{"id":478659,"date":"2023-08-09T09:36:38","date_gmt":"2023-08-09T09:36:38","guid":{"rendered":""},"modified":"2023-09-05T11:17:18","modified_gmt":"2023-09-05T11:17:18","slug":"recursive-common-table-expressions-ctes","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/in\/wiki\/recursive-common-table-expressions-ctes\/","title":{"rendered":"\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0938\u093e\u092e\u093e\u0928\u094d\u092f \u0924\u093e\u0932\u093f\u0915\u093e \u0905\u092d\u093f\u0935\u094d\u092f\u0915\u094d\u0924\u093f\u092f\u093e\u0901 (\u0938\u0940\u091f\u0940\u0908)"},"content":{"rendered":"<p>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0938\u0902\u0915\u094d\u0937\u093f\u092a\u094d\u0924 \u091c\u093e\u0928\u0915\u093e\u0930\u0940<\/p>\n<p>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u090f\u0915 \u0936\u0915\u094d\u0924\u093f\u0936\u093e\u0932\u0940 SQL \u0938\u0941\u0935\u093f\u0927\u093e \u0939\u0948 \u091c\u094b \u0905\u0938\u094d\u0925\u093e\u092f\u0940 \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u092c\u0928\u093e\u0928\u0947 \u0915\u093e \u090f\u0915 \u0924\u0930\u0940\u0915\u093e \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u0930\u0924\u0940 \u0939\u0948 \u091c\u093f\u0938\u0947 SELECT, INSERT, UPDATE \u092f\u093e DELETE \u0915\u0925\u0928 \u0915\u0947 \u092d\u0940\u0924\u0930 \u0938\u0902\u0926\u0930\u094d\u092d\u093f\u0924 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 CTE \u091c\u091f\u093f\u0932 \u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e\u093f\u0924 \u0915\u094d\u0935\u0947\u0930\u0940 \u0915\u094b \u0938\u0915\u094d\u0937\u092e \u0915\u0930\u0924\u0947 \u0939\u0948\u0902, \u0938\u0902\u0917\u0920\u0928\u093e\u0924\u094d\u092e\u0915 \u091a\u093e\u0930\u094d\u091f, \u092b\u093c\u094b\u0932\u094d\u0921\u0930 \u0938\u0902\u0930\u091a\u0928\u093e \u092f\u093e \u092a\u093e\u0930\u093f\u0935\u093e\u0930\u093f\u0915 \u0935\u0943\u0915\u094d\u0937 \u091c\u0948\u0938\u0947 \u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e\u093f\u0924 \u0921\u0947\u091f\u093e \u0915\u094b \u0915\u094d\u0935\u0947\u0930\u0940 \u0915\u0930\u0928\u0947 \u0915\u0940 \u092a\u094d\u0930\u0915\u094d\u0930\u093f\u092f\u093e \u0915\u094b \u0938\u0930\u0932 \u092c\u0928\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0902\u0938 (\u0938\u0940\u091f\u0940\u0908) \u0915\u0940 \u0909\u0924\u094d\u092a\u0924\u094d\u0924\u093f \u0915\u093e \u0907\u0924\u093f\u0939\u093e\u0938 \u0914\u0930 \u0907\u0938\u0915\u093e \u092a\u0939\u0932\u093e \u0909\u0932\u094d\u0932\u0947\u0916<\/h2>\n<p>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 CTE \u0915\u094b SQL:1999 \u092e\u093e\u0928\u0915 \u0915\u0947 \u092d\u093e\u0917 \u0915\u0947 \u0930\u0942\u092a \u092e\u0947\u0902 \u092a\u0947\u0936 \u0915\u093f\u092f\u093e \u0917\u092f\u093e \u0925\u093e \u0914\u0930 PostgreSQL, Microsoft SQL Server \u0914\u0930 Oracle \u0938\u0939\u093f\u0924 \u092a\u094d\u0930\u092e\u0941\u0916 \u0921\u0947\u091f\u093e\u092c\u0947\u0938 \u0938\u093f\u0938\u094d\u091f\u092e \u0926\u094d\u0935\u093e\u0930\u093e \u0935\u094d\u092f\u093e\u092a\u0915 \u0930\u0942\u092a \u0938\u0947 \u0938\u092e\u0930\u094d\u0925\u093f\u0924 \u0915\u093f\u092f\u093e \u0917\u092f\u093e\u0964 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 CTE \u0915\u0940 \u0936\u0941\u0930\u0942\u0906\u0924 \u0928\u0947 \u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e\u093f\u0924 \u0921\u0947\u091f\u093e \u0915\u0947 \u0938\u093e\u0925 \u0915\u093e\u092e \u0915\u0930\u0928\u0947 \u0915\u0940 \u0915\u094d\u0937\u092e\u0924\u093e \u092e\u0947\u0902 \u090f\u0915 \u092e\u0939\u0924\u094d\u0935\u092a\u0942\u0930\u094d\u0923 \u092a\u094d\u0930\u0917\u0924\u093f \u0915\u094b \u091a\u093f\u0939\u094d\u0928\u093f\u0924 \u0915\u093f\u092f\u093e \u0914\u0930 \u0905\u0927\u093f\u0915 \u0918\u094b\u0937\u0923\u093e\u0924\u094d\u092e\u0915 \u0914\u0930 \u092a\u0920\u0928\u0940\u092f \u0938\u093f\u0902\u091f\u0948\u0915\u094d\u0938 \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u0930\u0915\u0947 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u094d\u0935\u0947\u0930\u0940\u091c\u093c \u0915\u094b \u0928\u093f\u0937\u094d\u092a\u093e\u0926\u093f\u0924 \u0915\u0930\u0928\u0947 \u0915\u093e \u090f\u0915 \u0924\u0930\u0940\u0915\u093e \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u093f\u092f\u093e\u0964<\/p>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u0915\u0947 \u092c\u093e\u0930\u0947 \u092e\u0947\u0902 \u0935\u093f\u0938\u094d\u0924\u0943\u0924 \u091c\u093e\u0928\u0915\u093e\u0930\u0940\u0964 \u0935\u093f\u0937\u092f \u0915\u093e \u0935\u093f\u0938\u094d\u0924\u093e\u0930 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE)<\/h2>\n<p>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 CTE \u0915\u094b WITH \u0915\u094d\u0932\u0949\u091c \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u0930\u0915\u0947 \u092a\u0930\u093f\u092d\u093e\u0937\u093f\u0924 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948, \u0909\u0938\u0915\u0947 \u092c\u093e\u0926 \u090f\u0915 SELECT \u0938\u094d\u091f\u0947\u091f\u092e\u0947\u0902\u091f \u0939\u094b\u0924\u093e \u0939\u0948 \u091c\u094b \u0916\u0941\u0926 \u0915\u094b \u0938\u0902\u0926\u0930\u094d\u092d\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 CTE \u092e\u0947\u0902 \u0926\u094b \u092d\u093e\u0917 \u0939\u094b\u0924\u0947 \u0939\u0948\u0902:<\/p>\n<ol>\n<li><strong>\u090f\u0902\u0915\u0930 \u0938\u0926\u0938\u094d\u092f:<\/strong> \u090f\u0915 \u0906\u0927\u093e\u0930\u092d\u0942\u0924 \u0915\u094d\u0935\u0947\u0930\u0940 \u091c\u094b \u0906\u0927\u093e\u0930 \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u092c\u0928\u093e\u0924\u0940 \u0939\u0948\u0964<\/li>\n<li><strong>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0938\u0926\u0938\u094d\u092f:<\/strong> \u090f\u0915 \u0915\u094d\u0935\u0947\u0930\u0940 \u091c\u094b \u0938\u094d\u0935\u092f\u0902 CTE \u0915\u094b \u0938\u0902\u0926\u0930\u094d\u092d\u093f\u0924 \u0915\u0930\u0924\u0940 \u0939\u0948, \u0905\u0924\u093f\u0930\u093f\u0915\u094d\u0924 \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u093e\u0901 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0915\u0930\u0924\u0940 \u0939\u0948 \u0914\u0930 \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u0915\u093e \u0935\u093f\u0938\u094d\u0924\u093e\u0930 \u0915\u0930\u0924\u0940 \u0939\u0948\u0964<\/li>\n<\/ol>\n<p>\u092f\u0939 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTE \u0915\u094b \u0938\u094d\u0935\u092f\u0902 \u092a\u0930 \u092a\u0941\u0928\u0930\u093e\u0935\u0943\u0924\u093f \u0915\u0930\u0928\u0947 \u0915\u0940 \u0905\u0928\u0941\u092e\u0924\u093f \u0926\u0947\u0924\u093e \u0939\u0948, \u0924\u0925\u093e \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u0915\u094b \u0932\u0942\u092a-\u091c\u0948\u0938\u0947 \u0924\u0930\u0940\u0915\u0947 \u0938\u0947 \u0935\u093f\u0938\u094d\u0924\u093e\u0930\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964<\/p>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u0915\u0940 \u0906\u0902\u0924\u0930\u093f\u0915 \u0938\u0902\u0930\u091a\u0928\u093e\u0964 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u0915\u0948\u0938\u0947 \u0915\u093e\u092e \u0915\u0930\u0924\u093e \u0939\u0948<\/h2>\n<p>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTE \u0915\u0940 \u0906\u0902\u0924\u0930\u093f\u0915 \u0938\u0902\u0930\u091a\u0928\u093e \u0915\u094b \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u091a\u0930\u0923\u094b\u0902 \u092e\u0947\u0902 \u0935\u093f\u092d\u093e\u091c\u093f\u0924 \u0915\u093f\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948:<\/p>\n<ol>\n<li><strong>\u0906\u0930\u0902\u092d\u0940\u0915\u0930\u0923:<\/strong> \u092a\u094d\u0930\u093e\u0930\u0902\u092d\u093f\u0915 \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u092c\u0928\u093e\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u090f\u0902\u0915\u0930 \u0938\u0926\u0938\u094d\u092f \u0915\u094b \u0928\u093f\u0937\u094d\u092a\u093e\u0926\u093f\u0924 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948\u0964<\/li>\n<li><strong>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0928:<\/strong> \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0938\u0926\u0938\u094d\u092f \u0915\u094b CTE \u0915\u0947 \u0935\u0930\u094d\u0924\u092e\u093e\u0928 \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u0915\u093e \u0938\u0902\u0926\u0930\u094d\u092d \u0926\u0947\u0924\u0947 \u0939\u0941\u090f \u092c\u093e\u0930-\u092c\u093e\u0930 \u0928\u093f\u0937\u094d\u092a\u093e\u0926\u093f\u0924 \u0915\u093f\u092f\u093e \u091c\u093e\u0924\u093e \u0939\u0948, \u091c\u092c \u0924\u0915 \u0915\u093f \u0915\u094b\u0908 \u0928\u0908 \u092a\u0902\u0915\u094d\u0924\u093f \u0928\u0939\u0940\u0902 \u091c\u094b\u0921\u093c\u0940 \u091c\u093e\u0924\u0940\u0964<\/li>\n<li><strong>\u0938\u092e\u093e\u092a\u094d\u0924\u093f:<\/strong> \u091c\u092c \u0915\u094b\u0908 \u0905\u0924\u093f\u0930\u093f\u0915\u094d\u0924 \u092a\u0902\u0915\u094d\u0924\u093f \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0928\u0939\u0940\u0902 \u0939\u094b\u0924\u0940 \u0924\u094b \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0928 \u0930\u0941\u0915 \u091c\u093e\u0924\u093e \u0939\u0948\u0964<\/li>\n<\/ol>\n<p>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTE \u0915\u0947 \u0905\u0902\u0924\u093f\u092e \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u092e\u0947\u0902 \u0906\u0930\u0902\u092d\u0940\u0915\u0930\u0923 \u0914\u0930 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u091a\u0930\u0923\u094b\u0902 \u0915\u0947 \u0926\u094c\u0930\u093e\u0928 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0938\u092d\u0940 \u092a\u0902\u0915\u094d\u0924\u093f\u092f\u094b\u0902 \u0915\u093e \u0938\u0902\u092f\u094b\u091c\u0928 \u0936\u093e\u092e\u093f\u0932 \u0939\u094b\u0924\u093e \u0939\u0948\u0964<\/p>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (\u0938\u0940\u091f\u0940\u0908) \u0915\u0940 \u092a\u094d\u0930\u092e\u0941\u0916 \u0935\u093f\u0936\u0947\u0937\u0924\u093e\u0913\u0902 \u0915\u093e \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923<\/h2>\n<ul>\n<li><strong>\u092a\u0920\u0928\u0940\u092f\u0924\u093e:<\/strong> \u091c\u091f\u093f\u0932 \u092a\u094d\u0930\u0936\u094d\u0928\u094b\u0902 \u0915\u094b \u0938\u092e\u093e\u0939\u093f\u0924 \u0915\u0930\u0915\u0947, \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs \u0915\u094b\u0921 \u0915\u0940 \u092a\u0920\u0928\u0940\u092f\u0924\u093e \u092e\u0947\u0902 \u0938\u0941\u0927\u093e\u0930 \u0915\u0930\u0924\u0947 \u0939\u0948\u0902\u0964<\/li>\n<li><strong>\u0930\u0916-\u0930\u0916\u093e\u0935:<\/strong> \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs \u0915\u094b\u0921 \u0938\u0902\u0936\u094b\u0927\u0928 \u0915\u094b \u0906\u0938\u093e\u0928 \u092c\u0928\u093e\u0924\u0947 \u0939\u0948\u0902\u0964<\/li>\n<li><strong>\u0932\u091a\u0940\u0932\u093e\u092a\u0928:<\/strong> \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs \u0905\u0938\u094d\u0925\u093e\u092f\u0940 \u0924\u093e\u0932\u093f\u0915\u093e\u0913\u0902 \u092f\u093e \u0915\u0930\u094d\u0938\u0930 \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u093f\u090f \u092c\u093f\u0928\u093e \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0915\u094d\u0935\u0947\u0930\u0940\u091c\u093c \u0928\u093f\u0937\u094d\u092a\u093e\u0926\u093f\u0924 \u0915\u0930\u0928\u0947 \u0915\u093e \u090f\u0915 \u0938\u0902\u0930\u091a\u093f\u0924 \u0924\u0930\u0940\u0915\u093e \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u0930\u0924\u0947 \u0939\u0948\u0902\u0964<\/li>\n<\/ul>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u0915\u0947 \u0915\u094c\u0928-\u0915\u094c\u0928 \u0938\u0947 \u092a\u094d\u0930\u0915\u093e\u0930 \u092e\u094c\u091c\u0942\u0926 \u0939\u0948\u0902\u0964 \u0932\u093f\u0916\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u091f\u0947\u092c\u0932 \u0914\u0930 \u0932\u093f\u0938\u094d\u091f \u0915\u093e \u0907\u0938\u094d\u0924\u0947\u092e\u093e\u0932 \u0915\u0930\u0947\u0902<\/h2>\n<h3>\u090f\u0902\u0915\u0930 \u0938\u0926\u0938\u094d\u092f<\/h3>\n<ul>\n<li><strong>\u0917\u0948\u0930 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0936\u092c\u094d\u0926:<\/strong> \u092e\u0942\u0932 SELECT \u0915\u0925\u0928 \u091c\u094b CTE \u0906\u0930\u0902\u092d \u0915\u0930\u0924\u093e \u0939\u0948.<\/li>\n<li><strong>\u092f\u0942\u0928\u093f\u092f\u0928 \u092f\u093e \u092f\u0942\u0928\u093f\u092f\u0928 \u0911\u0932:<\/strong> \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0914\u0930 \u0917\u0948\u0930-\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u092a\u0926 \u0915\u0947 \u092a\u0930\u093f\u0923\u093e\u092e\u094b\u0902 \u0915\u094b \u0938\u0902\u092f\u094b\u091c\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964<\/li>\n<\/ul>\n<h3>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0938\u0926\u0938\u094d\u092f<\/h3>\n<ul>\n<li><strong>\u0938\u094d\u0935-\u0938\u0902\u0926\u0930\u094d\u092d:<\/strong> \u092a\u0930\u093f\u0923\u093e\u092e \u0938\u0947\u091f \u0915\u093e \u0935\u093f\u0938\u094d\u0924\u093e\u0930 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f CTE \u0938\u094d\u0935\u092f\u0902 \u0915\u094b \u0938\u0902\u0926\u0930\u094d\u092d\u093f\u0924 \u0915\u0930\u0924\u093e \u0939\u0948\u0964<\/li>\n<\/ul>\n<h3>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e \u0938\u092e\u0930\u094d\u0925\u093f\u0924<\/h3>\n<ul>\n<li><strong>\u0935\u0943\u0915\u094d\u0937 \u091f\u094d\u0930\u0948\u0935\u0930\u094d\u0938\u0932:<\/strong> \u092a\u094d\u0930\u0940-\u0911\u0930\u094d\u0921\u0930, \u092a\u094b\u0938\u094d\u091f-\u0911\u0930\u094d\u0921\u0930, \u0906\u0926\u093f\u0964<\/li>\n<li><strong>\u0917\u094d\u0930\u093e\u092b \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e:<\/strong> \u0917\u0939\u0930\u093e\u0908-\u092a\u0939\u0932\u0947 \u0916\u094b\u091c, \u091a\u094c\u0921\u093c\u093e\u0908-\u092a\u0939\u0932\u0947 \u0916\u094b\u091c, \u0906\u0926\u093f\u0964<\/li>\n<\/ul>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (\u0938\u0940\u091f\u0940\u0908) \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0924\u0930\u0940\u0915\u0947, \u0938\u092e\u0938\u094d\u092f\u093e\u090f\u0901 \u0914\u0930 \u0909\u092a\u092f\u094b\u0917 \u0938\u0947 \u0938\u0902\u092c\u0902\u0927\u093f\u0924 \u0909\u0928\u0915\u0947 \u0938\u092e\u093e\u0927\u093e\u0928<\/h2>\n<h3>\u092a\u094d\u0930\u092f\u094b\u0917<\/h3>\n<ul>\n<li><strong>\u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e\u093f\u0924 \u0921\u0947\u091f\u093e \u0915\u094d\u0935\u0947\u0930\u0940\u091c\u093c:<\/strong> \u0935\u0943\u0915\u094d\u0937 \u091c\u0948\u0938\u0940 \u0938\u0902\u0930\u091a\u0928\u093e\u0913\u0902 \u092a\u0930 \u0928\u0947\u0935\u093f\u0917\u0947\u091f \u0915\u0930\u0928\u093e\u0964<\/li>\n<li><strong>\u092a\u0925 \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923:<\/strong> \u0917\u094d\u0930\u093e\u092b\u093c \u0915\u0947 \u092d\u0940\u0924\u0930 \u092a\u0925 \u0916\u094b\u091c\u0928\u093e.<\/li>\n<li><strong>\u0921\u0947\u091f\u093e \u092a\u0930\u093f\u0935\u0930\u094d\u0924\u0928:<\/strong> \u091c\u091f\u093f\u0932 \u0921\u0947\u091f\u093e \u0930\u0942\u092a\u093e\u0902\u0924\u0930\u0923 \u0914\u0930 \u0939\u0947\u0930\u092b\u0947\u0930\u0964<\/li>\n<\/ul>\n<h3>\u0938\u092e\u0938\u094d\u092f\u093e<\/h3>\n<ul>\n<li><strong>\u0905\u0928\u0902\u0924 \u0932\u0942\u092a:<\/strong> \u092f\u0926\u093f \u0915\u094b\u0908 \u0938\u092e\u093e\u092a\u094d\u0924\u093f \u0938\u094d\u0925\u093f\u0924\u093f \u0928\u0939\u0940\u0902 \u0939\u0948, \u0924\u094b \u0915\u094d\u0935\u0947\u0930\u0940 \u0905\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0915\u093e\u0932 \u0924\u0915 \u0932\u0942\u092a \u0915\u0930 \u0938\u0915\u0924\u0940 \u0939\u0948\u0964<\/li>\n<li><strong>\u0928\u093f\u0937\u094d\u092a\u093e\u0926\u0928 \u092e\u0941\u0926\u094d\u0926\u0947:<\/strong> \u0905\u0915\u0941\u0936\u0932 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0928 \u0938\u0947 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u0938\u0902\u092c\u0902\u0927\u0940 \u0938\u092e\u0938\u094d\u092f\u093e\u090f\u0902 \u0909\u0924\u094d\u092a\u0928\u094d\u0928 \u0939\u094b \u0938\u0915\u0924\u0940 \u0939\u0948\u0902\u0964<\/li>\n<\/ul>\n<h3>\u0938\u092e\u093e\u0927\u093e\u0928<\/h3>\n<ul>\n<li><strong>\u0938\u092e\u093e\u092a\u094d\u0924\u093f \u091c\u093e\u0902\u091a:<\/strong> \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0928 \u0938\u092e\u093e\u092a\u094d\u0924\u093f \u0938\u0941\u0928\u093f\u0936\u094d\u091a\u093f\u0924 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0909\u091a\u093f\u0924 \u0936\u0930\u094d\u0924\u094b\u0902 \u0915\u094b \u0932\u093e\u0917\u0942 \u0915\u0930\u0947\u0902\u0964<\/li>\n<li><strong>\u0905\u0928\u0941\u0915\u0942\u0932\u0928:<\/strong> \u0905\u0928\u0941\u0915\u094d\u0930\u092e\u0923 \u0914\u0930 \u0915\u094d\u0935\u0947\u0930\u0940 \u0905\u0928\u0941\u0915\u0942\u0932\u0928 \u0924\u0915\u0928\u0940\u0915\u0947\u0902 \u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928 \u0915\u094b \u092c\u0922\u093c\u093e \u0938\u0915\u0924\u0940 \u0939\u0948\u0902\u0964<\/li>\n<\/ul>\n<h2>\u0924\u093e\u0932\u093f\u0915\u093e\u0913\u0902 \u0914\u0930 \u0938\u0942\u091a\u093f\u092f\u094b\u0902 \u0915\u0947 \u0930\u0942\u092a \u092e\u0947\u0902 \u0938\u092e\u093e\u0928 \u0936\u092c\u094d\u0926\u094b\u0902 \u0915\u0947 \u0938\u093e\u0925 \u092e\u0941\u0916\u094d\u092f \u0935\u093f\u0936\u0947\u0937\u0924\u093e\u090f\u0902 \u0914\u0930 \u0905\u0928\u094d\u092f \u0924\u0941\u0932\u0928\u093e\u090f\u0901<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u0935\u093f\u0936\u0947\u0937\u0924\u093e<\/th>\n<th>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs<\/th>\n<th>\u0905\u0938\u094d\u0925\u093e\u092f\u0940 \u0924\u093e\u0932\u093f\u0915\u093e\u090f\u0901<\/th>\n<th>\u0915\u0930\u094d\u0938\u0930<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0938\u093f\u0902\u091f\u0947\u0915\u094d\u0938 \u091c\u091f\u093f\u0932\u0924\u093e<\/td>\n<td>\u092e\u0927\u094d\u092f\u092e<\/td>\n<td>\u0909\u091a\u094d\u091a<\/td>\n<td>\u0909\u091a\u094d\u091a<\/td>\n<\/tr>\n<tr>\n<td>\u092a\u094d\u0930\u0926\u0930\u094d\u0936\u0928<\/td>\n<td>\u0905\u091a\u094d\u091b\u093e<\/td>\n<td>\u091a\u0930<\/td>\n<td>\u0905\u0915\u094d\u0938\u0930 \u0927\u0940\u092e\u093e<\/td>\n<\/tr>\n<tr>\n<td>\u092a\u0920\u0928\u0940\u092f\u0924\u093e<\/td>\n<td>\u0909\u091a\u094d\u091a<\/td>\n<td>\u092e\u0927\u094d\u092f\u092e<\/td>\n<td>\u0915\u092e<\/td>\n<\/tr>\n<tr>\n<td>\u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e \u092e\u0947\u0902 \u092a\u094d\u0930\u092f\u094b\u091c\u094d\u092f\u0924\u093e<\/td>\n<td>\u0909\u0924\u094d\u0915\u0943\u0937\u094d\u091f<\/td>\n<td>\u0905\u091a\u094d\u091b\u093e<\/td>\n<td>\u0917\u094b\u0930\u093e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0902\u0938 (\u0938\u0940\u091f\u0940\u0908) \u0938\u0947 \u0938\u0902\u092c\u0902\u0927\u093f\u0924 \u092d\u0935\u093f\u0937\u094d\u092f \u0915\u0947 \u092a\u0930\u093f\u092a\u094d\u0930\u0947\u0915\u094d\u0937\u094d\u092f \u0914\u0930 \u092a\u094d\u0930\u094c\u0926\u094d\u092f\u094b\u0917\u093f\u0915\u093f\u092f\u093e\u0902<\/h2>\n<p>\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTE \u092e\u0947\u0902 \u092d\u0935\u093f\u0937\u094d\u092f \u0915\u0940 \u092a\u094d\u0930\u0917\u0924\u093f \u092e\u0947\u0902 \u0928\u093f\u092e\u094d\u0928\u0932\u093f\u0916\u093f\u0924 \u0936\u093e\u092e\u093f\u0932 \u0939\u094b \u0938\u0915\u0924\u0947 \u0939\u0948\u0902:<\/p>\n<ul>\n<li><strong>\u0905\u0928\u0941\u0915\u0942\u0932\u0928 \u0924\u0915\u0928\u0940\u0915\u0947\u0902:<\/strong> \u0915\u0941\u0936\u0932 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0928 \u0915\u0947 \u0932\u093f\u090f \u092c\u0947\u0939\u0924\u0930 \u090f\u0932\u094d\u0917\u094b\u0930\u093f\u0926\u092e.<\/li>\n<li><strong>\u092c\u093f\u0917 \u0921\u0947\u091f\u093e \u091f\u0942\u0932\u094d\u0938 \u0915\u0947 \u0938\u093e\u0925 \u090f\u0915\u0940\u0915\u0930\u0923:<\/strong> \u0935\u093f\u0924\u0930\u093f\u0924 \u0921\u0947\u091f\u093e \u092a\u094d\u0930\u0923\u093e\u0932\u093f\u092f\u094b\u0902 \u092a\u0930 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0915\u094d\u0935\u0947\u0930\u0940\u091c\u093c \u0915\u094b \u0938\u0915\u094d\u0937\u092e \u0915\u0930\u0928\u093e\u0964<\/li>\n<li><strong>\u0909\u0928\u094d\u0928\u0924 \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u093f\u0915\u0940:<\/strong> \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs \u0915\u0947 \u092d\u0940\u0924\u0930 \u0938\u093e\u0902\u0916\u094d\u092f\u093f\u0915\u0940\u092f \u0914\u0930 \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923\u093e\u0924\u094d\u092e\u0915 \u0915\u093e\u0930\u094d\u092f\u094b\u0902 \u092e\u0947\u0902 \u0935\u0943\u0926\u094d\u0927\u093f\u0964<\/li>\n<\/ul>\n<h2>\u092a\u094d\u0930\u0949\u0915\u094d\u0938\u0940 \u0938\u0930\u094d\u0935\u0930 \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u0948\u0938\u0947 \u0915\u093f\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948 \u092f\u093e \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 (CTE) \u0915\u0947 \u0938\u093e\u0925 \u0915\u0948\u0938\u0947 \u0938\u0902\u092c\u0926\u094d\u0927 \u0915\u093f\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948<\/h2>\n<p>OneProxy \u091c\u0948\u0938\u0947 \u092a\u094d\u0930\u0949\u0915\u094d\u0938\u0940 \u0938\u0930\u094d\u0935\u0930 \u092a\u094d\u0930\u0926\u093e\u0924\u093e \u0915\u0947 \u0938\u0902\u0926\u0930\u094d\u092d \u092e\u0947\u0902, \u0928\u0947\u091f\u0935\u0930\u094d\u0915 \u0938\u0902\u0930\u091a\u0928\u093e\u0913\u0902, \u0930\u0942\u091f\u093f\u0902\u0917 \u092a\u0925\u094b\u0902 \u0914\u0930 \u0909\u092a\u092f\u094b\u0917\u0915\u0930\u094d\u0924\u093e \u0915\u0928\u0947\u0915\u094d\u091f\u093f\u0935\u093f\u091f\u0940 \u0938\u0947 \u0938\u0902\u092c\u0902\u0927\u093f\u0924 \u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e\u093f\u0924 \u0921\u0947\u091f\u093e \u0915\u093e \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923 \u0914\u0930 \u0935\u094d\u092f\u0935\u0938\u094d\u0925\u093f\u0924 \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTE \u0915\u093e \u0909\u092a\u092f\u094b\u0917 \u0915\u093f\u092f\u093e \u091c\u093e \u0938\u0915\u0924\u093e \u0939\u0948\u0964 \u0921\u0947\u091f\u093e \u0915\u093e \u0935\u093f\u0936\u094d\u0932\u0947\u0937\u0923 \u0928\u0947\u091f\u0935\u0930\u094d\u0915 \u0935\u094d\u092f\u0935\u0939\u093e\u0930 \u0915\u094b \u0938\u092e\u091d\u0928\u0947, \u0932\u094b\u0921 \u0935\u093f\u0924\u0930\u0923 \u0915\u094b \u092a\u094d\u0930\u092c\u0902\u0927\u093f\u0924 \u0915\u0930\u0928\u0947 \u0914\u0930 \u0938\u0941\u0930\u0915\u094d\u0937\u093e \u0909\u092a\u093e\u092f\u094b\u0902 \u0915\u094b \u092c\u0947\u0939\u0924\u0930 \u092c\u0928\u093e\u0928\u0947 \u092e\u0947\u0902 \u092e\u0926\u0926 \u0915\u0930 \u0938\u0915\u0924\u093e \u0939\u0948\u0964<\/p>\n<h2>\u0938\u092e\u094d\u092c\u0902\u0927\u093f\u0924 \u0932\u093f\u0902\u0915\u094d\u0938<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.postgresql.org\/docs\/current\/queries-with.html\" target=\"_new\" rel=\"noopener nofollow\">\u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs \u092a\u0930 PostgreSQL \u0926\u0938\u094d\u0924\u093e\u0935\u0947\u091c\u093c\u0940\u0915\u0930\u0923<\/a><\/li>\n<li><a href=\"https:\/\/docs.microsoft.com\/en-us\/sql\/t-sql\/queries\/with-common-table-expression-transact-sql\" target=\"_new\" rel=\"noopener nofollow\">\u092e\u093e\u0907\u0915\u094d\u0930\u094b\u0938\u0949\u092b\u094d\u091f SQL \u0938\u0930\u094d\u0935\u0930 \u0930\u093f\u0915\u0930\u094d\u0938\u093f\u0935 CTEs<\/a><\/li>\n<li><a href=\"https:\/\/docs.oracle.com\/en\/database\/oracle\/oracle-database\/19\/sqlrf\/Hierarchical-Queries.html\" target=\"_new\" rel=\"noopener nofollow\">\u0913\u0930\u0947\u0915\u0932 \u0915\u0940 \u092a\u0926\u093e\u0928\u0941\u0915\u094d\u0930\u092e\u093f\u0924 \u0921\u0947\u091f\u093e \u0914\u0930 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 CTEs \u0915\u0947 \u0932\u093f\u090f \u092e\u093e\u0930\u094d\u0917\u0926\u0930\u094d\u0936\u093f\u0915\u093e<\/a><\/li>\n<\/ul>\n<p>\u092f\u0947 \u0932\u093f\u0902\u0915 \u0935\u093f\u092d\u093f\u0928\u094d\u0928 \u0921\u0947\u091f\u093e\u092c\u0947\u0938 \u092a\u094d\u0930\u0923\u093e\u0932\u093f\u092f\u094b\u0902 \u092e\u0947\u0902 \u092a\u0941\u0928\u0930\u093e\u0935\u0930\u094d\u0924\u0940 \u0915\u0949\u092e\u0928 \u091f\u0947\u092c\u0932 \u090f\u0915\u094d\u0938\u092a\u094d\u0930\u0947\u0936\u0928 \u0915\u0947 \u0938\u093e\u0925 \u0915\u093e\u092e \u0915\u0930\u0928\u0947 \u0915\u0947 \u0932\u093f\u090f \u0935\u094d\u092f\u093e\u092a\u0915 \u091c\u093e\u0928\u0915\u093e\u0930\u0940, \u0909\u0926\u093e\u0939\u0930\u0923 \u0914\u0930 \u0938\u0930\u094d\u0935\u094b\u0924\u094d\u0924\u092e \u0905\u092d\u094d\u092f\u093e\u0938 \u092a\u094d\u0930\u0926\u093e\u0928 \u0915\u0930\u0924\u0947 \u0939\u0948\u0902\u0964<\/p>","protected":false},"featured_media":469335,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478659","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Recursive Common Table Expressions (CTEs)<\/mark>","faq_items":[{"question":"What are Recursive Common Table Expressions (CTEs)?","answer":"<p>Recursive Common Table Expressions (CTEs) are temporary result sets in SQL that allow for complex hierarchical queries. They consist of two main parts: an anchor member that forms the base result set, and a recursive member that extends the result set by referring to the CTE itself.