{"id":6746,"date":"2026-07-12T02:05:28","date_gmt":"2026-07-12T10:05:28","guid":{"rendered":"https:\/\/www.gudusoft.com\/column-level-data-lineage\/"},"modified":"2026-07-12T02:05:28","modified_gmt":"2026-07-12T10:05:28","slug":"column-level-data-lineage","status":"publish","type":"page","link":"https:\/\/www.gudusoft.com\/ko\/%ec%bb%ac%eb%9f%bc-%ec%88%98%ec%a4%80-%eb%8d%b0%ec%9d%b4%ed%84%b0-%ea%b3%84%eb%b3%b4\/","title":{"rendered":"\uceec\ub7fc \uc218\uc900 \ub370\uc774\ud130 \uacc4\ubcf4: \ubb34\uc5c7\uc774\uba70 \ud14c\uc774\ube14 \uc218\uc900\ub9cc\uc73c\ub85c\ub294 \ubd80\uc871\ud55c \uc774\uc720"},"content":{"rendered":"<p><strong>\uceec\ub7fc \uc218\uc900 \ub370\uc774\ud130 \uacc4\ubcf4<\/strong> \ucffc\ub9ac, \ubdf0 \ub610\ub294 \ubcf4\uace0\uc11c\uc758 \ubaa8\ub4e0 \ucd9c\ub825 \uc5f4\uc744 \ud574\ub2f9 \ucffc\ub9ac, \ubdf0 \ub610\ub294 \ubcf4\uace0\uc11c\ub97c \uc0dd\uc131\ud55c \uc815\ud655\ud55c \uc18c\uc2a4 \uc5f4\uc5d0 \ub9e4\ud551\ud558\uba70, \uadf8 \uacfc\uc815\uc5d0\uc11c \uc801\uc6a9\ub41c \ubaa8\ub4e0 \ubcc0\ud658(\ud568\uc218, \ud615\ubcc0\ud658, \uc870\uc778, \uc9d1\uacc4 \ubc0f \ud544\ud130)\ub3c4 \ud3ec\ud568\ud569\ub2c8\ub2e4. \uc5ec\uae30\uc11c \ud14c\uc774\ube14 \uc218\uc900 \uacc4\ubcf4\ub294 &quot;\ud14c\uc774\ube14&quot;\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. <code>\uba85\ub839<\/code> \uc0ac\ub8cc \ud14c\uc774\ube14 <code>\uc218\uc775 \ubcf4\uace0\uc11c<\/code>&quot;, \uceec\ub7fc \uc218\uc900 \uacc4\ubcf4\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.&quot;<code>\uc218\uc775 \ubcf4\uace0\uc11c.\ucd1d\uc561<\/code> ~\uc774\ub2e4 <code>SUM(\uc8fc\ubb38 \uc218\ub7c9)<\/code>\ud544\ud130\ub9c1\ub428 <code>\uc8fc\ubb38 \uc0c1\ud0dc<\/code> \uadf8\ub9ac\uace0 \uadf8\ub8f9\ud654\ub428 <code>\uace0\uac1d \uc9c0\uc5ed<\/code>\uc774\ub294 \uc601\ud5a5 \ubd84\uc11d, \ub514\ubc84\uae45 \ubc0f \uac10\uc0ac \ub2f5\ubcc0\uc774 \uadfc\uc0ac\uce58\uac00 \uc544\ub2cc \uc815\ud655\uc131\uc744 \ud655\ubcf4\ud560 \uc218 \uc788\ub294 \uc138\ubd84\uc131\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc774 \ud398\uc774\uc9c0\uc5d0\uc11c\ub294 \uc6a9\uc5b4\ub97c \uc815\uc758\ud558\uace0, CTE, \uc870\uc778 \ubc0f \uc9d1\uacc4\ub97c \uc0ac\uc6a9\ud558\ub294 \uc2e4\uc81c \ucffc\ub9ac\ub97c \ud1b5\ud574 \ud558\ub098\uc758 \ucd9c\ub825 \uc5f4\uc744 \uc0b4\ud3b4\ubcf4\uace0, \uc774\ub7ec\ud55c \uc815\ubcf4\ub97c \ucd94\ucd9c\ud558\ub294 \ub370 \ud328\ud134 \ub9e4\uce6d\uc774 \uc544\ub2cc \uc2dc\ub9e8\ud2f1 SQL \uad6c\ubb38 \ubd84\uc11d\uc774 \ud544\uc694\ud55c \uc774\uc720\ub97c \uc124\uba85\ud569\ub2c8\ub2e4. \ub370\uc774\ud130 \uacc4\ubcf4\ub77c\ub294 \uac1c\ub150\uc774 \uc0dd\uc18c\ud558\ub2e4\uba74 \uc774 \ud398\uc774\uc9c0\ubd80\ud130 \uc2dc\uc791\ud558\uc138\uc694. <a href=\"https:\/\/www.gudusoft.com\/ko\/%eb%8d%b0%ec%9d%b4%ed%84%b0-%ea%b3%84%eb%b3%b4%eb%9e%80-%eb%ac%b4%ec%97%87%ec%9d%b8%ea%b0%80\/\">\ub370\uc774\ud130 \uacc4\ubcf4\ub780 \ubb34\uc5c7\uc774\uba70 \uc65c \uc911\uc694\ud55c\uac00<\/a>\uadf8\ub7f0 \ub2e4\uc74c \uc5ec\uae30\ub85c \ub3cc\uc544\uc640\uc11c \uc5f4\ubcc4 \uc138\ubd80 \uc815\ubcf4\ub97c \ud655\uc778\ud558\uc138\uc694.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained\" style=\"background-color:#eef7fb;padding-top:24px;padding-bottom:24px\"><div class=\"wp-block-group__inner-container\">\n\n<p><strong>\uc9c1\uc811 SQL\uc5d0\uc11c \ud655\uc778\ud574 \ubcf4\uc138\uc694:<\/strong> \uad81\uae08\ud55c \uc0ac\ud56d\uc744 \uc5ec\uae30\uc5d0 \ubd99\uc5ec\ub123\uc73c\uc138\uc694. <a href=\"https:\/\/sqlflow.gudusoft.com\/?utm_source=gudusoft&amp;utm_medium=website&amp;utm_campaign=column-level-data-lineage\" target=\"_blank\" rel=\"noreferrer noopener\">\ubb34\ub8cc SQLFlow \uacc4\ubcf4 \uc2dc\uac01\ud654 \ub3c4\uad6c<\/a> \ucd9c\ub825 \uc5f4\uc744 \ud074\ub9ad\ud558\uba74 \uc804\uccb4 \uc0c1\uc704 \uacbd\ub85c\uac00 \uac15\uc870 \ud45c\uc2dc\ub429\ub2c8\ub2e4. \ud074\ub77c\uc6b0\ub4dc \ubb34\ub8cc \ud2f0\uc5b4\ub9cc\uc73c\ub85c\ub3c4 \uc774 \uacfc\uc815\uc744 \ub530\ub77c\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">\uceec\ub7fc \uc218\uc900 \ub370\uc774\ud130 \uacc4\ubcf4\uc5d0\ub294 \uc5b4\ub5a4 \uae30\ub85d\uc774 \uc788\ub098\uc694?<\/h2>\n\n\n\n<p>\ubb38\uc7a5\uc774 \uc4f0\uac70\ub098 \ubc18\ud658\ud558\ub294 \ubaa8\ub4e0 \uc5f4\uc5d0 \ub300\ud574 \uc5f4 \uc218\uc900 \uacc4\ubcf4 \uadf8\ub798\ud504\ub294 \ub2e4\uc74c \uc138 \uac00\uc9c0\ub97c \uc800\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<ul><li><strong>\uc6d0\ubcf8 \uc5f4:<\/strong> \ucd9c\ub825\uc73c\ub85c \uc804\ub2ec\ub418\ub294 \ubb3c\ub9ac\uc801 \uc5f4\uc758 \uac12\uc740 CTE, \uc11c\ube0c\ucffc\ub9ac, \ubdf0, \uc784\uc2dc \ud14c\uc774\ube14\uacfc \uac19\uc740 \uc5ec\ub7ec \uc911\uac04 \uacc4\uce35\uc744 \uac70\uccd0 \uacb0\uc815\ub429\ub2c8\ub2e4.