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<?xml-stylesheet type="text/xsl" href="https://www.dotnetzone.gr:443/cs/utility/FeedStylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Πρώτα Βήματα - Βάσεις δεδομένων</title><link>https://www.dotnetzone.gr:443/cs/forums/73/ShowForum.aspx</link><description>Για όσους κάνουν τα πρώτα τους βήματα στην Microsoft Access ή τον SQL Server, ή γενικότερα στη θεωρία βάσεων δεδομένων.</description><dc:language>el</dc:language><generator>CommunityServer 2.1 SP3 (Build: 20423.1)</generator><item><title>Απ: Converting varchar to datetime</title><link>https://www.dotnetzone.gr:443/cs/forums/thread/36858.aspx</link><pubDate>Thu, 01 Nov 2007 21:33:51 GMT</pubDate><guid isPermaLink="false">2622095e-976c-431a-859e-16783ec7ecd7:36858</guid><dc:creator>spaceman</dc:creator><slash:comments>0</slash:comments><comments>https://www.dotnetzone.gr:443/cs/forums/thread/36858.aspx</comments><wfw:commentRss>https://www.dotnetzone.gr:443/cs/forums/commentrss.aspx?SectionID=73&amp;PostID=36858</wfw:commentRss><description>&lt;FONT color=#0000ff size=2&gt;
&lt;P&gt;SELECT&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#ff00ff size=2&gt;CONVERT&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;(&lt;/FONT&gt;&lt;FONT color=#0000ff size=2&gt;varchar&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;(&lt;/FONT&gt;&lt;FONT size=2&gt;30&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;),&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#ff00ff size=2&gt;CAST&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;(&lt;/FONT&gt;&lt;FONT color=#ff00ff size=2&gt;STUFF&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;(&lt;/FONT&gt;&lt;FONT size=2&gt;@myvar&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;,&lt;/FONT&gt;&lt;FONT size=2&gt; 3&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;,&lt;/FONT&gt;&lt;FONT size=2&gt; 0&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;,&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#ff0000 size=2&gt;':'&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;)&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#0000ff size=2&gt;AS&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#0000ff size=2&gt;DATETIME&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;),&lt;/FONT&gt;&lt;FONT size=2&gt; 114&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;)&lt;/P&gt;&lt;/FONT&gt;&lt;FONT color=#0000ff size=2&gt;
&lt;P&gt;WHERE&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#ff00ff size=2&gt;ISDATE&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;(&lt;/FONT&gt;&lt;FONT color=#ff00ff size=2&gt;STUFF&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;(&lt;/FONT&gt;&lt;FONT size=2&gt;@myvar&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;,&lt;/FONT&gt;&lt;FONT size=2&gt; 3&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;,&lt;/FONT&gt;&lt;FONT size=2&gt; 0&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;,&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#ff0000 size=2&gt;':'&lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;))&lt;/FONT&gt;&lt;FONT size=2&gt; &lt;/FONT&gt;&lt;FONT color=#808080 size=2&gt;=&lt;/FONT&gt;&lt;FONT size=2&gt; 1&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;&lt;FONT size=2&gt;-- HTH --&lt;/P&gt;&lt;/FONT&gt;</description></item><item><title>Converting varchar to datetime</title><link>https://www.dotnetzone.gr:443/cs/forums/thread/36849.aspx</link><pubDate>Thu, 01 Nov 2007 07:20:30 GMT</pubDate><guid isPermaLink="false">2622095e-976c-431a-859e-16783ec7ecd7:36849</guid><dc:creator>nikolaosk</dc:creator><slash:comments>0</slash:comments><comments>https://www.dotnetzone.gr:443/cs/forums/thread/36849.aspx</comments><wfw:commentRss>https://www.dotnetzone.gr:443/cs/forums/commentrss.aspx?SectionID=73&amp;PostID=36849</wfw:commentRss><description>&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;FONT style="BACKGROUND-COLOR:#ffffff;" face="Courier New" color=#000080 size=3&gt;με αφορμή, πάλι ερώτηση φίλου, που ήθελε να μετατρέψει μια varchar του τύπου hhmm σε μία datetime, της μορφής 14:30:00. Η Varchar Τιμή είναι hhmm=1430&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;&lt;FONT style="BACKGROUND-COLOR:#ffffff;" face="Courier New" color=#000080 size=3&gt;code snippet follows&lt;/FONT&gt;&lt;/P&gt;
&lt;P&gt;&lt;FONT style="BACKGROUND-COLOR:#f5f5dc;" color=#000000&gt;&lt;/FONT&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;
&lt;TABLE style="BORDER-RIGHT:#e5e5e5 1px solid;BORDER-TOP:#e5e5e5 1px solid;BORDER-LEFT:#e5e5e5 1px solid;BORDER-BOTTOM:#e5e5e5 1px solid;BACKGROUND-COLOR:#f2f2f2;" cellSpacing=0 cellPadding=0 width="100%" border=0&gt;

&lt;TR style="VERTICAL-ALIGN:top;LINE-HEIGHT:normal;"&gt;
&lt;TD style="WIDTH:40px;TEXT-ALIGN:right;"&gt;&lt;PRE style="BORDER-RIGHT:#e7e7e7 1px solid;PADDING-RIGHT:2px;PADDING-LEFT:2px;FONT-SIZE:11px;PADDING-BOTTOM:2px;MARGIN:0px;COLOR:gray;PADDING-TOP:2px;FONT-FAMILY:courier new;"&gt;1&lt;BR&gt;2&lt;BR&gt;3&lt;BR&gt;4&lt;BR&gt; &lt;/PRE&gt;&lt;/TD&gt;
&lt;TD&gt;&lt;PRE style="PADDING-RIGHT:2px;PADDING-LEFT:8px;PADDING-BOTTOM:2px;MARGIN:0px;PADDING-TOP:2px;"&gt;&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:black;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;declare&lt;/SPAN&gt; @myvar &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;varchar&lt;/SPAN&gt;(10)&lt;BR&gt;&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;set&lt;/SPAN&gt; @myvar = &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;right&lt;/SPAN&gt;(&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:red;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;'0000'&lt;/SPAN&gt; + &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:red;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;'1430'&lt;/SPAN&gt;,4)&lt;BR&gt;&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;select&lt;/SPAN&gt;  &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;left&lt;/SPAN&gt;(@myvar,2) &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;as&lt;/SPAN&gt; hour, &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;right&lt;/SPAN&gt;(@myvar,2) &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;as&lt;/SPAN&gt; minutes, &lt;BR&gt;&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;convert&lt;/SPAN&gt;(&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;varchar&lt;/SPAN&gt;(20),&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;dateadd&lt;/SPAN&gt;(minute, &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;cast&lt;/SPAN&gt;(&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;right&lt;/SPAN&gt;(@myvar,2) &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;as&lt;/SPAN&gt; &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;int&lt;/SPAN&gt;), &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;dateadd&lt;/SPAN&gt;(hour, &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;cast&lt;/SPAN&gt;(&lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:fuchsia;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;left&lt;/SPAN&gt;(@myvar,2) &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;as&lt;/SPAN&gt; &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;int&lt;/SPAN&gt;), 0 )),8) &lt;SPAN style="FONT-WEIGHT:normal;FONT-SIZE:11px;COLOR:blue;FONT-FAMILY:Courier New;BACKGROUND-COLOR:transparent;"&gt;as&lt;/SPAN&gt; finaltime&lt;/SPAN&gt;&lt;/PRE&gt;&lt;/TD&gt;&lt;/TR&gt;&lt;/TABLE&gt;&lt;/P&gt;</description></item></channel></rss>