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	<title>字串 &#8211; 21點情報網</title>
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		<title>MYSQL/Mariadb資料庫取代欄位中的特定字串語法</title>
		<link>https://ailog.tw/lifelog/2022/03/25/mysql-replace/</link>
		
		<dc:creator><![CDATA[blackjack]]></dc:creator>
		<pubDate>Fri, 25 Mar 2022 05:32:17 +0000</pubDate>
				<category><![CDATA[3C資訊]]></category>
		<category><![CDATA[Database]]></category>
		<category><![CDATA[MariaDB]]></category>
		<category><![CDATA[MySQL]]></category>
		<category><![CDATA[REPLACE]]></category>
		<category><![CDATA[取代]]></category>
		<category><![CDATA[字串]]></category>
		<category><![CDATA[資料庫]]></category>
		<guid isPermaLink="false">https://ailog.tw/lifelog/?p=12681</guid>

					<description><![CDATA[日常比較容易遇到取代Word、Excel、TXT檔案字串的應用，但MYSQL/Mariadb欄位如果有需要取代 &#8230; <p class="link-more"><a href="https://ailog.tw/lifelog/2022/03/25/mysql-replace/" class="more-link">閱讀全文<span class="screen-reader-text">〈MYSQL/Mariadb資料庫取代欄位中的特定字串語法〉</span></a></p>]]></description>
										<content:encoded><![CDATA[<p><span style="font-size: 14pt; font-family: verdana, geneva;">日常比較容易遇到取代Word、Excel、TXT檔案字串的應用，但MYSQL/Mariadb欄位如果有需要取代特定字串該如何進行?小編今天來介紹一下資料庫欄位的字串取代語法。<span id="more-12681"></span></span></p>
<p><span style="font-family: verdana, geneva; font-size: 14pt;"><strong>[範例情境]</strong></span><br />
<span style="font-family: verdana, geneva; font-size: 14pt;">資料庫：Mariadb 10.5.13</span></p>
<p><span style="font-family: verdana, geneva; font-size: 14pt;">語法：</span><br />
<span style="font-family: verdana, geneva; font-size: 14pt;">UPDATE 資料表名稱 SET 欄位名稱 = REPLACE(欄位名稱, &#8216;原本字串&#8217;, &#8216;替換字串&#8217;) WHERE 欄位名稱 LIKE &#8216;%原本字串%&#8217;;</span></p>
<p><span style="font-family: verdana, geneva; font-size: 14pt;">範例：</span><br />
<span style="font-family: verdana, geneva; font-size: 14pt;">UPDATE <span style="color: #ff0000;">testtable</span> SET <span style="color: #ff0000;">Description</span> = REPLACE(<span style="color: #ff0000;">Description</span>, &#8216;<span style="color: #ff0000;">aaa</span>&#8216;, &#8216;<span style="color: #ff0000;">bbb</span>&#8216;) WHERE <span style="color: #ff0000;">Description</span> LIKE &#8216;%<span style="color: #ff0000;">aaa</span>%&#8217;;</p>
<p>補充說明：</span><br />
<span style="font-family: verdana, geneva; font-size: 14pt;">紅色字體部分請依據實際狀況修改</span></p>
<p>&nbsp;</p>
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