<\/li>\n<li><strong>\ubcc0\ud658:<\/strong> \uacbd\ub85c\uc5d0 \uc801\uc6a9\ub41c \uc5f0\uc0b0, \uc608: <code>\ud569\uc9d1\ud569()<\/code>, <code>\uae41\uc2a4()<\/code>, <code>\uc0ac\ub840<\/code> \ud45c\ud604\uc2dd, \ubb38\uc790\uc5f4 \ud568\uc218 \ubc0f \uc9d1\ud569 \uc5f0\uc0b0\uc790 \ub4f1 <code>\ub178\ub3d9 \uc870\ud569<\/code>.<\/li>\n<li><strong>\uad00\uacc4 \uc720\ud615:<\/strong> \uc18c\uc2a4 \uc5f4\uc758 \uac12\uc774 \uc2e4\uc81c\ub85c \ucd9c\ub825\uc5d0 \ubc18\uc601\ub418\ub294\uc9c0(\uc9c1\uc811 \uacc4\ubcf4) \uc544\ub2c8\uba74 \ud544\ud130, \uc870\uc778 \ub610\ub294 \uadf8\ub8f9\ud654\ub97c \ud1b5\ud574 \uacb0\uacfc\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294\uc9c0(\uac04\uc811 \uacc4\ubcf4)\ub97c \uad6c\ubd84\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \ub3c4\uad6c\ub294 \uc774 \ubd80\ubd84\uc744 \uc0dd\ub7b5\ud558\uae30 \ub54c\ubb38\uc5d0 \uc544\ub798\uc5d0\uc11c \uc774 \ucc28\uc774\uc810\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc124\uba85\ud569\ub2c8\ub2e4.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\ud14c\uc774\ube14 \uc218\uc900\uc758 \uacc4\ubcf4 \uc815\ubcf4\ub9cc\uc73c\ub85c\ub294 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc740 \uc774\uc720<\/h2>\n\n\n\n<p>\ud14c\uc774\ube14 \uc218\uc900\uc758 \ub370\uc774\ud130 \uacc4\ubcf4\ub294 \uc0dd\uc131 \ube44\uc6a9\uc774 \uc800\ub834\ud558\uace0 \ucd08\uae30 \ubc29\ud5a5 \uc124\uc815\uc5d0 \ub9e4\uc6b0 \uc720\uc6a9\ud569\ub2c8\ub2e4. \uc5b4\ub5a4 \ud14c\uc774\ube14\uacfc \ubdf0\uac00 \uc5b4\ub5a4 \ub370\uc774\ud130\uc5d0 \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud558\ub294\uc9c0 \ubcf4\uc5ec\uc8fc\ub294 \uc9c0\ub3c4 \uc5ed\ud560\uc744 \ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \ubb38\uc81c\ub294 \ub370\uc774\ud130 \ud300\uc774 \uc2e4\uc81c\ub85c \ub2f5\uc744 \uc5bb\uc5b4\uc57c \ud558\ub294 \uc9c8\ubb38\uc740 \uceec\ub7fc \uc218\uc900\uc758 \uc9c8\ubb38\uc774\ub77c\ub294 \uc810\uc774\uba70, \ud14c\uc774\ube14 \uc218\uc900\uc758 \uc138\ubd84\ud654\ub294 \uc9c0\ub098\uce58\uac8c \uadfc\uc0ac\uce58\ub97c \uc0ac\uc6a9\ud558\uac8c \ub9cc\ub4e0\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\uc9c8\ubb38<\/th><th>\ud45c \uc218\uc900 \ub2f5\ubcc0<\/th><th>\uceec\ub7fc \uc218\uc900 \ub2f5\ubcc0<\/th><\/tr><\/thead><tbody>\n<tr><td>\uc774\ub984\uc744 \ubc14\uafb8\uba74 \uc5b4\ub5a4 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud558\ub098\uc694? <code>\uace0\uac1d \uc774\uba54\uc77c<\/code>?<\/td><td>\uc77d\ub294 \ubaa8\ub4e0 \uac1d\uccb4 <code>\uace0\uac1d<\/code> \u2014 \ud754\ud788 \uc218\uc2ed \uac74\uc758 \uc624\ud0d0\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/td><td>\ucc38\uc870\ud558\ub294 \uacac\ud574, \uc808\ucc28 \ubc0f \ubcf4\uace0\uc11c\ub9cc \ud574\ub2f9\ub429\ub2c8\ub2e4. <code>\uc774\uba54\uc77c<\/code> \uad6c\uccb4\uc801\uc73c\ub85c<\/td><\/tr>\n<tr><td>\ub300\uc2dc\ubcf4\ub4dc\uc5d0 \ud45c\uc2dc\ub41c \uc774 \uc798\ubabb\ub41c \ubc88\ud638\ub294 \uc5b4\ub514\uc5d0\uc11c \uc628 \uac83\uc785\ub2c8\uae4c?<\/td><td>\u201c\uc774 \ub124 \uac1c\uc758 \ud14c\uc774\ube14 \uc0c1\ub958 \uc5b4\ub518\uac00\uc5d0\u201d<\/td><td>\ub300\uc2dc\ubcf4\ub4dc \ud544\ub4dc\uc5d0\uc11c \ubb3c\ub9ac\uc801 \uc18c\uc2a4 \uc5f4\uae4c\uc9c0 \uc774\uc5b4\uc9c0\ub294 \uc815\ud655\ud55c \ud45c\ud604\uc2dd \uccb4\uc778<\/td><\/tr>\n<tr><td>\uc5b4\ub5a4 \ucd9c\ub825\ubb3c\uc5d0 \uac1c\uc778 \uc2dd\ubcc4 \uc815\ubcf4(PII)\uac00 \ud3ec\ud568\ub418\uc5b4 \uc788\uc2b5\ub2c8\uae4c? <code>ssn<\/code>?<\/td><td>\uc6d0\ubcf8 \ud14c\uc774\ube14 \uc774\ud6c4\uc758 \ubaa8\ub4e0 \ud14c\uc774\ube14\uc740 (\uc6d0\ubcf8 \ud14c\uc774\ube14 \uc5ec\ubd80\uc640 \uad00\uacc4\uc5c6\uc774) <code>ssn<\/code> \uc804\ud30c\ud558\ub2e4<\/td><td>\uc815\ud655\ud55c \uc5f4 \uc138\ud2b8\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. <code>ssn<\/code> \uc2e4\uc81c \uac00\uce58\ub294 \ub3c4\ub2ec\ud569\ub2c8\ub2e4<\/td><\/tr>\n<tr><td>\uc774 \uc2a4\ud14c\uc774\uc9d5 \uc5f4\uc744 \uc0ad\uc81c\ud560 \uc218 \uc788\uc744\uae4c\uc694?<\/td><td>\uc54c \uc218 \uc5c6\uc74c \u2014 \ud45c\uac00 \ucc38\uc870\ub418\uc5b4 \uc788\uc73c\ubbc0\ub85c, \ucc38\uc870\ub418\uc9c0 \uc54a\uc558\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/td><td>\uc608, \ud558\uc704 \uc5f4\uc5d0\uc11c \uc9c1\uc811 \ub610\ub294 \uac04\uc811\uc801\uc73c\ub85c \ud574\ub2f9 \uac12\uc744 \uc77d\uc9c0 \uc54a\ub294 \uacbd\uc6b0\uc785\ub2c8\ub2e4.