLESPACE ts1
ADD DATAFILE 'datafile.dat'
USE LOGFILE GROUP lg1
INITIAL_SIZE 12M;
Warnings:
Error	1478	Table storage engine 'MyISAM' does not support the create option 'TABLESPACE or LOGFILE GROUP'
set storage_engine=ndb;
CREATE LOGFILE GROUP lg1
ADD UNDOFILE 'undofile.dat'
INITIAL_SIZE 16M
UNDO_BUFFER_SIZE = 1M;
ALTER LOGFILE GROUP lg1
ADD UNDOFILE 'undofile02.dat'
INITIAL_SIZE = 4M 
ENGINE=NDB;
set storage_engine=myisam;
CREATE TABLESPACE ts1
ADD DATAFILE 'datafile.dat'
USE LOGFILE GROUP lg1
INITIAL_SIZE 12M
ENGINE NDB;
ALTER TABLESPACE ts1
ADD DATAFILE 'datafile02.dat'
INITIAL_SIZE = 4M 
ENGINE=NDB;
CREATE TABLE t1
(pk1 INT NOT NULL PRIMARY KEY, b INT NOT NULL, c INT NOT NULL)
TABLESPACE ts1 STORAGE DISK
ENGINE=NDB;
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `pk1` int(11) NOT NULL,
  `b` int(11) NOT NULL,
  `c` int(11) NOT NULL,
  PRIMARY KEY (`pk1`)
) /*!50100 TABLESPACE ts1 STORAGE DISK */ ENGINE=ndbcluster DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES (0, 0, 0);
SELECT * FROM t1;
pk1	b	c
0	0	0
INSERT INTO t1 VALUES 
(1,1,1),(2,2,2),(3,3,3),(4,4,4),(5,5,5),
(6,6,6),(7,7,7),(8,8,8),(9,9,9),(10,10,10),
(11,11,11),(12,12,12),(13,13,13),(14,14,14),(15,15,15),
(16,16,16),(17,17,17),(18,18,18),(19,19,19),(20,20,20),
(21,21,21),(22,22,22),(23,23,23),(24,24,24),(25,25,25),
(26,26,26),(27,27,27),(28,28,28),(29,29,29),(30,30,30),
(31,31,31),(32,32,32),(33,33,33),(34,34,34),(35,35,35),
(36,36,36),(37,37,37),(38,38,38),(39,39,39),(40,40,40),
(41,41,41),(42,42,42),(43,43,43),(44,44,44),(45,45,45),
(46,46,46),(47,47,47),(48,48,48),(49,49,49),(50,50,50),
(51,51,51),(52,52,52),(53,53,53),(54,54,54),(55,55,55),
(56,56,56),(57,57,57),(58,58,58),(59,59,59),(60,60,60),
(61,61,61),(62,62,62),(63,63,63),(64,64,64),(65,65,65),
(66,66,66),(67,67,67),(68,68,68),(69,69,69),(70,70,70),
(71,71,71),(72,72,72),(73,73,73),(74,74,74),(75,75,75),
(76,76,76),(77,77,77),(78,78,78),(79,79,79),(80,80,80),
(81,81,81),(82,82,82),(83,83,83),(84,84,84),(85,85,85),
(86,86,86),(87,87,87),(88,88,88),(89,89,89),(90,90,90),
(91,91,91),(92,92,92),(93,93,93),(94,94,94),(95,95,95),
(96,96,96),(97,97,97),(98,98,98),(99,99,99),(100,100,100),
(101,101,101),(102,102,102),(103,103,103),(104,104,104),(105,105,105),
(106,106,106),(107,107,107),(108,108,108),(109,109,109),(110,110,110),
(111,111,111),(112,112,112),(113,113,113),(114,114,114),(115,115,115),
(116,116,116),(117,117,117),(118,118,118),(119,119,119),(120,120,120),
(121,121,121),(122,122,122),(123,123,123),(124,124,124),(125,125,125),
(126,126,126),(127,127,127),(128,128,128),(129,129,129),(130,130,130),
(131,131,131),(132,132,132),(133,133,133),(134,134,134),(135,135,135),
(136,136,136),(137,137,137),(138,138,138),(139,139,139),(140,140,140),
(141,141,141),(142,142,142),(143,143,143),(144,144,144),(145,145,145),
(146,146,146),(147,147,147),(148,148,148),(149,149,149),(150,150,150),
(151,151,151),(152,152,152),(153,153,153),(154,154,154),(155,155,155),
(156,156,156),(157,157,157),(158,158,158),(159,159,159),(160,160,160),
(161,161,161),(162,162,162),(163,163,163),(164,164,164),(165,165,165),
(166,166,166),(167,167,167),(168,168,168),(169,169,169),(170,170,170),
(171,171,171),(172,172,172),(173,173,173),(174,174,174),(175,175,175),
(176,176,176),(177,177,177),(178,178,178),(179,179,179),(180,180,180),
