{"id":5951,"date":"2015-01-30T23:59:37","date_gmt":"2015-01-31T04:59:37","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=5951"},"modified":"2015-09-03T08:13:43","modified_gmt":"2015-09-03T12:13:43","slug":"sql-%e0%a6%8f%e0%a6%b0-primary-key-%e0%a6%a4%e0%a6%a5%e0%a6%be-%e0%a6%aa%e0%a7%8d%e0%a6%b0%e0%a6%be%e0%a6%a5%e0%a6%ae%e0%a6%bf%e0%a6%95-%e0%a6%9a%e0%a6%be%e0%a6%ac%e0%a6%bf-%e0%a6%8f%e0%a6%b0","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=5951","title":{"rendered":"SQL \u098f\u09b0 PRIMARY KEY \u09a4\u09a5\u09be \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u099a\u09be\u09ac\u09bf \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0964SQL Primary Key Constraint"},"content":{"rendered":"<p>SQL \u098f\u09b0 PRIMARY KEY \u09a4\u09a5\u09be \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u099a\u09be\u09ac\u09bf \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0964<br \/>\n\u09ab\u09be\u099b\u09bf\u09b9\u09c1\u09b0 \u09b0\u09b9\u09ae\u09be\u09a8\u0964<br \/>\nMSCSE From Royal University of Dhaka.<br \/>\n\u099f\u09c7\u0995\u09a8\u09bf\u0995\u09cd\u09af\u09be\u09b0 \u098f\u0995\u09cd\u09b8\u09aa\u09be\u09b0\u09cd\u099f, \u09ac\u09be\u0982\u09b2\u09be\u09a6\u09c7\u09b6 \u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a8 \u0995\u09ae\u09bf\u09b6\u09a8 \u09b8\u099a\u09bf\u09ac\u09be\u09b2\u09df\u0964<\/p>\n<p>SQL \u098f\u09b0 \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u0995\u09bf \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0964<br \/>\n\u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u0995\u09bf \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u099f\u09bf \u09a1\u09be\u099f\u09be\u09ac\u09c7\u099c\u09c7\u09b0 \u099f\u09c7\u09ac\u09bf\u09b2\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995\u099f\u09bf Record \u09a4\u09a5\u09be \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u0995\u09c7 \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u09ad\u09be\u09ac\u09c7 \u099a\u09bf\u09a8\u09cd\u09b9\u09bf\u09a4 \u0995\u09b0\u09c7\u0964 \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u0995\u09bf \u0985\u09ac\u09b6\u09cd\u09af\u09df \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u09ae\u09be\u09a8 \u09ac\u09b9\u09a8 \u0995\u09b0\u09c7\u0964 \u098f\u0995\u099f\u09bf primary key \u09b8\u09ae\u09cd\u09ac\u09b2\u09c0\u09a4 \u0995\u09b2\u09be\u09ae\u0995\u09c7 \u0995\u0996\u09a8 \u0993 \u0996\u09be\u09b2\u09bf \u09b0\u09be\u0996\u09be \u0995\u09c7 \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7 \u09a8\u09be\u0964 \u0985\u09a7\u09bf\u0995\u09be\u0982\u09b6 \u099f\u09c7\u09ac\u09bf\u09b2\u0997\u09c1\u09b2\u09cb\u09a4\u09c7 \u098f\u0995\u099f\u09bf primary key \u09a5\u09be\u0995\u09c7 \u098f\u09ac\u0982 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995 \u099f\u09be \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 \u09b6\u09c1\u09a7\u09c1\u09ae\u09be\u09a4\u09cd\u09b0 \u098f\u0995\u099f\u09bf primary key \u09a5\u09be\u0995\u09c7\u0964<br \/>\nSQL \u098f \u098f\u0995\u099f\u09bf \u099f\u09c7\u09ac\u09bf\u09b2 \u09a4\u09c8\u09b0\u09c0\u09a4\u09c7 primary key \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0964<br \/>\n\u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 SQL \u098f Persons \u099f\u09c7\u09ac\u09bf\u09b2 \u09a4\u09c8\u09b0\u09c0\u09a4\u09c7 P_Id \u0995\u09b2\u09be\u09ae\u0995\u09c7 primary key \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09be \u09b9\u09df\u09c7\u099b\u09c7\u0964<br \/>\nMySQL \u098f PRIMARY KEY \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09be\u09b0 \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0964<br \/>\nCREATE TABLE Persons<br \/>\n(<br \/>\nP_Id int NOT NULL,<br \/>\nLastName varchar(255) NOT NULL,<br \/>\nFirstName varchar(255),<br \/>\nAddress varchar(255),<br \/>\nCity varchar(255),<br \/>\nPRIMARY KEY (P_Id)<br \/>\n)<br \/>\n\u0989\u0995\u09cd\u09a4 Persons \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 P_Id \u0995\u09b2\u09be\u09ae\u0995\u09c7 PRIMARY KEY \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09be \u09b9\u09df\u09c7\u099b\u09c7\u0964<br \/>\nSQL Server \/ Oracle \/ MS Access: \u098f PRIMARY KEY \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09be\u09b0 \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0964<br \/>\nCREATE TABLE Persons<br \/>\n(<br \/>\nP_Id int NOT NULL PRIMARY KEY,<br \/>\nLastName varchar(255) NOT NULL,<br \/>\nFirstName varchar(255),<br \/>\nAddress varchar(255),<br \/>\nCity varchar(255)<br \/>\n)<br \/>\n\u0989\u0995\u09cd\u09a4 Persons \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 P_Id \u0995\u09b2\u09be\u09ae\u0995\u09c7 PRIMARY KEY \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09be \u09b9\u09df\u09c7\u099b\u09c7\u0964<br \/>\nPRIMARY KEY \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u09b0 \u09a8\u09be\u09ae\u0995\u09b0\u09a3 \u098f\u09ac\u0982 \u098f\u0995\u09be\u09a7\u09bf\u0995 \u0995\u09b2\u09be\u09ae\u09c7 PRIMARY KEY \u0995\u09c7 \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u0995\u09b0\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 SQL \u09a8\u09bf\u09df\u09ae\u0983<br \/>\nMySQL \/ SQL Server \/ Oracle \/ MS Access: \u098f \u098f\u0995\u09be\u09a7\u09bf\u0995 \u0995\u09b2\u09be\u09ae\u09c7 PRIMARY KEY \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09be\u09b0 \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0964<br \/>\nCREATE TABLE Persons<br \/>\n(<br \/>\nP_Id int NOT NULL,<br \/>\nLastName varchar(255) NOT NULL,<br \/>\nFirstName varchar(255),<br \/>\nAddress varchar(255),<br \/>\nCity varchar(255),<br \/>\nCONSTRAINT pk_PersonID PRIMARY KEY (P_Id,LastName)<br \/>\n)<br \/>\n\u09ac\u09bf\u0983\u09a6\u0983- \u0989\u0995\u09cd\u09a4 Persons \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 \u09ae\u09be\u09a4\u09cd\u09b0 pk_PersonID \u0995\u09b2\u09be\u09ae \u0995\u09c7 PRIMARY KEY \u0995\u09b0\u09be \u09b9\u09df\u09c7\u099b\u09c7 \u09a4\u09a5\u09be\u09aa \u0993 pk_PersonID \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u09ae\u09be\u09a8 \u09a4\u09a5\u09be value \u0995\u09c7 \u09a6\u09c1\u0987\u099f\u09bf \u0995\u09b2\u09be\u09ae\u09c7( P_Id \u0993 LastName) \u09ac\u09bf\u09ad\u0995\u09cd\u09a4 \u0995\u09b0\u09be \u09b9\u09df\u09c7\u099b\u09c7\u0964<br \/>\nSQL \u098f\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09c0\u0995\u09c3\u09a4 \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 PRIMARY KEY \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0983<br \/>\n\u098f\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09c0\u0995\u09c3\u09a4 \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 P_Id \u0995\u09b2\u09be\u09ae\u0995\u09c7 PRIMARY KEY \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u09a4\u09c8\u09b0\u09c0 \u0995\u09b0\u09a4\u09c7 \u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 SQL \u0995\u09ae\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be \u09b9\u09df\u0983<br \/>\nMySQL \/ SQL Server \/ Oracle \/ MS Access: \u098f \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0<br \/>\nALTER TABLE Persons<br \/>\nADD PRIMARY KEY (P_Id)<br \/>\nPRIMARY KEY \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u09b0 \u09a8\u09be\u09ae\u0995\u09b0\u09a3 \u098f\u09ac\u0982 \u098f\u0995\u09be\u09a7\u09bf\u0995 \u0995\u09b2\u09be\u09ae\u09c7 PRIMARY KEY \u0995\u09c7 \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u0995\u09b0\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 SQL \u09a8\u09bf\u09df\u09ae \u0983<br \/>\nALTER TABLE Persons<br \/>\nADD CONSTRAINT pk_PersonID PRIMARY KEY (P_Id,LastName)<\/p>\n<p>\u09ac\u09bf\u0983\u09a6\u0983- \u09af\u09a6\u09bf \u09a4\u09c1\u09ae\u09bf \u098f\u0995\u099f\u09bf \u09a4\u09c8\u09b0\u09c0\u0995\u09c3\u09a4 \u099f\u09c7\u09ac\u09bf\u09b2 \u09b9\u09a4\u09c7 \u0985\u09a8\u09cd\u09af \u098f\u0995\u099f\u09bf \u099f\u09c7\u09ac\u09bf\u09b2 \u09a4\u09c8\u09b0\u09c0\u09a4\u09c7 \u098f\u0995\u099f\u09bf primary key \u09b8\u0982\u09af\u09cb\u0997 \u0995\u09b0\u09a4\u09c7 \u099a\u09be\u0993 \u09a4\u09ac\u09c7 \u0985\u09ac\u09b6\u09cd\u09af\u0987 primary key \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0998\u09cb\u09b7\u09bf\u09a4 \u0995\u09b2\u09be\u09ae\u099f\u09bf\u0995\u09c7 \u0995\u09bf\u099b\u09c1 \u09a8\u09be \u09a6\u09bf\u09df\u09c7 \u0996\u09be\u09b2\u09c0 \u09b0\u09be\u0996\u09be \u09af\u09be\u09ac\u09c7 \u09a8\u09be \u09ae\u09b0\u09cd\u09ae\u09c7 \u0989\u09b2\u09cd\u09b2\u09c7\u0996 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7(\u098f\u099f\u09be \u09aa\u09cd\u09b0\u09a5\u09ae \u099f\u09c7\u09ac\u09bf\u09b2 \u09a4\u09c8\u09b0\u09c0\u09a4\u09c7)\u0964<br \/>\nPRIMARY KEY \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0995\u09c7 \u09ac\u09be\u09a6 \u09a6\u09c7\u09df\u09be\u0983<br \/>\n\u098f\u0995\u099f\u09bf PRIMARY KEY \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0995\u09c7 \u09ac\u09be\u09a6 \u09a6\u09bf\u09a4\u09c7 \u09b9\u09b2\u09c7 \u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 SQL \u0995\u09ae\u09be\u09a8\u09cd\u09a1 \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09df\u0964<br \/>\nMySQL: \u098f \u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 \u0995\u09ae\u09be\u09a8\u09cd\u09a1<br \/>\nALTER TABLE Persons<br \/>\nDROP PRIMARY KEY<\/p>\n<p>SQL Server \/ Oracle \/ MS Access: \u098f \u09a8\u09bf\u09a8\u09cd\u09ae\u09cb\u0995\u09cd\u09a4 \u0995\u09ae\u09be\u09a8\u09cd\u09a1<br \/>\nALTER TABLE Persons<br \/>\nDROP CONSTRAINT pk_PersonID<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL \u098f\u09b0 PRIMARY KEY \u09a4\u09a5\u09be \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u099a\u09be\u09ac\u09bf \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0964 \u09ab\u09be\u099b\u09bf\u09b9\u09c1\u09b0 \u09b0\u09b9\u09ae\u09be\u09a8\u0964 