<\/td><\/tr>\n<\/tbody><\/table><\/figure>\n\n\n\n<p>\uc624\ud0d0\uc73c\ub85c \uc778\ud55c \ube44\uc6a9\uc740 \ub2e8\uc21c\ud55c \uc774\ub860\uc801 \ubb38\uc81c\uac00 \uc544\ub2d9\ub2c8\ub2e4. \uc2a4\ud0a4\ub9c8 \ubcc0\uacbd\uc73c\ub85c \uc778\ud574 \ud14c\uc774\ube14 \uc218\uc900\uc5d0\uc11c 40\uac1c\uc758 \ud558\uc704 \ub300\uc2dc\ubcf4\ub4dc\uac00 \uacbd\uace0\ub97c \ubc1b\uc558\uc9c0\ub9cc \uc2e4\uc81c\ub85c \ubcc0\uacbd\ub41c \uc5f4\uc744 \uc0ac\uc6a9\ud558\ub294 \ub300\uc2dc\ubcf4\ub4dc\ub294 3\uac1c\ubfd0\uc774\ub77c\uba74, \ub098\uba38\uc9c0 37\uac1c\ub294 \ubd88\ud544\uc694\ud558\uac8c \uc7ac\ud14c\uc2a4\ud2b8\ub418\uac70\ub098, \ub354 \ub098\uc058\uac8c\ub294 \ud300\uc774 \ub370\uc774\ud130 \uacc4\ubcf4 \ub3c4\uad6c\ub97c \ubb34\uc2dc\ud558\uac8c \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub370\uc774\ud130 \uacc4\ubcf4\uc758 \uc2e0\ub8b0\uc131\uc740 \uc815\ud655\uc131\uc5d0 \ub2ec\ub824 \uc788\uc73c\uba70, \uadf8 \uc815\ud655\uc131\uc740 \uc5f4 \uc218\uc900\uc5d0\uc11c \uacb0\uc815\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc608\uc2dc: CTE, \uc870\uc778 \ubc0f \uc9d1\uacc4\ub97c \ud1b5\ud574 \ud558\ub098\uc758 \uc5f4\uc744 \ucc98\ub9ac\ud558\ub294 \ubc29\ubc95<\/h2>\n\n\n\n<p>\ub2e4\uc74c\uc740 \uac04\ub2e8\ud558\uc9c0\ub9cc \ud604\uc2e4\uc801\uc778 \uc9c8\ubb38\uc785\ub2c8\ub2e4. \ubaa9\ud45c\ub294 \uc815\ud655\ud788 \uc5b4\ub514\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294\uc9c0 \ucd94\uc801\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. <code>\ucd1d\uc218\uc775<\/code> ~\uc5d0\uc11c \uc720\ub798\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\ucd5c\uadfc \uc8fc\ubb38 \ud14c\uc774\ube14(recent_orders)\uc5d0\uc11c o.order_id, o.customer_id, o.amount, o.status \uac12\uc744 \uc120\ud0dd\ud558\uace0, o.order_date\uac00 &#039;2026-01-01&#039; \uc774\uc0c1\uc778 \uc8fc\ubb38 \ud14c\uc774\ube14(orders)\uc758 c.region\uacfc r.amount\uc758 \ud569\uacc4\ub97c \ucd1d \uc218\uc775(total_revenue)\uc73c\ub85c \uacc4\uc0b0\ud55c \ud6c4, c.customer_id\uc640 r.customer_id\uac00 \uac19\uc740 \uace0\uac1d \ud14c\uc774\ube14(customers c)\uc744 \uc870\uc778\ud569\ub2c8\ub2e4. \uc774\ub54c r.status \uac12\uc774 &#039;COMPLETED&#039;\uc778 \uc870\uac74\uc744 \ub9cc\uc871\ud558\ub294 \uace0\uac1d \ud14c\uc774\ube14\uc744 c.region\uc73c\ub85c \uadf8\ub8f9\ud654\ud569\ub2c8\ub2e4.<\/code><\/pre>\n\n\n\n<p>\ud574\uacb0 \uc911 <code>\ucd1d\uc218\uc775<\/code> \uc138 \ubc88\uc758 \ud649\uc774 \ud544\uc694\ud569\ub2c8\ub2e4:<\/p>\n\n\n\n<ol><li><code>\ucd1d\uc218\uc775<\/code> \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ub429\ub2c8\ub2e4. <code>\ud569\uacc4(r.amount)<\/code>\uadf8\ub7ec\ubbc0\ub85c \uadf8 \uac12\uc740 \ud574\ub2f9 \uc5f4\uc5d0\uc11c \uac00\uc838\uc635\ub2c8\ub2e4. <code>\uc591<\/code> \ubcc4\uce6d\uc774 \uc9c0\uc815\ub41c \uad00\uacc4 <code>\uc544\ub974 \uc790\ud615<\/code>\uc9d1\uacc4 \ud568\uc218\ub97c \ud1b5\uacfc\ud588\uc2b5\ub2c8\ub2e4.<\/li>\n<li><code>\uc544\ub974 \uc790\ud615<\/code> \uc774\uac83\uc740 \ud45c\uac00 \uc544\ub2d9\ub2c8\ub2e4. \uc774\uac83\uc740 CTE\uc785\ub2c8\ub2e4. <code>\ucd5c\uadfc \uc8fc\ubb38<\/code>\uc758 <code>\uc591<\/code> \uceec\ub7fc\uc740 \ud1b5\uacfc\uc785\ub2c8\ub2e4. <code>\uc8fc\ubb38 \uae08\uc561<\/code>\ubcc4\uce6d, CTE \ubc0f \uc5f4 \ud22c\uc601\uc740 \ubaa8\ub450 \ubb3c\ub9ac\uc801 \uc18c\uc2a4\ub97c \ud30c\uc545\ud558\uae30 \uc804\uc5d0 \ud574\uacb0\ub418\uc5b4\uc57c \ud569\ub2c8\ub2e4.<\/li>\n<li>\ub530\ub77c\uc11c \uc644\uc804\ud55c \uc9c1\uacc4 \ud608\ud1b5\uc740 \ud558\ub098\uc758 \ubb3c\ub9ac\uc801 \uae30\ub465\uc73c\ub85c \uc774\ub8e8\uc5b4\uc838 \uc788\uc2b5\ub2c8\ub2e4. <code>\uc8fc\ubb38 \uae08\uc561<\/code> \u2192 <code>\ucd5c\uadfc \uc8fc\ubb38 \uae08\uc561<\/code> \u2192 <code>\ud569\uc9d1\ud569()<\/code> \u2192 <code>\ucd1d\uc218\uc775<\/code>.<\/li><\/ol>\n\n\n\n<p>\ud558\uc9c0\ub9cc \uacb0\uacfc\uc5d0 \ub098\ud0c0\ub098\uc9c0 \uc54a\uc73c\uba74\uc11c\ub3c4 \uacb0\uacfc\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \ub2e4\uc12f \uac1c\uc758 \uc694\uc18c\uac00 \ub354 \uc788\uc2b5\ub2c8\ub2e4. <code>\uc8fc\ubb38.\uc8fc\ubb38_\ub0a0\uc9dc<\/code> CTE \ub0b4\ubd80\uc758 \ud589\uc744 \ud544\ud130\ub9c1\ud569\ub2c8\ub2e4. <code>\uc8fc\ubb38 \uc0c1\ud0dc<\/code> \uc678\ubd80\uc5d0\uc11c \ub2e4\uc2dc \ud544\ud130\ub9c1\ud569\ub2c8\ub2e4. <code>\uc5b4\ub514<\/code>, <code>\uc8fc\ubb38.\uace0\uac1d_ID<\/code> \uadf8\ub9ac\uace0 <code>\uace0\uac1d.