<\/p>"},{"question":"How were Recursive Common Table Expressions (CTEs) introduced?","answer":"<p>Recursive CTEs were introduced as part of the SQL:1999 standard and have since become widely supported by major database systems like PostgreSQL, Microsoft SQL Server, and Oracle.<\/p>"},{"question":"What is the internal structure of Recursive Common Table Expressions (CTEs)?","answer":"<p>The internal structure of a recursive CTE includes an initialization step where the anchor member is executed, followed by a recursion step where the recursive member repeatedly refers to the CTE's current result set, and a termination step when no additional rows are produced.<\/p>"},{"question":"What are the key features of Recursive Common Table Expressions (CTEs)?","answer":"<p>The key features of Recursive CTEs include enhanced code readability, maintainability, and flexibility in performing recursive queries without using temporary tables or cursors.<\/p>"},{"question":"Are there different types of Recursive Common Table Expressions (CTEs)?","answer":"<p>Yes, Recursive CTEs are composed of anchor members, which can be non-recursive terms or UNION statements, and recursive members that self-reference the CTE. They support various recursive algorithms like tree traversals and graph algorithms.<\/p>"},{"question":"What are some common ways to use Recursive CTEs, and what problems might be encountered?","answer":"<p>Recursive CTEs are commonly used for hierarchical data queries, path analysis, and data transformation. Problems that may arise include infinite loops and performance issues, which can be addressed with proper termination checks and query optimization.<\/p>"},{"question":"How do Recursive Common Table Expressions (CTEs) compare to similar terms like Temporary Tables and Cursors?","answer":"<p>Recursive CTEs offer better readability, often better performance, and excellent usability in hierarchies compared to Temporary Tables and Cursors.<\/p>"},{"question":"What are the future perspectives related to Recursive Common Table Expressions (CTEs)?","answer":"<p>Future advancements in recursive CTEs may include optimization techniques, integration with big data tools, and enhancements in statistical and analytical functions.<\/p>"},{"question":"How can Recursive Common Table Expressions (CTEs) be associated with proxy servers like OneProxy?","answer":"<p>Recursive CTEs can be used with proxy servers like OneProxy to analyze and organize hierarchical data related to network structures, routing paths, and user connectivity. This analysis can aid in understanding network behavior and improving security measures.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/in\/wp-json\/wp\/v2\/wiki\/478659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/in\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/in\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/in\/wp-json\/wp\/v2\/wiki\/478659\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/in\/wp-json\/wp\/v2\/media\/469335"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/in\/wp-json\/wp\/v2\/media?parent=478659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}