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SQLize.online is a free online SQL environment for quickly running, experimenting with and sharing code.
You can run your SQL code on top of the most popular RDBMS including MySQL, MariaDB, SQLite, PostgreSQL, Oracle and Microsoft SQL Server.
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with transaction as ( select 1 id, to_date('23-05-2022', 'dd-mm-yyyy') transaction_date, 33 client_id, 'EURO' currency, 259 amount from dual union all select 2 id, to_date('24-05-2022', 'dd-mm-yyyy') transaction_date, 34 client_id, 'USD' currency, 300 amount from dual union all select 3 id, to_date('25-05-2022', 'dd-mm-yyyy') transaction_date, 34 client_id, 'RUR' currency, 5000 amount from dual union all select 4 id, to_date('25-05-2022', 'dd-mm-yyyy') transaction_date, 34 client_id, 'EURO' currency, 50 amount from dual union all select 4 id, to_date('26-05-2022', 'dd-mm-yyyy') transaction_date, 34 client_id, 'EURO' currency, 50 amount from dual union all select 4 id, to_date('27-05-2022', 'dd-mm-yyyy') transaction_date, 34 client_id, 'EURO' currency, 50 amount from dual ), currency as ( select 1 id, to_date('23-05-2022', 'dd-mm-yyyy') currency_date, 'EURO' currency, 69.0 VALUE from dual union all select 2 id, to_date('23-05-2022', 'dd-mm-yyyy') currency_date, 'USD' currency, 60 VALUE from dual union all select 3 id, to_date('24-05-2022', 'dd-mm-yyyy') currency_date, 'EURO' currency, 70 VALUE from dual union all select 4 id, to_date('24-05-2022', 'dd-mm-yyyy') currency_date, 'USD' currency, 59.5 VALUE from dual union all select 5 id, to_date('27-05-2022', 'dd-mm-yyyy') currency_date, 'EURO' currency, 71 VALUE from dual) , dates as ( select distinct transaction_date, currency from transaction) select d.transaction_date, d.currency, c.value, coalesce(c.value, (SELECT fc.value FROM currency fc WHERE fc.currency = d.currency AND fc.currency_date <= d.transaction_date ORDER BY fc.currency_date DESC FETCH FIRST 1 ROW ONLY)) as value from dates d left join currency c on d.transaction_date = c.currency_date and d.currency = c.currency order by transaction_date, currency
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MySQL 5.7
MySQL 5.7 Sakila (ReadOnly)
MySQL 8.0
MySQL 8.0 Sakila (ReadOnly)
MariaDB 11.5
SQLite 3
SQLite 3 Preloaded
PostgreSQL 10 Bookings (ReadOnly)
PostgreSQL 11
PostgreSQL 12
PostgreSQL 13
PostgreSQL 14
PostgreSQL 15
MS SQL Server 2017
MS SQL Server 2019
MS SQL Server 2022
MS SQL Server 2022 AdventureWorks (ReadOnly)
Firebird 4.0
Firebird 4.0 (Employee)
Oracle Database 19c (HR)
Oracle Database 21c
Oracle Database 23c Free
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