(181,181,181),(182,182,182),(183,183,183),(184,184,184),(185,185,185),
(186,186,186),(187,187,187),(188,188,188),(189,189,189),(190,190,190),
(191,191,191),(192,192,192),(193,193,193),(194,194,194),(195,195,195),
(196,196,196),(197,197,197),(198,198,198),(199,199,199),(200,200,200),
(201,201,201),(202,202,202),(203,203,203),(204,204,204),(205,205,205),
(206,206,206),(207,207,207),(208,208,208),(209,209,209),(210,210,210),
(211,211,211),(212,212,212),(213,213,213),(214,214,214),(215,215,215),
(216,216,216),(217,217,217),(218,218,218),(219,219,219),(220,220,220),
(221,221,221),(222,222,222),(223,223,223),(224,224,224),(225,225,225),
(226,226,226),(227,227,227),(228,228,228),(229,229,229),(230,230,230),
(231,231,231),(232,232,232),(233,233,233),(234,234,234),(235,235,235),
(236,236,236),(237,237,237),(238,238,238),(239,239,239),(240,240,240),
(241,241,241),(242,242,242),(243,243,243),(244,244,244),(245,245,245),
(246,246,246),(247,247,247),(248,248,248),(249,249,249),(250,250,250),
(251,251,251),(252,252,252),(253,253,253),(254,254,254),(255,255,255),
(256,256,256),(257,257,257),(258,258,258),(259,259,259),(260,260,260),
(261,261,261),(262,262,262),(263,263,263),(264,264,264),(265,265,265),
(266,266,266),(267,267,267),(268,268,268),(269,269,269),(270,270,270),
(271,271,271),(272,272,272),(273,273,273),(274,274,274),(275,275,275),
(276,276,276),(277,277,277),(278,278,278),(279,279,279),(280,280,280),
(281,281,281),(282,282,282),(283,283,283),(284,284,284),(285,285,285),
(286,286,286),(287,287,287),(288,288,288),(289,289,289),(290,290,290),
(291,291,291),(292,292,292),(293,293,293),(294,294,294),(295,295,295),
(296,296,296),(297,297,297),(298,298,298),(299,299,299),(300,300,300),
(301,301,301),(302,302,302),(303,303,303),(304,304,304),(305,305,305),
(306,306,306),(307,307,307),(308,308,308),(309,309,309),(310,310,310),
(311,311,311),(312,312,312),(313,313,313),(314,314,314),(315,315,315),
(316,316,316),(317,317,317),(318,318,318),(319,319,319),(320,320,320),
(321,321,321),(322,322,322),(323,323,323),(324,324,324),(325,325,325),
(326,326,326),(327,327,327),(328,328,328),(329,329,329),(330,330,330),
(331,331,331),(332,332,332),(333,333,333),(334,334,334),(335,335,335),
(336,336,336),(337,337,337),(338,338,338),(339,339,339),(340,340,340),
(341,341,341),(342,342,342),(343,343,343),(344,344,344),(345,345,345),
(346,346,346),(347,347,347),(348,348,348),(349,349,349),(350,350,350),
(351,351,351),(352,352,352),(353,353,353),(354,354,354),(355,355,355),
(356,356,356),(357,357,357),(358,358,358),(359,359,359),(360,360,360),
(361,361,361),(362,362,362),(363,363,363),(364,364,364),(365,365,365),
(366,366,366),(367,367,367),(368,368,368),(369,369,369),(370,370,370),
(371,371,371),(372,372,372),(373,373,373),(374,374,374),(375,375,375),
(376,376,376),(377,377,377),(378,378,378),(379,379,379),(380,380,380),
(381,381,381),(382,382,382),(383,383,383),(384,384,384),(385,385,385),
(386,386,386),(387,387,387),(388,388,388),(389,389,389),(390,390,390),
(391,391,391),(392,392,392),(393,393,393),(394,394,394),(395,395,395),
(396,396,396),(397,397,397),(398,398,398),(399,399,399),(400,400,400),
(401,401,401),(402,402,402),(403,403,403),(404,404,404),(405,405,405),
(406,406,406),(407,407,407),(408,408,408),(409,409,409),(410,410,410),
(411,411,411),(412,412,412),(413,413,413),(414,414,414),(415,415,415),