\uace0\uac1d_ID<\/code> \uc5b4\ub5a4 \ud589\ub4e4\uc744 \uacb0\ud569\ud560\uc9c0 \uacb0\uc815\ud558\uace0 <code>\uace0\uac1d \uc9c0\uc5ed<\/code> \ud589\uc744 \uc9d1\uacc4 \ubc84\ud0b7\uc73c\ub85c \uadf8\ub8f9\ud654\ud558\ub294 \ubc29\ubc95\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ud56d\ubaa9 \uc911 \uc5b4\ub290 \ud558\ub098\ub77c\ub3c4 \uc758\ubbf8\ub860\uc744 \ubcc0\uacbd\ud558\uba74 <code>\ucd1d\uc218\uc775<\/code> \uac12\uc774 \ucd9c\ub825 \uacb0\uacfc\uc5d0 \ub098\ud0c0\ub098\uc9c0 \uc54a\ub354\ub77c\ub3c4 \ubcc0\uacbd \uc0ac\ud56d\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \ud14d\uc2a4\ud2b8 \uac80\uc0c9\uc744 \ud558\uba74 &quot;\uc774 \ucffc\ub9ac\ub294 \ub2e4\uc74c\uc744 \uac74\ub4dc\ub9bd\ub2c8\ub2e4&quot;\ub77c\ub294 \uacb0\uacfc\uac00 \ud45c\uc2dc\ub429\ub2c8\ub2e4. <code>\uba85\ub839<\/code> \uadf8\ub9ac\uace0 <code>\uace0\uac1d<\/code>&quot;\uc5f4 \uc218\uc900 \uacc4\ubcf4\ub294 \uc5b4\ub5a4 \uc5f4\uc774 \uac12\uc744 \uac00\uc9c0\uace0 \uc788\ub294\uc9c0, \uadf8\ub9ac\uace0 \uadf8 \uac12\uc744 \uad00\ub9ac\ud558\ub294 \ub2e4\uc12f \uac1c\uc758 \uc5f4\uc774 \ubb34\uc5c7\uc778\uc9c0 \uc54c\ub824\uc90d\ub2c8\ub2e4.&quot;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc9c1\uc811 \ud608\ud1b5\uacfc \uac04\uc811 \ud608\ud1b5\uc758 \ucc28\uc774: fdd\/fddi \uad6c\ubd84\ubc95<\/h2>\n\n\n\n<p>\uc774 \ub450 \uac00\uc9c0 \uc720\ud615\uc758 \uad00\uacc4\ub294 \uac01\uac01 \ub2e4\ub978 \uc774\ub984\uc73c\ub85c \ubd88\ub9b4 \ub9cc\ud569\ub2c8\ub2e4. Gudu SQLFlow\uc758 \uacc4\ubcf4 \ubaa8\ub378\uc5d0\uc11c\ub294, <strong>\uc9c1\uc811 \ub370\uc774\ud130 \ud750\ub984<\/strong> (\ud45c\uc2dc\ub428) <code>fdd<\/code>)\ub294 \uc18c\uc2a4 \uc5f4\uc758 \uac12\uc774 \ud568\uc218, \ud615\ubcc0\ud658 \ub610\ub294 \uc9d1\uacc4\uc5d0 \uc758\ud574 \ubcc0\ud658\ub418\uc5b4 \ub300\uc0c1 \uc5f4\ub85c \uc804\ub2ec\ub428\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. <strong>\uac04\uc811 \ub370\uc774\ud130 \ud750\ub984<\/strong> (\ud45c\uc2dc\ub428) <code>fddi<\/code>)\ub294 \uc18c\uc2a4 \uc5f4\uc774 \uac12\uc744 \uc81c\uacf5\ud558\uc9c0 \uc54a\uace0 \ub300\uc0c1\uc5d0 \uc601\ud5a5\uc744 \ubbf8\uce58\ub294 \uac83\uc744 \uc758\ubbf8\ud569\ub2c8\ub2e4. \uc0ac\uc6a9\ub41c \uc5f4 <code>\uc5b4\ub514<\/code> \uc220\uc5b4, <code>\uac00\uc785\ud558\ub2e4<\/code> \uc815\ud669, <code>\uadf8\ub8f9\ud654 \uae30\uc900<\/code> \ud0a4 \ubc0f \uc720\uc0ac\ud55c \uc870\ud56d.<\/p>\n\n\n\n<p>SQLFlow\ub294 \uc774\ub7ec\ud55c \uc694\uc18c\ub4e4\uc744 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc5d0\uc11c \uac01\uac01 \ubcc4\ub3c4\ub85c \ud1a0\uae00 \uac00\ub2a5\ud55c \uad00\uacc4 \uc720\ud615\uc73c\ub85c \ubaa8\ub378\ub9c1\ud569\ub2c8\ub2e4. \uac04\uc811 \uacc4\ubcf4\ub97c \ub044\uba74 \uc21c\uc218\ud55c \uac12 \ucd9c\ucc98\ub9cc \ubcfc \uc218 \uc788\ub294\ub370, \uc774\ub294 \uac10\uc0ac\uc790\uac00 \uaddc\uc81c \ubcf4\uace0\uc11c\uc5d0 \uc5b4\ub5a4 \uc18c\uc2a4 \ud544\ub4dc\uac00 \ud3ec\ud568\ub418\ub294\uc9c0 \uc785\uc99d\ud560 \ub54c \ud544\uc694\ud55c \ubcf4\uae30\uc785\ub2c8\ub2e4. \ubc18\ub300\ub85c, \uc804\uccb4 \uc601\ud5a5 \ubc94\uc704\ub97c \ubcf4\ub824\uba74 \ucf1c\uc57c \ud569\ub2c8\ub2e4. \uc774\ub294 \uc5d4\uc9c0\ub2c8\uc5b4\uac00 \uc5f4\uc744 \uc218\uc815\ud558\uae30 \uc804\uc5d0 \ud544\uc694\ud55c \ubcf4\uae30\uc778\ub370, \ud544\ud130 \uc5f4\uc744 \uc0ad\uc81c\ud558\uba74 \ubaa8\ub4e0 \ud558\uc704 \uc9d1\uacc4\uac00 \uc790\ub3d9\uc73c\ub85c \ubcc0\uacbd\ub418\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \ub300\ubd80\ubd84\uc758 \uacbd\uc7c1 \uacc4\ubcf4 \ub3c4\uad6c\ub294 \uc774\ub7ec\ud55c \uad6c\ubd84\uc744 \uc804\ud600 \ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc9c1\uc811 \ud750\ub984\ub9cc \ubcf4\uace0\ud558\uc5ec \uc2e4\uc81c \uc601\ud5a5\uc744 \ub193\uce58\uac70\ub098, \ubaa8\ub4e0 \uac83\uc744 \ud558\ub098\ub85c \ubb36\uc5b4 \uc5f4 \uc218\uc900\uc73c\ub85c \uc62e\uaca8 \ub193\uc558\ub358 \uc624\ud0d0\uc744 \ub2e4\uc2dc \ubc1c\uc0dd\uc2dc\ud0a4\uae30\ub3c4 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc774\uac83\uc774 \uc815\uaddc \ud45c\ud604\uc2dd\uc774 \uc544\ub2cc \uc758\ubbf8\ub860\uc801 \uad6c\ubb38 \ubd84\uc11d\uc744 \ud544\uc694\ub85c \ud558\ub294 \uc774\uc720\ub294 \ubb34\uc5c7\uc77c\uae4c\uc694?<\/h2>\n\n\n\n<p>\ud14c\uc774\ube14 \uc774\ub984\uacfc \uceec\ub7fc \uc774\ub984\uc744 SQL \ud14d\uc2a4\ud2b8\uc5d0\uc11c \ud328\ud134 \ub9e4\uce6d\ud558\uc5ec \uacc4\ubcf4\ub97c \ucd94\ucd9c\ud558\ub824\ub294 \uc720\ud639\uc774 \uc788\uc9c0\ub9cc, \uc774\ub7ec\ud55c \uc811\uadfc \ubc29\uc2dd\uc740 \uc2e4\uc81c \uc6b4\uc601 \ud658\uacbd\uc5d0\uc11c \ud754\ud788 \ubcfc \uc218 \uc788\ub294 SQL \uad6c\ubb38\uacfc \uc815\ud655\ud788 \uc77c\uce58\ud558\ub294 \ubb38\uc81c\uc810\uc744 \ub4dc\ub7ec\ub0c5\ub2c8\ub2e4.<\/p>\n\n\n\n<ul><li><strong>\ubcc4\uc758 \ud33d\ucc3d.