forked from laiweijian4/doc-exports
Hasko, Vladimir
a5cc543164
Reviewed-by: Wagner, Fabian <fabian.wagner@t-systems.com> Co-authored-by: Hasko, Vladimir <vladimir.hasko@t-systems.com> Co-committed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
13 lines
821 B
HTML
13 lines
821 B
HTML
<a name="ddm_04_0015"></a><a name="ddm_04_0015"></a>
|
|
|
|
<h1 class="topictitle1">Does DDM Support Distributed JOINs?</h1>
|
|
<div id="body48149559"><p class="litext" id="ddm_04_0015__p57286661">Yes. DDM supports <span class="keyword" id="ddm_04_0015__keyword197763413106">distributed JOINs</span>.</p>
|
|
<ul id="ddm_04_0015__ul45817908"><li id="ddm_04_0015__li30692852">Redundant fields are added during table design.</li><li id="ddm_04_0015__li7800215">Cross-shard JOIN is implemented by using broadcast tables, ER shards, and ShareJoin.</li><li id="ddm_04_0015__li839712352433">Currently, DDM does not allow cross-schema update or deletion of multiple tables.</li></ul>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="ddm_04_0046.html">SQL Syntax</a></div>
|
|
</div>
|
|
</div>
|
|
|