(416,416,416),(417,417,417),(418,418,418),(419,419,419),(420,420,420),
(421,421,421),(422,422,422),(423,423,423),(424,424,424),(425,425,425),
(426,426,426),(427,427,427),(428,428,428),(429,429,429),(430,430,430),
(431,431,431),(432,432,432),(433,433,433),(434,434,434),(435,435,435),
(436,436,436),(437,437,437),(438,438,438),(439,439,439),(440,440,440),
(441,441,441),(442,442,442),(443,443,443),(444,444,444),(445,445,445),
(446,446,446),(447,447,447),(448,448,448),(449,449,449),(450,450,450),
(451,451,451),(452,452,452),(453,453,453),(454,454,454),(455,455,455),
(456,456,456),(457,457,457),(458,458,458),(459,459,459),(460,460,460),
(461,461,461),(462,462,462),(463,463,463),(464,464,464),(465,465,465),
(466,466,466),(467,467,467),(468,468,468),(469,469,469),(470,470,470),
(471,471,471),(472,472,472),(473,473,473),(474,474,474),(475,475,475),
(476,476,476),(477,477,477),(478,478,478),(479,479,479),(480,480,480),
(481,481,481),(482,482,482),(483,483,483),(484,484,484),(485,485,485),
(486,486,486),(487,487,487),(488,488,488),(489,489,489),(490,490,490),
(491,491,491),(492,492,492),(493,493,493),(494,494,494),(495,495,495),
(496,496,496),(497,497,497),(498,498,498),(499,499,499),(500, 500, 500);
SELECT COUNT(*) FROM t1;
COUNT(*)
501
CREATE LOGFILE GROUP lg2
ADD UNDOFILE 'x.dat'
INITIAL_SIZE 10y
ENGINE = NDB;
ERROR HY000: A size parameter was incorrectly specified, either number or on the form 10M
CREATE LOGFILE GROUP lg2
ADD UNDOFILE 'x.dat'
INITIAL_SIZE 10MB
ENGINE = NDB;
ERROR HY000: A size parameter was incorrectly specified, either number or on the form 10M
CREATE LOGFILE GROUP lg2
ADD UNDOFILE 'x.dat'
INITIAL_SIZE 10 MB
ENGINE = NDB;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'MB
ENGINE = NDB' at line 3
CREATE LOGFILE GROUP lg2
ADD UNDOFILE 'x.dat'
INITIAL_SIZE 10 M
ENGINE = NDB;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'M
ENGINE = NDB' at line 3
CREATE LOGFILE GROUP lg2
ADD UNDOFILE 'x.dat'
INITIAL_SIZE 1000000000000K
ENGINE = NDB;
ERROR HY000: The size number was correct but we don't allow the digit part to be more than 2 billion
DROP TABLE t1;
create tablespace ts2
add datafile 'datafile2_1.dat'
use logfile group lg1
initial_size 12M
engine ndb;
CREATE TABLE City (
ID int(11) NOT NULL AUTO_INCREMENT,
Name char(35) NOT NULL,
CountryCode char(3) NOT NULL,
District char(20) NOT NULL,
Population int(11) NOT NULL,
PRIMARY KEY (ID)
) ENGINE=ndbcluster
tablespace ts2
storage disk;
alter tablespace ts2
drop datafile 'datafile2_1.dat'
engine ndb;
insert
into City (Name,CountryCode,District,Population)
values ('BeiJing','CN','Beijing',2000);
ERROR HY000: Got error 1602 'No datafile in tablespace' from NDBCLUSTER
drop tablespace ts2
engine ndb;
ERROR HY000: Failed to drop TABLESPACE
drop table City;
drop tablespace ts2
engine ndb;
CREATE TABLE t1 (a INT PRIMARY KEY, b CHAR(4) NOT NULL, c CHAR(4) NOT NULL, KEY(b)) TABLESPACE ts1 STORAGE DISK ENGINE = NDB;
INSERT INTO t1 VALUES (1,'1','1'), (2,'2','2'), (3,'3','3');
BEGIN;
UPDATE t1 SET b = '2' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
2
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	2	1
UPDATE t1 SET c = '2' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
2
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	2	2
UPDATE t1 SET b = '3' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
