what are the nonstandard string types? : Sql dba

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Suppose There is a string A.B....C.......D.........E........F In this string dots (.) are not having fixed count in between of string. I want the output to have string with one dot between. I.e. A.B.C.D.E.F

6 Answers   IBM,

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What is coalesce in sql?

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What is sql table?

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how can i read files from a pl/sq l program

3 Answers  

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How to write a query to show the details of a student from students table whose

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How many types of functions are there in sql?

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How do you take the union of two tables in sql?

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What are different joins used in sql?

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IN A TABLE HAVE ONE COLUMN PRIMARY KEY..IT WILL NOT ALLOWS NULL VALUES AND DUPLICATE VALUES..INSTEAD OF PRIMARY KEY WHY CANT WE USE UNIQUE AND NOT NULL.THESE TWO ALSO DOESNT ACCEPT NULL VALUES IN NOT NULL AND UNIQUE DOESNT ACCEPT DUPLICATE VALUES? SO WHAT IS THE DIFEERENCE BETWEEN(UNIQUE,NOT NULL) AND PRIMARY KEY??????

8 Answers   rsystems,

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What is clustered and non-clustered indexes?

4 Answers   Microsoft,

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When should I use nosql database?

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