<\/strong> <code>\uc120\ud0dd\ud558\ub2e4 *<\/code> \uc5f4 \uc774\ub984\uc744 \uc804\ud600 \uc9c0\uc815\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc5b4\ub5a4 \uc5f4\uc774 \uc804\ub2ec\ub418\ub294\uc9c0\ub294 \ubd84\uc11d \uc2dc\uc810\uc758 \uae30\ubcf8 \uad00\uacc4 \uc2a4\ud0a4\ub9c8\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\uba70, \uc870\uc778\uc758 \uacbd\uc6b0 \uc870\uc778\ub41c \ubaa8\ub4e0 \uad00\uacc4\uc758 \uacb0\ud569\ub41c \uc2a4\ud0a4\ub9c8\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4. \ud574\uacb0 <code>*<\/code> \uba54\ud0c0\ub370\uc774\ud130\uc640 \ubc94\uc704 \uaddc\uce59\uc774 \ud544\uc694\ud558\uba70, \ud14d\uc2a4\ud2b8 \ud328\ud134\uc73c\ub85c\ub294 \uc5f4 \ubaa9\ub85d\uc744 \uc0dd\uc131\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ubcf4\uae30 \ud574\uc0c1\ub3c4.<\/strong> \ucffc\ub9ac\uac00 \uc77d\ud790 \ub54c <code>v_sales.net_amount<\/code>\uc9c4\uc815\ud55c \uacc4\ubcf4\ub294 \ubdf0\uc758 \uc815\uc758\ub97c \ud1b5\ud574 \uc774\uc5b4\uc9c0\uba70, \ubdf0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \ub2e4\ub978 \ubdf0 \uc704\uc5d0 \uc313\uc785\ub2c8\ub2e4. \ubd84\uc11d\uae30\ub294 \uac01 \uc815\uc758\ub97c \uc7ac\uadc0\uc801\uc73c\ub85c \ud655\uc7a5\ud558\uace0 \uc5f4 \ub9e4\ud551\uc744 \uc5f0\uacb0\ud574\uc57c \ud558\ub294\ub370, \uc774\ub294 \ubb38\uc790\uc5f4\uc774 \uc544\ub2cc \ud574\uacb0\ub41c \uc758\ubbf8 \ubaa8\ub378\uc5d0 \ub300\ud55c \uc791\uc5c5\uc785\ub2c8\ub2e4.<\/li>\n<li><strong>\ubc94\uc704\uc640 \ubaa8\ud638\uc131.<\/strong> \uc790\uaca9 \ubbf8\ub2ec \uce7c\ub7fc\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4. <code>\uc0c1\ud0dc<\/code> \uc138 \ud14c\uc774\ube14\uc744 \uc870\uc778\ud560 \ub54c, \ud574\ub2f9 \ud14c\uc774\ube14\uc740 SQL\uc758 \ubc94\uc704 \uc9c0\uc815 \uaddc\uce59\uacfc \ud14c\uc774\ube14 \uc2a4\ud0a4\ub9c8\uc5d0 \ub530\ub77c \uc815\ud655\ud788 \ud558\ub098\uc758 \uad00\uacc4\uc5d0 \uc18d\ud558\uac8c \ub429\ub2c8\ub2e4. \uc798\ubabb \ucd94\uce21\ud558\uba74 \uacc4\ubcf4 \uadf8\ub798\ud504\uac00 \uc870\uc6a9\ud788 \uc190\uc0c1\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ud45c\ud604.<\/strong> <code>COALESCE(ax, by)<\/code>, <code>\uc0ac\ub840<\/code> \ubd84\uae30 \ubc0f \uc708\ub3c4\uc6b0 \ud568\uc218\ub294 \uac01\uac01 \uc11c\ub85c \ub2e4\ub978 \uae30\uc5ec \uc5f4 \uc9d1\ud569\uc744 \uc815\uc758\ud569\ub2c8\ub2e4. \uc624\uc9c1 \uc2e4\uc81c \ud45c\ud604\uc2dd \ud2b8\ub9ac\ub9cc\uc774 \uc774\ub97c \ud3ec\ucc29\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<li><strong>\ubc29\uc5b8.<\/strong> \uc624\ub77c\ud074\uc758 <code>\uc5f0\uacb0 \ubc29\ubc95<\/code>T-SQL\uc758 <code>\uc0b0\ucd9c<\/code> \uc870\ud56d, BigQuery\uc758 <code>\uc81c\uc678\ud558\uace0<\/code> \ubcc4\ud45c \ubaa9\ub85d\uc5d0\uc11c \uac01 \ubc29\uc5b8\uc740 \uc77c\ubc18\uc801\uc778 ANSI \ubb38\ubc95\uc774 \uad6c\ubb38 \ubd84\uc11d\uc5d0 \uc2e4\ud328\ud558\ub294 \uad6c\ubb38\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4. SQLFlow\ub294 \ud558\ub098\uc758 \ucd5c\uc18c \uacf5\ud1b5\ubd84\ubaa8 \ubb38\ubc95 \ub300\uc2e0 39\uac1c\uc758 \ubc29\uc5b8\ubcc4 \uad6c\ubb38 \ubd84\uc11d\uae30\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/li><\/ul>\n\n\n\n<p>In short, accurate column-level lineage is a compiler problem. SQLFlow is built on the General SQL Parser, a full SQL compiler front-end (lexer, parser, semantic resolver, data-flow analyzer) developed commercially since the mid-2000s and validated against roughly 13,600 per-dialect SQL test fixtures. The same engine resolves the hardest cases: stored procedure bodies in Oracle PL\/SQL and SQL Server T-SQL, lineage through procedure parameters and temp tables, and dynamic SQL assembled inside procedures.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uceec\ub7fc \uc218\uc900\uc758 \uacc4\ubcf4\ub97c \uc2e4\uc81c\ub85c \ud655\uc778\ud558\ub294 \ubc29\ubc95<\/h2>\n\n\n\n<p>Gudu SQLFlow\ub294 \uc790\ub3d9\ud654\ub41c \ub3c4\uad6c\uc785\ub2c8\ub2e4. <a href=\"https:\/\/www.gudusoft.com\/ko\/sql-%eb%8d%b0%ec%9d%b4%ed%84%b0-%ea%b3%84%eb%b3%b4-%eb%8f%84%ea%b5%ac\/\">SQL \ub370\uc774\ud130 \uacc4\ubcf4 \ub3c4\uad6c<\/a> \uc774 \ub3c4\uad6c\ub294 \ubd99\uc5ec\ub123\uc740 \ucffc\ub9ac, \uc5c5\ub85c\ub4dc\ub41c \ud30c\uc77c, JDBC\ub97c \ud1b5\ud55c \uc2e4\uc2dc\uac04 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uba54\ud0c0\ub370\uc774\ud130, dbt \ub9e4\ub2c8\ud398\uc2a4\ud2b8 \ud30c\uc77c, Snowflake \ucffc\ub9ac \uae30\ub85d \ubc0f Redshift \ucffc\ub9ac \ub85c\uadf8 \ub4f1 \uc5b4\ub5a4 SQL \ucffc\ub9ac\ub97c \uc0ac\uc6a9\ud558\ub4e0 \uc774 \ud398\uc774\uc9c0\uc5d0 \uc124\uba85\ub41c \uc5f4 \uc218\uc900 \uadf8\ub798\ud504\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4. \ucd9c\ub825\uc740 \uc5f4\ubcc4\ub85c \uc790\uc138\ud788 \uc0b4\ud3b4\ubcfc \uc218 \uc788\ub294 \ub300\ud654\ud615 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uacfc JSON \ub610\ub294 CSV \ud615\uc2dd\uc758 \uad6c\uc870\ud654\ub41c \uacc4\ubcf4 \ub370\uc774\ud130, PNG \ub0b4\ubcf4\ub0b4\uae30, \uadf8\ub9ac\uace0 REST API\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc5d4\ud130\ud504\ub77c\uc774\uc988 \uaddc\ubaa8\uc5d0\uc11c SQLFlow\ub294 100\uac1c \uc774\uc0c1\uc758 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640 \ubc31\ub9cc \uac1c \uc774\uc0c1\uc758 \uc5f4\uc744 \ud3ec\ud568\ud558\ub294 \ud658\uacbd\uc744 \uc77c\uad04 \uc2a4\uce94\ud558\uace0, \uc601\uad6c\uc801\uc778 \uacc4\ubcf4 \uc800\uc7a5\uc18c\uc5d0 \ub300\ud574 \uc99d\ubd84 \uc2a4\uce94\uc744 \uc2e4\ud589\ud558\uba70, DataHub, Microsoft Purview \ubc0f OpenMetadata\ub85c \ub0b4\ubcf4\ub0b4\ubbc0\ub85c \uc5f4 \uc218\uc900\uc758 \uacc4\ubcf4\ub97c \uae30\uc874\uc5d0 \uc0ac\uc6a9 \uc911\uc778 \uce74\ud0c8\ub85c\uadf8 \ub0b4\uc5d0\uc11c \uad00\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubd84\uc11d\uc740 \uc815\uc801\uc73c\ub85c \uc774\ub8e8\uc5b4\uc9c0\uae30 \ub54c\ubb38\uc5d0 SQLFlow\ub294 SQL \ucf54\ub4dc\uc640 \uc2a4\ud0a4\ub9c8 \uba54\ud0c0\ub370\uc774\ud130\ub9cc \uc77d\uace0 \ud14c\uc774\ube14\uc758 \ud589\uc740 \uc808\ub300 \uc77d\uc9c0 \uc54a\uc73c\uba70, \uc628\ud504\ub808\ubbf8\uc2a4 \ubc84\uc804\uc740 SQL \ud14d\uc2a4\ud2b8\ub97c \ub124\ud2b8\uc6cc\ud06c \ub0b4\uc5d0 \uc644\uc804\ud788 \ubcf4\uad00\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<p>\uc704\uc640 \uac19\uc740 \ucd94\uc801 \uc815\ubcf4\ub97c \ub354 \uc790\uc138\ud788 \ubcf4\ub824\uba74, \uc11c\ube0c\ucffc\ub9ac, \ubdf0, \uc800\uc7a5 \ud504\ub85c\uc2dc\uc800 \ubc0f dbt \ubaa8\ub378 \uc804\ubc18\uc5d0 \uac78\uce5c \ucd94\uc801 \uc815\ubcf4\ub97c \ud655\uc778\ud558\ub824\uba74 \uc800\ud76c \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \ucc38\uc870\ud558\uc138\uc694. <a href=\"https:\/\/www.gudusoft.com\/ko\/%eb%8d%b0%ec%9d%b4%ed%84%b0-%ea%b3%84%eb%b3%b4-%ec%98%88%ec%8b%9c\/\">\uc791\uc5c5 \ub370\uc774\ud130 \uacc4\ubcf4 \uc608\uc2dc<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\uc790\uc8fc \ubb3b\ub294 \uc9c8\ubb38<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud14c\uc774\ube14 \uc218\uc900 \ub370\uc774\ud130 \uacc4\ubcf4\uc640 \uceec\ub7fc \uc218\uc900 \ub370\uc774\ud130 \uacc4\ubcf4\uc758 \ucc28\uc774\uc810\uc740 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n\n\n<p>\ud14c\uc774\ube14 \uc218\uc900 \uacc4\ubcf4\ub294 \uc5b4\ub5a4 \ud14c\uc774\ube14\uacfc \ubdf0\uac00 \uc5b4\ub5a4 \uac1d\uccb4 \uc30d\uc5d0 \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud558\ub294\uc9c0, \uadf8\ub9ac\uace0 \uac01 \uac1d\uccb4 \uc30d\ub9c8\ub2e4 \ud558\ub098\uc758 \uc5f0\uacb0\uc120\uc744 \uae30\ub85d\ud569\ub2c8\ub2e4. \uc5f4 \uc218\uc900 \uacc4\ubcf4\ub294 \ubaa8\ub4e0 \ucd9c\ub825 \uc5f4\uc5d0 \ub300\ud574 \ud574\ub2f9 \uc5f4\uc5d0 \ub370\uc774\ud130\ub97c \uc81c\uacf5\ud558\ub294 \uc815\ud655\ud55c \uc18c\uc2a4 \uc5f4\uacfc \uc801\uc6a9\ub41c \ubcc0\ud658\uc744 \uae30\ub85d\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc5f4 \uc218\uc900\uc758 \uc138\ubd84\ud654\ub294 \uc601\ud5a5 \ubd84\uc11d\uc5d0\uc11c \uc624\ud0d0\uc744 \uc81c\uac70\ud558\uace0 \uac10\uc0ac \uacb0\uacfc\ub97c \uc815\ud655\ud558\uac8c \ub9cc\ub4dc\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uac04\uc811\uc801(\uc601\ud5a5) \uacc4\ubcf4\ub780 \ubb34\uc5c7\uc778\uac00\uc694?<\/h3>\n\n\n<p>\uac04\uc811 \uacc4\ubcf4\ub294 \uc18c\uc2a4 \uc5f4\uc744 \ud574\ub2f9 \uc5f4\uc758 \uac12\uc5d0\ub294 \uc601\ud5a5\uc744 \uc8fc\uc9c0 \uc54a\uace0 \ucd9c\ub825\uc5d0 \uc5f0\uacb0\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. WHERE \uc808, JOIN \uc870\uac74, GROUP BY \ud0a4 \ubc0f \uc9d1\uacc4 \uc870\uac74\uc2dd\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc5f4\uc774 \uc774\uc5d0 \ud574\ub2f9\ud569\ub2c8\ub2e4. SQLFlow\ub294 \uc774\ub97c \uc9c1\uc811 \ub370\uc774\ud130 \ud750\ub984(fdd)\uacfc \ubcc4\ub3c4\ub85c \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc5d0\uc11c \ud65c\uc131\ud654\/\ube44\ud65c\uc131\ud654\ud560 \uc218 \uc788\ub294 \ubcc4\ub3c4\uc758 \uad00\uacc4 \uc720\ud615(fddi)\uc73c\ub85c \ubaa8\ub378\ub9c1\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc815\uaddc \ud45c\ud604\uc2dd\uc774\ub098 grep\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc5f4 \uc218\uc900\uc758 \uacc4\ubcf4\ub97c \ucd94\ucd9c\ud560 \uc218 \uc788\ub098\uc694?