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To convert a DATE column to another format, just use TO_CHAR() with the desired format, then convert it back to a DATE type: SELECT TO_DATE(TO_CHAR(date_column, 'DD-MM-YYYY'), 'DD-MM-YYYY') from my_table
Here is an example: UPDATE items,month SET items.price=month.price WHERE items.id=month.id; The preceding example shows an inner join that uses the comma operator, but multiple-table UPDATE statements can use any type of join permitted in SELECT statements, such as LEFT JOIN.
1 Ιαν 2018 · Just use LEFT JOIN + DATE_FORMAT: SELECT t2.Day, t1.Month, t1.Value1, t2.Value2 FROM Table2 t2 LEFT JOIN Table1 t1 ON DATE_FORMAT(t2.Day, '%Y-%m-01') = t1.Month http://www.sqlfiddle.com/#!9/920c79/1
This tutorial shows you how to perform cross-table updates by using the MySQL UPDATE JOIN statement with the INNER JOIN or LEFT JOIN clause.
31 Δεκ 1999 · Oracle Date Format. Summary: in this tutorial, you will learn about the Oracle date format and various format elements for formatting date data. Introduction to Oracle Date Format Model. Oracle Database uses an internal format for storing DATE data.
Here is an example: UPDATE items,month SET items.price=month.price WHERE items.id=month.id; The preceding example shows an inner join that uses the comma operator, but multiple-table UPDATE statements can use any type of join permitted in SELECT statements, such as LEFT JOIN.
DATE_FORMAT() returns a string with a character set and collation given by character_set_connection and collation_connection so that it can return month and weekday names containing non-ASCII characters.
