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how to get list of tables in oracle sql

Database A database is an organized collection of data. Table: A table in SQL is a set of data which is systematically displayed in rows and columns.… Read More
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how to view index in oracle sql?

An index represents a schema object that contains an entry for each value that appears in the indexed column(s) of the table or cluster and provides direct,… Read More
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how to create index in oracle sql?

An index represents a schema object that contains an entry for each value that appears in the indexed column(s) of the table or cluster and provides direct,… Read More
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What are Indexes in SQL?

An index represents a schema object that contains an entry for each value that appears in the indexed column(s) of the table or cluster and provides direct,… Read More
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what do you mean by subquery?

A subquery refers to a select statement that is embedded in a clause of another select statement. Syntax SELECT columnName1, columnName2 FROM tableName1, tableName2 WHERE columnName OPERATOR… Read More
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what is the use of nvl function in sql?

The nvl() function return an alternative value when an expression is NULL. Syntax: NVL(string, replaceWith) Where: string : represents the string to test for a null value.… Read More
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