forked from docs/doc-exports
Lu, Huayi
346ac31da9
Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com> Reviewed-by: Jiang, Beibei <beibei.jiang@t-systems.com> Co-authored-by: Lu, Huayi <luhuayi@huawei.com> Co-committed-by: Lu, Huayi <luhuayi@huawei.com>
39 lines
3.9 KiB
HTML
39 lines
3.9 KiB
HTML
<a name="EN-US_TOPIC_0000001234042143"></a><a name="EN-US_TOPIC_0000001234042143"></a>
|
|
|
|
<h1 class="topictitle1">ACCESS LOCK</h1>
|
|
<div id="body8662426"><p id="EN-US_TOPIC_0000001234042143__en-us_topic_0238518358_en-us_topic_0237362392_p58281854183811">ACCESS LOCK allows you to read the data from a table that may have been locked for the READ or WRITE.</p>
|
|
<p id="EN-US_TOPIC_0000001234042143__en-us_topic_0238518358_en-us_topic_0237362392_p1396735112616">Use the <strong id="EN-US_TOPIC_0000001234042143__en-us_topic_0237712582_b99161233172310"><a href="dws_mt_0026.html#EN-US_TOPIC_0000001233922159__en-us_topic_0218440346_li18084318118">tdMigrateLOCKOption</a></strong> configuration parameter to configure migration of query containing the LOCK keyword. If <strong id="EN-US_TOPIC_0000001234042143__en-us_topic_0237712582_b452819910175">tdMigrateLOCKOption</strong> is set to <strong id="EN-US_TOPIC_0000001234042143__en-us_topic_0237712582_b633211331713">false</strong>, the tool will skip migration of the query and will log a message.</p>
|
|
<p id="EN-US_TOPIC_0000001234042143__en-us_topic_0238518358_en-us_topic_0237362392_p67491859133316"><strong id="EN-US_TOPIC_0000001234042143__en-us_topic_0237712582_b1374914596336">Input - ACCESS LOCK</strong><strong id="EN-US_TOPIC_0000001234042143__en-us_topic_0237712582_b1819735141711"> (tdMigrateLOCKOption=True</strong>)</p>
|
|
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001234042143__en-us_topic_0238518358_en-us_topic_0237362392_screen1749321717399"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span>
|
|
<span class="normal">2</span>
|
|
<span class="normal">3</span>
|
|
<span class="normal">4</span>
|
|
<span class="normal">5</span></pre></div></td><td class="code"><div><pre><span></span><span class="n">LOCKING</span><span class="w"> </span><span class="k">TABLE</span><span class="w"> </span><span class="n">tab1</span><span class="w"> </span><span class="k">FOR</span><span class="w"> </span><span class="k">ACCESS</span>
|
|
<span class="w"> </span><span class="k">INSERT</span><span class="w"> </span><span class="k">INTO</span><span class="w"> </span><span class="n">tab2</span>
|
|
<span class="w"> </span><span class="k">SELECT</span><span class="w"> </span><span class="err">…</span>
|
|
<span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="err">…</span>
|
|
<span class="w"> </span><span class="k">WHERE</span><span class="w"> </span><span class="p">...;</span>
|
|
</pre></div></td></tr></table></div>
|
|
|
|
</div>
|
|
<p id="EN-US_TOPIC_0000001234042143__en-us_topic_0238518358_en-us_topic_0237362392_p1349431716399"><strong id="EN-US_TOPIC_0000001234042143__en-us_topic_0237712582_b11750459113318">Output</strong></p>
|
|
<div class="codecoloring" codetype="Sql" id="EN-US_TOPIC_0000001234042143__en-us_topic_0238518358_en-us_topic_0237362392_screen1495117103912"><div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span class="normal">1</span>
|
|
<span class="normal">2</span>
|
|
<span class="normal">3</span>
|
|
<span class="normal">4</span>
|
|
<span class="normal">5</span></pre></div></td><td class="code"><div><pre><span></span><span class="cm">/* LOCKING TABLE tab1 FOR ACCESS */</span>
|
|
<span class="k">INSERT</span><span class="w"> </span><span class="k">INTO</span><span class="w"> </span><span class="n">tab2</span><span class="w"> </span>
|
|
<span class="w"> </span><span class="k">SELECT</span><span class="w"> </span><span class="err">…</span>
|
|
<span class="w"> </span><span class="k">FROM</span><span class="w"> </span><span class="err">…</span>
|
|
<span class="w"> </span><span class="k">WHERE</span><span class="w"> </span><span class="p">...;</span>
|
|
</pre></div></td></tr></table></div>
|
|
|
|
</div>
|
|
</div>
|
|
<div>
|
|
<div class="familylinks">
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="dws_mt_0046.html">Schema Objects</a></div>
|
|
</div>
|
|
</div>
|
|
|