dubai beach and burj al khalifa visit by khushboo laghari
dubai beach and burj al khalifa visit by khushboo laghari
sql joins
ASQL Join is an instruction to combine data from two sets of data (tables). SQL is a special-purpose programming language designed for managing information in a relational database management system (RDBMS). The word relational here is key; it specifies that the database management system is organized in such a way that there are clear relations defined between different sets of data. (sql jons description courtesy of sql-joins ) Different Types of SQL JOINs: (INNER) JOIN: Returns records that have matching values in both tables LEFT (OUTER) JOIN: Return all records from the left table, and the matched records from the right table RIGHT (OUTER) JOIN: Return all records from the right table, and the matched records from the left table FULL (OUTER) JOIN: Return all records when there is a match in either left or right table image courtesy of imgur
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