{"id":20700,"date":"2022-11-10T14:30:47","date_gmt":"2022-11-10T09:00:47","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-do-i-join-on-multiple-columns-in-sql-server-and-include-columns-in-one-table-that-arent-present-in-other-tables\/"},"modified":"2022-11-10T14:30:47","modified_gmt":"2022-11-10T09:00:47","slug":"solved-how-do-i-join-on-multiple-columns-in-sql-server-and-include-columns-in-one-table-that-arent-present-in-other-tables","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-do-i-join-on-multiple-columns-in-sql-server-and-include-columns-in-one-table-that-arent-present-in-other-tables\/","title":{"rendered":"[Solved] How do I join on multiple columns in SQL Server and include columns in one table that aren&#8217;t present in other tables?"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-57928924\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"57928924\" data-parentid=\"57928259\" data-score=\"2\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<pre><code>declare @t1 table (\ncol_a varchar(5) null\n,col_b varchar(5) null\n,col_c varchar(5) null\n,col_d varchar(5) null\n)\n\ndeclare @t2 table (\ncol_a varchar(5) null\n,col_b varchar(5) null\n,col_e varchar(5) null\n)\n\n\ninsert into @t1 values \n('Cat 1','Bla a','C-1','D-1')\n,('Cat 1','Bla a','C-2','D-2')\n,('Cat 1','Bla a','C-3','D-3')\n,('Cat 2','Bla b','C-4','D-4')\n,('Cat 2','Bla b','C-5','D-5')\n\ninsert into @t2 values \n('Cat 1'   , 'Bla a' , 'E-1'   )\n,('Cat 2'   , 'Bla b' , 'E-2  ' )\n,('Cat 2'   , 'Bla b' , 'E-3'   )\n,('Cat 2'   , 'Bla b' , 'E-4')\n\n\n\nselect isnull(a.col_a,b.col_a) col_a, isnull(a.col_b,b.col_b) col_b, a.col_c,a.col_d,b.col_e\nfrom (\n    select *,row_number() over (partition by col_a order by col_c) rown\n    from @t1\n) a\nfull outer join (\n    select *,row_number() over (partition by col_a order by col_e) rown\n    from @t2\n) b\n    on a.col_a = b.col_a\n    and a.col_b = b.col_b\n    and a.rown = b.rown\norder by isnull(a.col_a,b.col_a),isnull(a.rown,b.rown)\n<\/code><\/pre>\n<p>Using row_number as part of a full join is what allows for the null values to be created.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">3<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How do I join on multiple columns in SQL Server and include columns in one table that aren&#8217;t present in other tables? <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] declare @t1 table ( col_a varchar(5) null ,col_b varchar(5) null ,col_c varchar(5) null ,col_d varchar(5) null ) declare @t2 table ( col_a varchar(5) null ,col_b varchar(5) null ,col_e varchar(5) null ) insert into @t1 values (&#8216;Cat 1&#8242;,&#8217;Bla a&#8217;,&#8217;C-1&#8242;,&#8217;D-1&#8242;) ,(&#8216;Cat 1&#8242;,&#8217;Bla a&#8217;,&#8217;C-2&#8242;,&#8217;D-2&#8242;) ,(&#8216;Cat 1&#8242;,&#8217;Bla a&#8217;,&#8217;C-3&#8242;,&#8217;D-3&#8242;) ,(&#8216;Cat 2&#8242;,&#8217;Bla b&#8217;,&#8217;C-4&#8242;,&#8217;D-4&#8242;) ,(&#8216;Cat 2&#8242;,&#8217;Bla b&#8217;,&#8217;C-5&#8242;,&#8217;D-5&#8242;) insert into @t2 values &#8230; <a title=\"[Solved] How do I join on multiple columns in SQL Server and include columns in one table that aren&#8217;t present in other tables?\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-do-i-join-on-multiple-columns-in-sql-server-and-include-columns-in-one-table-that-arent-present-in-other-tables\/\" aria-label=\"More on [Solved] How do I join on multiple columns in SQL Server and include columns in one table that aren&#8217;t present in other tables?\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[341,500],"class_list":["post-20700","post","type-post","status-publish","format-standard","hentry","category-solved","tag-sql","tag-sql-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How do I join on multiple columns in SQL Server and include columns in one table that aren&#039;t present in other tables? - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-do-i-join-on-multiple-columns-in-sql-server-and-include-columns-in-one-table-that-arent-present-in-other-tables\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How do I join on multiple columns in SQL Server and include columns in one table that aren&#039;t present in other tables? - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] declare @t1 table ( col_a varchar(5) null ,col_b varchar(5) null ,col_c varchar(5) null ,col_d varchar(5) null ) declare @t2 table ( col_a varchar(5) null ,col_b varchar(5) null ,col_e varchar(5) null ) insert into @t1 values (&#039;Cat 1&#039;,&#039;Bla a&#039;,&#039;C-1&#039;,&#039;D-1&#039;) ,(&#039;Cat 1&#039;,&#039;Bla a&#039;,&#039;C-2&#039;,&#039;D-2&#039;) ,(&#039;Cat 1&#039;,&#039;Bla a&#039;,&#039;C-3&#039;,&#039;D-3&#039;) ,(&#039;Cat 2&#039;,&#039;Bla b&#039;,&#039;C-4&#039;,&#039;D-4&#039;) ,(&#039;Cat 2&#039;,&#039;Bla b&#039;,&#039;C-5&#039;,&#039;D-5&#039;) insert into @t2 values ... 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