2. ä»æ¥ã®è©± â PostgreSQLãé·æééç¨ãã¦ããã¨ãçªç¶æãã¯ãã® ãã¼ã¿ãè¦ããªããªã£ã¦ãã¾ãã¨ãããXIDã®å¨ååé¡ã¨å¼ ã°ããç¾è±¡ãããããã â ã§ãæ» å¤ã«ãç®ã«ãããã¾ãã â ãããç¡çç¢çã«ã§ããã£ã¦ã¿ãã 3. ãã©ã³ã¶ã¯ã·ã§ã³IDã¨ã¯ INSERT INTO r(i) VALUES(1); INSERT INTO r(i) VALUES(2); INSERT INTO r(i) VALUES(3); SELECT xmin, xmax, i FROM r; xmin xmax i 664 0 1 665 0 2 666 0 3 4. ãã©ã³ã¶ã¯ã·ã§ã³IDã¨ã¯ INSERT INTO r(i) VALUES(1); INSERT INTO r(i) VALUES(2); INSERT INTO r(i) VALUES(3); SELECT xmin, xmax,
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