How to save temporary session variables in postgresql?

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by jerad , in category: MySQL , 5 months ago

How to save temporary session variables in postgresql?

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1 answer

by cortez.connelly , 5 months ago

@jerad 

One way to save temporary session variables in PostgreSQL is to use the SET command within a transaction block. Here's an example of how to do this:


Begin a transaction block:

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BEGIN;


Set a temporary session variable:

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SET my_variable = 'value';


You can now use this variable within the transaction block. Once the transaction is committed or rolled back, the temporary session variable will be discarded.


Commit the transaction block:

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COMMIT;


If you want to use the temporary session variable across multiple transaction blocks, you can store it in a temporary table instead. Here's an example:


Create a temporary table to store the session variable:

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CREATE TEMP TABLE my_temp_table (
    my_variable TEXT
);


Insert the session variable into the temporary table:

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INSERT INTO my_temp_table VALUES ('value');


You can now retrieve the session variable from the temporary table in subsequent transaction blocks. Remember to drop the temporary table once it's no longer needed.


Drop the temporary table:

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DROP TABLE my_temp_table;