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How the sql statement is processed?
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Answer / Sandeep Tiwari
In SAP HANA, SQL statements are processed in several stages: Parsing, Optimization, Execution, and Result Set Management. During parsing, the SQL statement is analyzed for syntax errors and translated into an internal data structure. In the optimization phase, the query is optimized to choose the best possible execution plan based on statistical data about the database tables and their contents. The execution phase involves executing the chosen execution plan, which could include reading data from the database, joining tables, applying filters, aggregations, or sorting. Finally, the result set management phase handles the formatting of the results and sending them back to the client.
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