Sql updating one table from another
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Each key is unique, and is used to locate the corresponding value. Using a key-value pair for the first time adds that pair to the associative array.
Using the same key with a different value changes the value.
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This chapter explains how to create and use PL/SQL collection and record variables.
What is the syntax of the SQL UPDATE statement to update field values from one table to another?The WHERE clause ensures that only rows updated in the Customer table are those that have related fields in my Customer: Disclaimer The origins of the information on this site may be internal or external to Progress Software Corporation (“Progress”).Progress Software Corporation makes all reasonable efforts to verify this information.To create a collection or record variable, you first define a collection or record type, and then you declare a variable of that type. A collection that is created in a PL/SQL block (with the syntax in Collection) is available only in that block.
A nested table type or varray type that is created at schema level (with the CREATE TYPE Statement) is stored in the database, and you can manipulate it with SQL statements.These composite variables have internal components that you can treat as individual variables.