Help Center/ GaussDB(DWS)/ Tool Guide/ DSC/ SQL Syntax Migration Reference/ MySQL Syntax Migrating/ Schema Objects and Data Definition Language (DDL)/ Table (Optional Parameters and Operations)/ STATS_PERSISTENT
Updated on 2024-07-19 GMT+08:00
View PDF

STATS_PERSISTENT

In MySQL, STATS_PERSISTENT specifies whether to enable persistence statistics for an InnoDB table. The CREATE TABLE and ALTER TABLE statements can be used to enable persistence statistics. DSC will delete this attribute during migration.

Input

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
 
CREATE TABLE `public`.`runoob_alter_test`(
    `dataType1` int NOT NULL AUTO_INCREMENT,
    `dataType2` DOUBLE(20,8),
    `dataType3` TEXT NOT NULL,
    PRIMARY KEY(`dataType1`)
) ENGINE=InnoDB, STATS_PERSISTENT=0;

## A.
ALTER TABLE runoob_alter_test STATS_PERSISTENT DEFAULT;
ALTER TABLE runoob_alter_test STATS_PERSISTENT=DEFAULT;

## B.
ALTER TABLE runoob_alter_test STATS_PERSISTENT 0;
ALTER TABLE runoob_alter_test STATS_PERSISTENT=0;

## C.
ALTER TABLE runoob_alter_test STATS_PERSISTENT 1;
ALTER TABLE runoob_alter_test STATS_PERSISTENT=1;

Output

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
 
CREATE TABLE "public"."runoob_alter_test"
(
  "datatype1" SERIAL NOT NULL,
  "datatype2" DOUBLE PRECISION,
  "datatype3" TEXT NOT NULL,
  PRIMARY KEY ("datatype1")
)
  WITH ( ORIENTATION = ROW, COMPRESSION = NO )
  NOCOMPRESS
  DISTRIBUTE BY HASH ("datatype1");

-- A.

-- B.

-- C.