forked from docs/doc-exports
Lu, Huayi
27019c2991
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
27 lines
2.1 KiB
HTML
27 lines
2.1 KiB
HTML
<a name="EN-US_TOPIC_0000001819336177"></a><a name="EN-US_TOPIC_0000001819336177"></a>
|
|
|
|
<h1 class="topictitle1">BLOCK_SIZE</h1>
|
|
<div id="body8662426"><p id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_p8060118">In ADB, this parameter specifies the number of values stored in each block in columnar storage, which is also the minimum I/O unit. GaussDB(DWS does not support table definition modification using this attribute. DSC will delete the keyword during migration.</p>
|
|
<p id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_p189481310494"><strong id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_b11333101313113">Input</strong></p>
|
|
<pre class="screen" id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_screen860331891013">drop table if exists unsupport_parse_test;
|
|
create table `unsupport_parse_test` (
|
|
`username` int,
|
|
`update` timestamp not null default current_timestamp on update current_timestamp ,
|
|
clustered key clustered_key(shopid ASC, datetype ASC)
|
|
)BLOCK_SIZE = 1024 index_ALL = 'y';
|
|
drop table if exists unsupport_parse_test;</pre>
|
|
<p id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_p3109141716912"><strong id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_b1795514931118">Output</strong></p>
|
|
<pre class="screen" id="EN-US_TOPIC_0000001819336177__en-us_topic_0000001658024862_en-us_topic_0000001447210609_screen1090715309105">DROP TABLE IF EXISTS "public"."unsupport_parse_test";
|
|
CREATE TABLE "public"."unsupport_parse_test" (
|
|
"username" INTEGER,
|
|
"update" TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP
|
|
) WITH (ORIENTATION = ROW, COMPRESSION = NO) NOCOMPRESS DISTRIBUTE BY HASH ("username");
|
|
DROP TABLE IF EXISTS "public"."unsupport_parse_test";</pre>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_16_0119.html">Table (Optional Parameters and Operations)</a></div>
|
|
</div>
|
|
</div>
|
|
|