Explain the types of joins in sql?

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Does mysql_real_escape_string prevent sql injection?

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How do I run a sql query in pgadmin 4?

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What is keys and its types?

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Which are the different character-manipulation functions in sql?

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what is a relationship and what are they? : Sql dba

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Why do we use sql constraints? Which constraints we can use while creating database in sql?

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can sql servers linked to other servers like oracle? : Sql dba

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Can we connect to postgresql using sql developer?

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i hv 30 rows with date.ex:1month hav 4 weeks i want 1st day of the every week.write the qry for that.example jan has 4 weeks i need 1st dd for evry wk

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What are the subsets of sql?

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Can there be 2 primary keys in a table?

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