3
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	3	2
COMMIT;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	3	2
2	2	2
3	3	3
BEGIN;
UPDATE t1 SET c = '3' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
3
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	3	3
UPDATE t1 SET b = '4' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
4
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	4	3
UPDATE t1 SET c = '4' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
4
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	4	4
COMMIT;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	4	4
2	2	2
3	3	3
UPDATE t1 SET b = '5' WHERE a = 1;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	5	4
2	2	2
3	3	3
UPDATE t1 SET b = '6' WHERE b = '5';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	6	4
2	2	2
3	3	3
UPDATE t1 SET b = '7'WHERE c = '4';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	4
2	2	2
3	3	3
UPDATE t1 SET c = '5' WHERE a = 1;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	5
2	2	2
3	3	3
UPDATE t1 SET c = '6' WHERE b = '7';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	6
2	2	2
3	3	3
UPDATE t1 SET c = '7' WHERE c = '6';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	7
2	2	2
3	3	3
DROP TABLE t1;
CREATE TABLE t1 (a INT PRIMARY KEY, b VARCHAR(4) NOT NULL, c CHAR(4) NOT NULL, KEY(b)) TABLESPACE ts1 STORAGE DISK ENGINE NDB;
INSERT INTO t1 VALUE (1,'1','1'), (2,'2','2'), (3,'3','3');
BEGIN;
UPDATE t1 SET b = '2' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
2
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	2	1
UPDATE t1 SET c = '2' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
2
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	2	2
UPDATE t1 SET b = '3' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
3
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	3	2
COMMIT;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	3	2
2	2	2
3	3	3
BEGIN;
UPDATE t1 SET c = '3' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
3
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	3	3
UPDATE t1 SET b = '4' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
4
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	4	3
UPDATE t1 SET c = '4' WHERE a = 1;
SELECT b FROM t1 WHERE a = 1;
b
4
SELECT * FROM t1 WHERE a = 1;
a	b	c
1	4	4
COMMIT;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	4	4
2	2	2
3	3	3
UPDATE t1 SET b = '5' WHERE a = 1;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	5	4
2	2	2
3	3	3
UPDATE t1 SET b = '6' WHERE b = '5';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	6	4
2	2	2
3	3	3
UPDATE t1 SET b = '7' WHERE c = '4';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	4
2	2	2
3	3	3
UPDATE t1 SET c = '5' WHERE a = 1;
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	5
2	2	2
3	3	3
UPDATE t1 SET c = '6' WHERE b = '7';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	6
2	2	2
3	3	3
UPDATE t1 SET c = '7' WHERE c = '6';
SELECT * FROM t1 ORDER BY 1;
a	b	c
1	7	7
2	2	2
3	3	3
DELETE FROM t1;
INSERT INTO t1 VALUES (3,'1','1');
BEGIN;
UPDATE t1 SET b = b + 2 WHERE A = 3;
DELETE FROM t1 WHERE A = 3;
INSERT INTO t1 VALUES (3,'0','0');
COMMIT;
SELECT * from t1 ORDER BY 1;
a	b	c
3	0	0
DROP TABLE t1;
CREATE TABLE t1 (
a INT NOT NULL PRIMARY KEY,
b TEXT NOT NULL