MSCSE From Royal University of Dhaka. \u099f\u09c7\u0995\u09a8\u09bf\u0995\u09cd\u09af\u09be\u09b0 \u098f\u0995\u09cd\u09b8\u09aa\u09be\u09b0\u09cd\u099f, \u09ac\u09be\u0982\u09b2\u09be\u09a6\u09c7\u09b6 \u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a8 \u0995\u09ae\u09bf\u09b6\u09a8 \u09b8\u099a\u09bf\u09ac\u09be\u09b2\u09df\u0964 SQL \u098f\u09b0 \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u0995\u09bf \u098f\u09b0 \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u0964 \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u0995\u09bf \u09ac\u09be\u09a7\u09cd\u09af\u09ac\u09be\u09a6\u0995\u09a4\u09be\u099f\u09bf \u09a1\u09be\u099f\u09be\u09ac\u09c7\u099c\u09c7\u09b0 \u099f\u09c7\u09ac\u09bf\u09b2\u09c7\u09b0 \u09aa\u09cd\u09b0\u09a4\u09cd\u09af\u09c7\u0995\u099f\u09bf Record \u09a4\u09a5\u09be \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u0995\u09c7 \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u09ad\u09be\u09ac\u09c7 \u099a\u09bf\u09a8\u09cd\u09b9\u09bf\u09a4 \u0995\u09b0\u09c7\u0964 \u09aa\u09cd\u09b0\u09be\u09a5\u09ae\u09bf\u0995 \u0995\u09bf \u0985\u09ac\u09b6\u09cd\u09af\u09df \u09a8\u09bf\u09b0\u09cd\u09a6\u09bf\u09b7\u09cd\u099f \u09ae\u09be\u09a8 \u09ac\u09b9\u09a8 \u0995\u09b0\u09c7\u0964 \u098f\u0995\u099f\u09bf primary key \u09b8\u09ae\u09cd\u09ac\u09b2\u09c0\u09a4 \u0995\u09b2\u09be\u09ae\u0995\u09c7 \u0995\u0996\u09a8 &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"http:\/\/bangla.sitestree.com\/?p=5951\">Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[155],"tags":[],"class_list":["post-5951","post","type-post","status-publish","format-standard","hentry","category------sql-001","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":5931,"url":"http:\/\/bangla.sitestree.com\/?p=5931","url_meta":{"origin":5951,"position":0},"title":"SQL \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf Constraint . SQL Primary Key Constraint","author":"Author-Check- Article-or-Video","date":"January 30, 2015","format":false,"excerpt":"SQL \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf Constraint RIAZ-UL-HAQUE MIAN \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf Constraint \u098f\u0995\u099f\u09bf \u099f\u09c7\u09ac\u09bf\u09b2 \u098f\u09b0 \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u098f\u0995\u099f\u09bf \u0995\u09b2\u09be\u09ae \u098f\u09b0 \u09b8\u09cd\u09ac\u09a4\u09a8\u09cd\u09a4\u09cd\u09b0\u09a4\u09be\/ uniqueness \u0995\u09c7 \u09ac\u09c1\u099d\u09be\u09df . \u099f\u09c7\u09ac\u09bf\u09b2 \u098f\u09b0 \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf \u0995\u09bf \u0985\u09ac\u09b6\u0987 \u0987\u0989\u09a8\u09bf\u0995 \u09b9\u09a4\u09c7 \u09b9\u09ac\u09c7 \u098f\u09ac\u0982 NULL \u09b9\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7\u09a8\u09be . \u09aa\u09cd\u09b0\u09a4\u09bf\u099f\u09be \u099f\u09c7\u09ac\u09bf\u09b2 \u098f \u0987 \u098f\u0995\u099f\u09be \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf key \u09a5\u09be\u0995\u09be \u0989\u099a\u09c0\u09a0 \u098f\u0995\u099f\u09be \u099f\u09c7\u09ac\u09bf\u09b2 \u098f\u09b0 \u098f\u0995\u099f\u09be \u09ae\u09be\u09a4\u09cd\u09b0 \u0995\u09b2\u09be\u09ae \u0995\u09c7 \u0987 \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf\u2026","rel":"","context":"In &quot;\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001&quot;","block_context":{"text":"\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001","link":"http:\/\/bangla.sitestree.com\/?cat=155"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5949,"url":"http:\/\/bangla.sitestree.com\/?p=5949","url_meta":{"origin":5951,"position":1},"title":"SQL \u0987\u0989\u09a8\u09bf\u0995 Constraint  . SQL Unique Constraint","author":"Author-Check- Article-or-Video","date":"January 30, 2015","format":false,"excerpt":"SQL \u0987\u0989\u09a8\u09bf\u0995 Constraint RIAZ-UL-HAQUE MIAN \u0987\u0989\u09a8\u09bf\u0995 Constraint \u098f\u0995\u099f\u09bf \u099f\u09c7\u09ac\u09bf\u09b2 \u098f\u09b0 \u09af\u09c7\u0995\u09cb\u09a8\u09cb \u098f\u0995\u099f\u09bf \u0995\u09b2\u09be\u09ae \u098f\u09b0 \u09b8\u09cd\u09ac\u09a4\u09a8\u09cd\u09a4\u09cd\u09b0\u09a4\u09be\/ uniqueness \u0995\u09c7 \u09ac\u09c1\u099d\u09be\u09df . \u099f\u09c7\u09ac\u09bf\u09b2 \u098f\u09b0 \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf \u0995\u09bf \u09b8\u09c7\u099f \u0995\u09b0\u09b2\u09c7 \u09a4\u09be automatically \u0987\u0989\u09a8\u09bf\u0995 Constraint \u09b9\u09df\u09c7 \u09af\u09be\u09df\u0964 \u09a4\u09be\u09b9\u09b2\u09c7 \u09aa\u09cd\u09b0\u09b6\u09cd\u09a8 \u09b9\u09b2\u09cb \u0987\u0989\u09a8\u09bf\u0995 Constraint \u09a6\u09b0\u0995\u09be\u09b0 \u0995\u09bf ? \u0995\u09be\u09b0\u09a3 \u0986\u09aa\u09a8\u09bf \u098f\u0995\u099f\u09be \u099f\u09c7\u09ac\u09bf\u09b2 \u098f\u09b0 \u098f\u0995\u099f\u09be \u09ae\u09be\u09a4\u09cd\u09b0 \u0995\u09b2\u09be\u09ae \u0995\u09c7 \u0987 \u09aa\u09cd\u09b0\u09be\u0987\u09ae\u09be\u09b0\u09bf\u2026","rel":"","context":"In &quot;\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001&quot;","block_context":{"text":"\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001","link":"http:\/\/bangla.sitestree.com\/?cat=155"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5903,"url":"http:\/\/bangla.sitestree.com\/?p=5903","url_meta":{"origin":5951,"position":2},"title":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) Joins","author":"Author-Check- Article-or-Video","date":"January 30, 2015","format":false,"excerpt":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) UNIQUE \u0995\u09a8\u09b8\u09cd\u099f\u09cd\u09b0\u09c7\u0987\u09a8\u09cd\u099f Author: Protap Chandra | sincerely.yours2512[at]gmail.com UNIQUE \u0985\u09b0\u09cd\u09a5 \u0985\u09a8\u09a8\u09cd\u09af \u09ac\u09be \u0985\u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df\u0964 \u0985\u09b0\u09cd\u09a5\u09be\u09a4 \u098f\u0995\u0987 \u099c\u09bf\u09a8\u09bf\u09b8 \u09a6\u09c1\u099f\u09bf \u09b9\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7 \u09a8\u09be\u0964 \u098f\u0995\u099f\u09bf \u09a1\u09be\u099f\u09be\u09ac\u09c7\u099c \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 \u0987\u0989\u09a8\u09bf\u0995 \u09a1\u09be\u099f\u09be \u09b8\u09cd\u099f\u09cb\u09b0 \u0995\u09b0\u09be \u09b9\u09df \u09a1\u09be\u099f\u09be \u09b8\u09be\u09b0\u09cd\u099a \u0995\u09b0\u09be\u09b0 \u09b8\u09ae\u09df \u09ac\u09bf\u09ad\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09bf \u098f\u09dc\u09be\u09a4\u09c7\u0964 \u09af\u09c7 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u0987\u0989\u09a8\u09bf\u0995 \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0998\u09cb\u09b7\u09a3\u09be \u0995\u09b0\u09be \u09b9\u09ac\u09c7 \u09b8\u09c7\u0987 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0 \u09b8\u0999\u09cd\u0997\u09c7 \u0985\u09a8\u09cd\u09af \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0\u2026","rel":"","context":"In &quot;\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001&quot;","block_context":{"text":"\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001","link":"http:\/\/bangla.sitestree.com\/?cat=155"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5892,"url":"http:\/\/bangla.sitestree.com\/?p=5892","url_meta":{"origin":5951,"position":3},"title":"SQL LIKE (\u09b2\u09be\u0987\u0995) Operator (\u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0) . SQL Like Operator","author":"Author-Check- Article-or-Video","date":"January 31, 2015","format":false,"excerpt":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) UNIQUE \u0995\u09a8\u09b8\u09cd\u099f\u09cd\u09b0\u09c7\u0987\u09a8\u09cd\u099f Author: Protap Chandra | sincerely.yours2512[at]gmail.com UNIQUE \u0985\u09b0\u09cd\u09a5 \u0985\u09a8\u09a8\u09cd\u09af \u09ac\u09be \u0985\u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df\u0964 \u0985\u09b0\u09cd\u09a5\u09be\u09a4 \u098f\u0995\u0987 \u099c\u09bf\u09a8\u09bf\u09b8 \u09a6\u09c1\u099f\u09bf \u09b9\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7 \u09a8\u09be\u0964 \u098f\u0995\u099f\u09bf \u09a1\u09be\u099f\u09be\u09ac\u09c7\u099c \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 \u0987\u0989\u09a8\u09bf\u0995 \u09a1\u09be\u099f\u09be \u09b8\u09cd\u099f\u09cb\u09b0 \u0995\u09b0\u09be \u09b9\u09df \u09a1\u09be\u099f\u09be \u09b8\u09be\u09b0\u09cd\u099a \u0995\u09b0\u09be\u09b0 \u09b8\u09ae\u09df \u09ac\u09bf\u09ad\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09bf \u098f\u09dc\u09be\u09a4\u09c7\u0964 \u09af\u09c7 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u0987\u0989\u09a8\u09bf\u0995 \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0998\u09cb\u09b7\u09a3\u09be \u0995\u09b0\u09be \u09b9\u09ac\u09c7 \u09b8\u09c7\u0987 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0 \u09b8\u0999\u09cd\u0997\u09c7 \u0985\u09a8\u09cd\u09af \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0\u2026","rel":"","context":"In &quot;\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001&quot;","block_context":{"text":"\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001","link":"http:\/\/bangla.sitestree.com\/?cat=155"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5899,"url":"http:\/\/bangla.sitestree.com\/?p=5899","url_meta":{"origin":5951,"position":4},"title":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) SELECT TOP \u0995\u09cd\u09b2\u099c . SQL SELECT TOP Clause","author":"Author-Check- Article-or-Video","date":"January 30, 2015","format":false,"excerpt":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) UNIQUE \u0995\u09a8\u09b8\u09cd\u099f\u09cd\u09b0\u09c7\u0987\u09a8\u09cd\u099f Author: Protap Chandra | sincerely.yours2512[at]gmail.com UNIQUE \u0985\u09b0\u09cd\u09a5 \u0985\u09a8\u09a8\u09cd\u09af \u09ac\u09be \u0985\u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df\u0964 \u0985\u09b0\u09cd\u09a5\u09be\u09a4 \u098f\u0995\u0987 \u099c\u09bf\u09a8\u09bf\u09b8 \u09a6\u09c1\u099f\u09bf \u09b9\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7 \u09a8\u09be\u0964 \u098f\u0995\u099f\u09bf \u09a1\u09be\u099f\u09be\u09ac\u09c7\u099c \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 \u0987\u0989\u09a8\u09bf\u0995 \u09a1\u09be\u099f\u09be \u09b8\u09cd\u099f\u09cb\u09b0 \u0995\u09b0\u09be \u09b9\u09df \u09a1\u09be\u099f\u09be \u09b8\u09be\u09b0\u09cd\u099a \u0995\u09b0\u09be\u09b0 \u09b8\u09ae\u09df \u09ac\u09bf\u09ad\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09bf \u098f\u09dc\u09be\u09a4\u09c7\u0964 \u09af\u09c7 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u0987\u0989\u09a8\u09bf\u0995 \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0998\u09cb\u09b7\u09a3\u09be \u0995\u09b0\u09be \u09b9\u09ac\u09c7 \u09b8\u09c7\u0987 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0 \u09b8\u0999\u09cd\u0997\u09c7 \u0985\u09a8\u09cd\u09af \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0\u2026","rel":"","context":"In &quot;\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001&quot;","block_context":{"text":"\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - \u09e6\u09e6\u09e7 \u0964 SQL - 001","link":"http:\/\/bangla.sitestree.com\/?cat=155"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":5901,"url":"http:\/\/bangla.sitestree.com\/?p=5901","url_meta":{"origin":5951,"position":5},"title":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) BETWEEN \u0985\u09aa\u09be\u09b0\u09c7\u099f\u09b0: SQL BETWEEN Operator","author":"Author-Check- Article-or-Video","date":"January 30, 2015","format":false,"excerpt":"SQL (\u098f\u09b8\u0995\u09bf\u0989\u098f\u09b2) UNIQUE \u0995\u09a8\u09b8\u09cd\u099f\u09cd\u09b0\u09c7\u0987\u09a8\u09cd\u099f Author: Protap Chandra | sincerely.yours2512[at]gmail.com UNIQUE \u0985\u09b0\u09cd\u09a5 \u0985\u09a8\u09a8\u09cd\u09af \u09ac\u09be \u0985\u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df\u0964 \u0985\u09b0\u09cd\u09a5\u09be\u09a4 \u098f\u0995\u0987 \u099c\u09bf\u09a8\u09bf\u09b8 \u09a6\u09c1\u099f\u09bf \u09b9\u09a4\u09c7 \u09aa\u09be\u09b0\u09ac\u09c7 \u09a8\u09be\u0964 \u098f\u0995\u099f\u09bf \u09a1\u09be\u099f\u09be\u09ac\u09c7\u099c \u099f\u09c7\u09ac\u09bf\u09b2\u09c7 \u0987\u0989\u09a8\u09bf\u0995 \u09a1\u09be\u099f\u09be \u09b8\u09cd\u099f\u09cb\u09b0 \u0995\u09b0\u09be \u09b9\u09df \u09a1\u09be\u099f\u09be \u09b8\u09be\u09b0\u09cd\u099a \u0995\u09b0\u09be\u09b0 \u09b8\u09ae\u09df \u09ac\u09bf\u09ad\u09cd\u09b0\u09be\u09a8\u09cd\u09a4\u09bf \u098f\u09dc\u09be\u09a4\u09c7\u0964 \u09af\u09c7 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u09a1\u09be\u099f\u09be \u0987\u0989\u09a8\u09bf\u0995 \u09b9\u09bf\u09b8\u09c7\u09ac\u09c7 \u0998\u09cb\u09b7\u09a3\u09be \u0995\u09b0\u09be \u09b9\u09ac\u09c7 \u09b8\u09c7\u0987 \u0995\u09b2\u09be\u09ae\u09c7\u09b0 \u098f\u0995\u099f\u09bf \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0 \u09b8\u0999\u09cd\u0997\u09c7 \u0985\u09a8\u09cd\u09af \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09c7\u09b0\u2026","rel":"","context":"In &quot;\u098f\u09b8 \u0995\u09bf\u0989 \u098f\u09b2 - 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