{"id":846,"date":"2025-10-30T15:30:47","date_gmt":"2025-10-30T14:30:47","guid":{"rendered":"https:\/\/www.silverice.it\/IpercubeTechWP1\/?page_id=846"},"modified":"2025-10-30T15:32:29","modified_gmt":"2025-10-30T14:32:29","slug":"tableexists","status":"publish","type":"page","link":"https:\/\/www.silverice.it\/IpercubeTechWP1\/ipercube-utilities\/sql-functions\/tableexists\/","title":{"rendered":"Table Exists"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Determines whether a table with the specified name exists in the given SQL Server connection.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If the schema is not specified, the default schema &#8220;dbo&#8221; is assumed.<\/li>\n\n\n\n<li>Square brackets around schema or table names are trimmed automatically.<\/li>\n\n\n\n<li>Uses INFORMATION_SCHEMA to check for table existence with parameterized query to avoid SQL injection.<\/li>\n\n\n\n<li>The\u00a0<strong>MyConnection<\/strong>\u00a0must be open before calling this method.<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:75%\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column page-snippet is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-kevinbatdorf-code-block-pro cbp-has-line-numbers\" data-code-block-pro-font-family=\"Code-Pro-Geist-Mono\" style=\"font-size:.875rem;font-family:Code-Pro-Geist-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;--cbp-line-number-color:#D4D4D4;--cbp-line-number-width:calc(2 * 0.6 * .875rem);line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)\"><span style=\"display:flex;align-items:center;padding:10px 0px 10px 16px;margin-bottom:-2px;width:100%;text-align:left;background-color:#2b2b2b;color:#c7c7c7\">VB<\/span><span role=\"button\" tabindex=\"0\" style=\"color:#D4D4D4;display:none\" aria-label=\"Copy\" class=\"code-block-pro-copy-button\"><pre class=\"code-block-pro-copy-button-pre\" aria-hidden=\"true\"><textarea class=\"code-block-pro-copy-button-textarea\" tabindex=\"-1\" aria-hidden=\"true\" readonly>    Public Function TableExists(MyConnection As SqlConnection, \n                                tableName As String) As Boolean\n\n        ' Split into schema and table\n        Dim schema As String = \"dbo\"\n        Dim name As String = tableName\n\n        If tableName.Contains(\".\") Then\n            Dim parts = tableName.Split(\".\"c)\n            If parts.Length = 2 Then\n                schema = parts(0).Trim(\"&#91;\"c, \"&#93;\"c)\n                name = parts(1).Trim(\"&#91;\"c, \"&#93;\"c)\n            End If\n        Else\n            name = tableName.Trim(\"&#91;\"c, \"&#93;\"c)\n        End If\n\n        Dim cmdText As String = \"SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES \" +\n                                \" WHERE TABLE_SCHEMA = @schema AND TABLE_NAME = @name\"\n\n        Using cmd As New SqlCommand(cmdText, MyConnection)\n            cmd.Parameters.AddWithValue(\"@schema\", schema)\n            cmd.Parameters.AddWithValue(\"@name\", name)\n\n            Dim count As Integer = Convert.ToInt32(cmd.ExecuteScalar())\n            Return count > 0\n        End Using\n    End Function<\/textarea><\/pre><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:24px;height:24px\" fill=\"none\" viewBox=\"0 0 24 24\" stroke=\"currentColor\" stroke-width=\"2\"><path class=\"with-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M4.5 12.75l6 6 9-13.5\"><\/path><path class=\"without-check\" stroke-linecap=\"round\" stroke-linejoin=\"round\" d=\"M16.5 8.25V6a2.25 2.25 0 00-2.25-2.25H6A2.25 2.25 0 003.75 6v8.25A2.25 2.25 0 006 16.5h2.25m8.25-8.25H18a2.25 2.25 0 012.25 2.25V18A2.25 2.25 0 0118 20.25h-7.5A2.25 2.25 0 018.25 18v-1.5m8.25-8.25h-6a2.25 2.25 0 00-2.25 2.25v6\"><\/path><\/svg><\/span><pre class=\"shiki dark-plus\" style=\"background-color: #1E1E1E\" tabindex=\"0\"><code><span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">Public Function <\/span><span style=\"color: #DCDCAA\">TableExists<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">MyConnection<\/span><span style=\"color: #D4D4D4\"> As <\/span><span style=\"color: #4EC9B0\">SqlConnection<\/span><span style=\"color: #D4D4D4\">, <\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                                tableName As <\/span><span style=\"color: #4EC9B0\">String<\/span><span style=\"color: #D4D4D4\">) As <\/span><span style=\"color: #4EC9B0\">Boolean<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #6A9955\">&#39; Split into schema and table<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> schema <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">String<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;dbo&quot;<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> name <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">String<\/span><span style=\"color: #D4D4D4\"> =<\/span><span style=\"color: #9CDCFE\"> tableName<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">If<\/span><span style=\"color: #D4D4D4\"> tableName.<\/span><span style=\"color: #DCDCAA\">Contains<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;.&quot;<\/span><span style=\"color: #D4D4D4\">) <\/span><span style=\"color: #C586C0\">Then<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> parts <\/span><span style=\"color: #D4D4D4\">= tableName.<\/span><span style=\"color: #DCDCAA\">Split<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;.