) TABLESPACE ts1 STORAGE DISK ENGINE=NDBCLUSTER;
set @x0 = '01234567012345670123456701234567';
set @x0 = concat(@x0,@x0,@x0,@x0,@x0,@x0,@x0,@x0);
set @b1 = 'b1';
set @b1 = concat(@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1);
set @b1 = concat(@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1);
set @b1 = concat(@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1,@b1);
set @b1 = concat(@b1,@x0);
set @b2 = 'b2';
set @b2 = concat(@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2);
set @b2 = concat(@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2);
set @b2 = concat(@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2);
set @b2 = concat(@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2,@b2);
INSERT INTO t1 VALUES(1,@b1);
INSERT INTO t1 VALUES(2,@b2);
SELECT a,length(b),substr(b,1+2*900,2) FROM t1 WHERE a=1;
a	length(b)	substr(b,1+2*900,2)
1	2256	b1
SELECT a,length(b),substr(b,1+2*9000,2) FROM t1 WHERE a=2;
a	length(b)	substr(b,1+2*9000,2)
2	20000	b2
UPDATE t1 SET b=@b2 WHERE a=1;
UPDATE t1 SET b=@b1 WHERE a=2;
SELECT a,length(b),substr(b,1+2*9000,2) FROM t1 WHERE a=1;
a	length(b)	substr(b,1+2*9000,2)
1	20000	b2
SELECT a,length(b),substr(b,1+2*900,2) FROM t1 WHERE a=2;
a	length(b)	substr(b,1+2*900,2)
2	2256	b1
UPDATE t1 SET b=concat(b,b) WHERE a=1;
UPDATE t1 SET b=concat(b,b) WHERE a=2;
SELECT a,length(b),substr(b,1+4*9000,2) FROM t1 WHERE a=1;
a	length(b)	substr(b,1+4*9000,2)
1	40000	b2
SELECT a,length(b),substr(b,1+4*900,2) FROM t1 WHERE a=2;
a	length(b)	substr(b,1+4*900,2)
2	4512	b1
DELETE FROM t1 WHERE a=1;
DELETE FROM t1 WHERE a=2;
SELECT COUNT(*) FROM t1;
COUNT(*)
0
DROP TABLE t1;
CREATE TABLE t1 (
a int NOT NULL,
b varchar(4000),  -- must use 2 pages undo
PRIMARY KEY using hash (a)
)
TABLESPACE ts1 STORAGE DISK ENGINE=NDBCLUSTER;
set autocommit = 0;
insert into t1 values(0,'x');
insert into t1 values(1,'x');
insert into t1 values(2,'x');
insert into t1 values(3,'x');
insert into t1 values(4,'x');
insert into t1 values(5,'x');
insert into t1 values(6,'x');
insert into t1 values(7,'x');
insert into t1 values(8,'x');
delete from t1 where a = 0;
commit;
delete from t1;
begin;
insert into t1 values (1, 'x');
select * from t1;
a	b
1	x
rollback;
set autocommit = 1;
drop table t1;
create table test.t1 (f1 varchar(50) primary key, f2 text,f3 int) 
TABLESPACE ts1 STORAGE DISK engine=NDB;
insert into test.t1 (f1,f2,f3)VALUES("111111","aaaaaa",1);
insert into test.t1 (f1,f2,f3)VALUES("222222","bbbbbb",2);
select * from test.t1 order by f1;
f1	f2	f3
111111	aaaaaa	1
222222	bbbbbb	2
select f1,f2 from test.t1 order by f2;
f1	f2
111111	aaaaaa
222222	bbbbbb
select f2 from test.t1 order by f2;
f2
aaaaaa
bbbbbb
select f1,f2 from test.t1 order by f1;
f1	f2
111111	aaaaaa
222222	bbbbbb
drop table test.t1;
CREATE TABLE t1 (
id int unsigned NOT NULL,
c1 int unsigned NOT NULL,
c2 int DEFAULT NULL,
PRIMARY KEY using hash (id),
UNIQUE KEY c1 using hash (c1))
TABLESPACE ts1 STORAGE DISK ENGINE=ndbcluster;
insert into t1 values(1, 1, 3);
insert into t1 values(2, 2, 3);
update t1 set c1 = 1 where id = 2;
ERROR 23000: Duplicate entry '1' for key 'c1'
drop table t1;
ALTER TABLESPACE ts1 
DROP DATAFILE 'datafile.dat' 
ENGINE = NDB;
ALTER TABLESPACE ts1 
DROP DATAFILE 'datafile02.dat' 
ENGINE = NDB;
DROP TABLESPACE ts1 
ENGINE = NDB;
DROP LOGFILE GROUP lg1 
ENGINE =NDB;