<\/h3>\n\n\n<p>\uc2e0\ub8b0\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc2a4\ud0c0 \ud655\uc7a5, \ubdf0 \ud574\uc0c1\ub3c4, \ud55c\uc815\ub418\uc9c0 \uc54a\uc740 \uc5f4 \uc774\ub984, CASE \ub610\ub294 COALESCE\uc640 \uac19\uc740 \ud45c\ud604\uc2dd\uc740 \ubaa8\ub450 SQL\uc758 \uc2e4\uc81c \uad6c\ubb38 \ubd84\uc11d\uacfc \uc2a4\ud0a4\ub9c8 \uba54\ud0c0\ub370\uc774\ud130\ub97c \uae30\ubc18\uc73c\ub85c \uad6c\ucd95\ub41c \uc758\ubbf8 \ubaa8\ub378\uc744 \ud544\uc694\ub85c \ud569\ub2c8\ub2e4. \ud328\ud134 \ub9e4\uce6d\uc740 \ud14c\uc774\ube14 \uc774\ub984\uc740 \ucc3e\uc744 \uc218 \uc788\uc9c0\ub9cc, \uc5b4\ub5a4 \uc5f4\uc774 \uc5b4\ub514\ub85c \ud750\ub974\ub294\uc9c0\ub294 \ud30c\uc545\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ubdf0\uc640 SELECT *\ub97c \ud1b5\ud574 \uceec\ub7fc \uc218\uc900\uc758 \uacc4\ubcf4 \ucd94\uc801\uc774 \uac00\ub2a5\ud55c\uac00\uc694?<\/h3>\n\n\n<p>\ub124, \ub3c4\uad6c\uac00 \uc774\ub97c \ud574\uacb0\ud55c\ub2e4\uba74 \uac00\ub2a5\ud569\ub2c8\ub2e4. SQLFlow\ub294 SELECT * \ucffc\ub9ac\ub97c \uc2a4\ud0a4\ub9c8 \uba54\ud0c0\ub370\uc774\ud130\uc5d0 \ub300\ud574 \ud655\uc7a5\ud558\uace0 \ubdf0, CTE \ubc0f \uc11c\ube0c\ucffc\ub9ac\ub97c \ud1b5\ud574 \uc5f4 \ucc38\uc870\ub97c \uc7ac\uadc0\uc801\uc73c\ub85c \ud574\uacb0\ud558\ubbc0\ub85c, \ucd5c\uc885 \ucd9c\ub825 \uc5f4\ubd80\ud130 \ubb3c\ub9ac\uc801 \uc18c\uc2a4 \uc5f4\uae4c\uc9c0 \ubaa8\ub4e0 \uacc4\ubcf4\ub97c \ucd94\uc801\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\uc800\uc7a5 \ud504\ub85c\uc2dc\uc800\uc640 \ub3d9\uc801 SQL\uc5d0\uc11c\ub3c4 \uc791\ub3d9\ud558\ub098\uc694?<\/h3>\n\n\n<p>\uc608. SQLFlow\ub294 Oracle PL\/SQL \ubc0f SQL Server T-SQL\uc744 \uc704\ud55c \uc804\uc6a9 \ud504\ub85c\uc2dc\uc800 \ud30c\uc11c\ub97c \uc81c\uacf5\ud558\uace0, \ud504\ub85c\uc2dc\uc800 \ub9e4\uac1c\ubcc0\uc218 \ubc0f \uc784\uc2dc \ud14c\uc774\ube14\uc744 \ud1b5\ud574 \uacc4\ubcf4\ub97c \ucd94\uc801\ud558\uba70, \ud504\ub85c\uc2dc\uc800 \ub0b4\uc5d0\uc11c \uad6c\uc131\ub41c \ub3d9\uc801 SQL\uc744 \ud574\uc11d\ud558\uace0, \ud504\ub85c\uc2dc\uc800 \uac04 \ud638\ucd9c \uadf8\ub798\ud504\ub97c \uc0dd\uc131\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ub0b4 SQL \ucffc\ub9ac\uc5d0 \ub300\ud55c \uc5f4 \uc218\uc900 \uacc4\ubcf4\ub97c \uc5b4\ub5bb\uac8c \uc5bb\uc744 \uc218 \uc788\ub098\uc694?<\/h3>\n\n\n<p>SQLFlow Cloud\uc758 \ubb34\ub8cc \ud2f0\uc5b4\uc5d0 \ucffc\ub9ac\ub97c \ubd99\uc5ec\ub123\uc73c\uba74 \ube0c\ub77c\uc6b0\uc800\uc5d0\uc11c \uc5f4 \uc218\uc900 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc774 \ud45c\uc2dc\ub429\ub2c8\ub2e4. \uc804\uccb4 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \uacbd\uc6b0 JDBC\ub97c \ud1b5\ud574 \uc5f0\uacb0\ud558\uac70\ub098 dbt \ub9e4\ub2c8\ud398\uc2a4\ud2b8\ub97c \uac00\uc838\uc62c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uaddc\uc81c \ud658\uacbd\uc758 \uacbd\uc6b0 SQLFlow On-Premise\ub294 \uc790\uccb4 \ub124\ud2b8\uc6cc\ud06c \ub0b4\uc758 Docker \ub610\ub294 Kubernetes\uc5d0\uc11c \uc2e4\ud589\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull has-background is-layout-constrained\" style=\"background-color:#60d5f6;padding-top:32px;padding-bottom:32px\"><div class=\"wp-block-group__inner-container\">\n\n<h2 class=\"wp-block-heading\">\uccab \ubc88\uc9f8 \uc5f4\uc758 \ucd9c\ucc98\ub97c \ucd94\uc801\ud574 \ubcf4\uc138\uc694.<\/h2>\n\n\n<p>\uc774 \ud398\uc774\uc9c0\uc758 \uc608\uc81c \ucffc\ub9ac \ub610\ub294 \uc2e4\uc81c \uc6b4\uc601 \ud658\uacbd\uc5d0\uc11c \uc0ac\uc6a9\ud558\ub294 \uac00\uc7a5 \ubcf5\uc7a1\ud55c SQL \ucffc\ub9ac\ub97c \ubd99\uc5ec\ub123\uace0, \ucd9c\ub825 \uc5f4\uc744 \ud074\ub9ad\ud558\uba74 \ud574\ub2f9 \ucffc\ub9ac\uc758 \uc9c1\uc811 \ubc0f \uac04\uc811\uc801\uc778 \uacc4\ubcf4\ub97c \ubaa8\ub450 \ud655\uc778\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n<div class=\"wp-block-buttons is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/sqlflow.gudusoft.com\/?utm_source=gudusoft&amp;utm_medium=website&amp;utm_campaign=column-level-data-lineage\" target=\"_blank\" rel=\"noreferrer noopener\">SQLFlow\ub97c \ubb34\ub8cc\ub85c \uc0ac\uc6a9\ud574 \ubcf4\uc138\uc694.<\/a><\/div>\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.gudusoft.com\/ko\/%ec%97%b0%eb%9d%bd%ed%95%98%eb%8b%a4\/\">\uae30\uc5c5\uc6a9 \ub370\ubaa8\ub97c \uc694\uccad\ud558\uc138\uc694<\/a><\/div>\n<\/div>\n\n<\/div><\/div>\n\n\n\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@graph\": [\n        {\n            \"@type\": \"TechArticle\",\n            \"headline\": \"Column-Level Data Lineage: What It Is and Why Table-Level Isn't Enough\",\n            \"description\": \"Column-level data lineage maps every output column back to its exact source columns and transformations. A worked SQL example through a CTE, join, and aggregate, the direct vs indirect (fdd\\\/fddi) distinction, and why star expansion and view resolution require semantic parsing.