&quot;<\/span><span style=\"color: #9CDCFE\">c<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">If<\/span><span style=\"color: #D4D4D4\"> parts.<\/span><span style=\"color: #9CDCFE\">Length<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #B5CEA8\">2<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #C586C0\">Then<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                <\/span><span style=\"color: #9CDCFE\">schema<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #DCDCAA\">parts<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #B5CEA8\">0<\/span><span style=\"color: #D4D4D4\">).<\/span><span style=\"color: #DCDCAA\">Trim<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;&#91;&quot;<\/span><span style=\"color: #D4D4D4\">c, <\/span><span style=\"color: #CE9178\">&quot;&#93;&quot;<\/span><span style=\"color: #9CDCFE\">c<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                <\/span><span style=\"color: #9CDCFE\">name<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #DCDCAA\">parts<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #B5CEA8\">1<\/span><span style=\"color: #D4D4D4\">).<\/span><span style=\"color: #DCDCAA\">Trim<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;&#91;&quot;<\/span><span style=\"color: #D4D4D4\">c, <\/span><span style=\"color: #CE9178\">&quot;&#93;&quot;<\/span><span style=\"color: #9CDCFE\">c<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">End If<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">Else<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #9CDCFE\">name<\/span><span style=\"color: #D4D4D4\"> = tableName.<\/span><span style=\"color: #DCDCAA\">Trim<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;&#91;&quot;<\/span><span style=\"color: #D4D4D4\">c, <\/span><span style=\"color: #CE9178\">&quot;&#93;&quot;<\/span><span style=\"color: #9CDCFE\">c<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #C586C0\">End If<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> cmdText <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">String<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #CE9178\">&quot;SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES &quot;<\/span><span style=\"color: #D4D4D4\"> +<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">                                <\/span><span style=\"color: #CE9178\">&quot; WHERE TABLE_SCHEMA = @schema AND TABLE_NAME = @name&quot;<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        Using cmd As<\/span><span style=\"color: #569CD6\"> New <\/span><span style=\"color: #DCDCAA\">SqlCommand<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #9CDCFE\">cmdText<\/span><span style=\"color: #D4D4D4\">,<\/span><span style=\"color: #9CDCFE\"> MyConnection<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            cmd.Parameters.<\/span><span style=\"color: #DCDCAA\">AddWithValue<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;@schema&quot;<\/span><span style=\"color: #D4D4D4\">,<\/span><span style=\"color: #9CDCFE\"> schema<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            cmd.Parameters.<\/span><span style=\"color: #DCDCAA\">AddWithValue<\/span><span style=\"color: #D4D4D4\">(<\/span><span style=\"color: #CE9178\">&quot;@name&quot;<\/span><span style=\"color: #D4D4D4\">,<\/span><span style=\"color: #9CDCFE\"> name<\/span><span style=\"color: #D4D4D4\">)<\/span><\/span>\n<span class=\"line\"><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #569CD6\">Dim<\/span><span style=\"color: #9CDCFE\"> count <\/span><span style=\"color: #D4D4D4\">As <\/span><span style=\"color: #4EC9B0\">Integer<\/span><span style=\"color: #D4D4D4\"> = <\/span><span style=\"color: #DCDCAA\">Convert<\/span><span style=\"color: #D4D4D4\">.<\/span><span style=\"color: #DCDCAA\">ToInt32<\/span><span style=\"color: #D4D4D4\">(cmd.<\/span><span style=\"color: #DCDCAA\">ExecuteScalar<\/span><span style=\"color: #D4D4D4\">())<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">            <\/span><span style=\"color: #C586C0\">Return<\/span><span style=\"color: #D4D4D4\"> <\/span><span style=\"color: #9CDCFE\">count<\/span><span style=\"color: #D4D4D4\"> &gt; <\/span><span style=\"color: #B5CEA8\">0<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">        <\/span><span style=\"color: #DCDCAA\">End<\/span><span style=\"color: #D4D4D4\"> Using<\/span><\/span>\n<span class=\"line\"><span style=\"color: #D4D4D4\">    <\/span><span style=\"color: #569CD6\">End Function<\/span><\/span><\/code><\/pre><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Determines whether a table with the specified name exists in the given SQL Server connection.<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":810,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-846","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/comments?post=846"}],"version-history":[{"count":3,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/846\/revisions"}],"predecessor-version":[{"id":849,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/846\/revisions\/849"}],"up":[{"embeddable":true,"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/pages\/810"}],"wp:attachment":[{"href":"https:\/\/www.silverice.it\/IpercubeTechWP1\/wp-json\/wp\/v2\/media?parent=846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}