{"id":7638,"date":"2025-08-24T16:55:36","date_gmt":"2025-08-24T11:25:36","guid":{"rendered":"https:\/\/www.sapewmhelp.com\/?question=open-sql-vs-native-sql"},"modified":"2025-08-24T16:55:36","modified_gmt":"2025-08-24T11:25:36","slug":"open-sql-vs-native-sql","status":"publish","type":"question","link":"https:\/\/www.sapewmhelp.com\/?question=open-sql-vs-native-sql","title":{"rendered":"Open SQL VS Native SQL"},"content":{"rendered":"<h5>1. <strong>Open SQL<\/strong><\/h5>\n<ul>\n<li><strong>ABAP\u2019s database-independent SQL<\/strong>.<\/li>\n<li>Works on <strong>all supported DBs<\/strong> (HANA, Oracle, MSSQL, DB2, \u2026).<\/li>\n<li>ABAP converts Open SQL statements into the <strong>database-specific SQL<\/strong> automatically.<\/li>\n<li>Ensures <strong>portability<\/strong> \u2192 same ABAP program runs regardless of underlying DB.<\/li>\n<li>Supports <strong>buffering<\/strong> (e.g., table buffers in SAP).<\/li>\n<li>\n<p>Only a <strong>subset of SQL<\/strong> is allowed (the part SAP makes portable).<\/p>\n<\/li>\n<\/ul>\n<p>Example :<\/p>\n<p>DATA: it_mara TYPE TABLE OF mara.<\/p>\n<p>SELECT matnr mtart FROM mara<br \/>\nINTO TABLE it_mara<br \/>\nWHERE mtart = &#8216;FERT&#8217;.<\/p>\n<ul>\n<li>\n<p>This works in <strong>any DB<\/strong> under SAP (Oracle, HANA, DB2, etc.).<\/p>\n<\/li>\n<li>\n<p>Optimized by SAP kernel, can use table buffering.<\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 data-start=\"816\" data-end=\"839\">2. <strong>Native SQL<\/strong><\/h2>\n<ul>\n<li>\n<p><strong>Database-specific SQL<\/strong>.<\/p>\n<\/li>\n<li>\n<p>You write SQL directly for the underlying DBMS.<\/p>\n<\/li>\n<li>\n<p>Executed via <strong>EXEC SQL \u2026 ENDEXEC<\/strong> or <strong>ADBC (ABAP Database Connectivity)<\/strong>.<\/p>\n<\/li>\n<li>\n<p>No automatic portability \u2192 may not work if you change DB.<\/p>\n<\/li>\n<li>\n<p><strong>No table buffering<\/strong> \u2192 always hits the DB.<\/p>\n<\/li>\n<li>\n<p>Useful when:<\/p>\n<ul>\n<li>\n<p>You need features not available in Open SQL (e.g., DB-specific functions, hints).<\/p>\n<\/li>\n<li>\n<p>You want DB-level optimizations.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Example:<\/p>\n<p>&nbsp;<\/p>\n<p>DATA: lv_matnr TYPE mara-matnr.<\/p>\n<p>EXEC SQL.<br \/>\nSELECT MATNR INTO :lv_matnr<br \/>\nFROM MARA<br \/>\nWHERE MTART = &#8216;FERT&#8217;<br \/>\nENDEXEC.<\/p>\n<p>&nbsp;<\/p>\n<p>This will only work if the DB syntax matches your system (e.g., Oracle-specific SQL won\u2019t run on HANA).<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Key Difference Summary:<\/p>\n<p><\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>Feature<\/th>\n<th><strong>Open SQL<\/strong><\/th>\n<th><strong>Native SQL<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Portability<\/strong><\/td>\n<td>DB-independent, portable<\/td>\n<td>DB-dependent, not portable<\/td>\n<\/tr>\n<tr>\n<td><strong>Syntax<\/strong><\/td>\n<td>Subset of SQL, ABAP-friendly<\/td>\n<td>Full DB SQL, DB-specific extensions<\/td>\n<\/tr>\n<tr>\n<td><strong>Buffering<\/strong><\/td>\n<td>Uses SAP buffering (if available)<\/td>\n<td>Bypasses buffering, always DB access<\/td>\n<\/tr>\n<tr>\n<td><strong>Performance<\/strong><\/td>\n<td>Optimized by SAP kernel<\/td>\n<td>Can be optimized manually at DB<\/td>\n<\/tr>\n<tr>\n<td><strong>Use Case<\/strong><\/td>\n<td>Most reports, standard programs<\/td>\n<td>Special DB features, performance tuning, admin tasks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>\u00a0<\/strong><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","question-category":[173],"question_tags":[201,199,373,200,177],"class_list":["post-7638","question","type-question","status-publish","hentry","question-category-cdsviews","question_tags-btp","question_tags-cds","question_tags-open-sql-vs-native-sql","question_tags-rap","question_tags-sap"],"_links":{"self":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/question\/7638","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/question"}],"about":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/types\/question"}],"author":[{"embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7638"}],"wp:attachment":[{"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7638"}],"wp:term":[{"taxonomy":"question-category","embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fquestion-category&post=7638"},{"taxonomy":"question_tags","embeddable":true,"href":"https:\/\/www.sapewmhelp.com\/index.php?rest_route=%2Fwp%2Fv2%2Fquestion_tags&post=7638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}