\",\n            \"author\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Gudu Software\",\n                \"url\": \"https:\\\/\\\/www.gudusoft.com\\\/\"\n            },\n            \"publisher\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Gudu Software\",\n                \"url\": \"https:\\\/\\\/www.gudusoft.com\\\/\"\n            }\n        },\n        {\n            \"@type\": \"FAQPage\",\n            \"mainEntity\": [\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What is the difference between table-level and column-level data lineage?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Table-level lineage records which tables and views feed which, one edge per object pair. Column-level lineage records, for every output column, the exact source columns that feed it and the transformations applied. Column granularity is what removes false positives from impact analysis and makes audit answers exact.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"What is indirect (impact) lineage?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Indirect lineage links a source column to an output it influences without contributing its value: columns in WHERE clauses, JOIN conditions, GROUP BY keys, and aggregate predicates. SQLFlow models it as a separate relationship type (fddi) that you can toggle independently of direct dataflow (fdd) in the diagram.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Can I extract column-level lineage with regex or grep?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Not reliably. Star expansion, view resolution, unqualified column names, and expressions like CASE or COALESCE all require a semantic model built from a real parse of the SQL plus schema metadata. Pattern matching can find table names; it cannot resolve which columns flow where.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Does column-level lineage work through views and SELECT *?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Yes, if the tool resolves them. SQLFlow expands SELECT * against schema metadata and recursively resolves column references through views, CTEs, and subqueries, so lineage runs from the final output column all the way to physical source columns.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Does it work on stored procedures and dynamic SQL?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Yes. SQLFlow has dedicated procedural parsers for Oracle PL\\\/SQL and SQL Server T-SQL, traces lineage through procedure parameters and temp tables, resolves dynamic SQL assembled inside procedures, and renders a call graph of procedure-to-procedure invocations.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"How do I get column-level lineage for my own SQL?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Paste a query into SQLFlow Cloud's free tier and the column-level diagram renders in the browser. For whole databases, connect over JDBC or import a dbt manifest; for regulated environments, SQLFlow On-Premise runs in Docker or Kubernetes inside your own network.\"\n                    }\n                }\n            ]\n        }\n    ]\n}<\/script>","protected":false},"excerpt":{"rendered":"<p>Column-level data lineage maps every output column of a query, view, or report back to the exact source columns that produce it, together with each transformation applied along the way: functions, casts, joins, aggregations, and filters. Where table-level lineage says &#8220;table orders feeds table revenue_report&#8220;, column-level lineage says &#8220;revenue_report.total is SUM(orders.amount), filtered by orders.status and grouped by customers.region&#8220;. It is the granularity at which impact analysis, debugging, and audit answers become precise instead of approximate. This page defines the term, walks one output column through a real query with a CTE, a join, and an aggregate, and explains why extracting\u2026<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":5}},"_links":{"self":[{"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/pages\/6746"}],"collection":[{"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/comments?post=6746"}],"version-history":[{"count":0,"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/pages\/6746\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gudusoft.com\/ko\/wp-json\/wp\/v2\/media?parent=6746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}