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6 paź 2015 · I need to convert a varchar value of 1/9/2011 to a date in mySQL and I want only the month and year. So that I can then use the PERIOD_DIFF function (so I would need the above to be converted to 201101). I've tried various ways using the STR_TO_DATE function: SELECT STR_TO_DATE(CYOApp_oilChangedDate, '%m/%Y') FROM CYO_AppInfo But I get weird ...
29 sie 2017 · Definition and Usage. The CONVERT () function converts a value into the specified datatype or character set. Tip: Also look at the CAST () function. Syntax. CONVERT (value, type) OR: CONVERT (value USING charset) Parameter Values. Technical Details. More Examples. Example. Convert a value to a CHAR datatype: SELECT CONVERT(150, CHAR);
16 sty 2020 · When you change a column from VARCHAR to DATETIME, there's no way for you to specify custom parsing of the string, it has to be in MySQL's default format. So you'll need to do this in multiple steps: Add a DATETIME column. Fill in the new column by parsing the VARCHAR column with STR_TO_DATE() Remove the old column and rename the new column.
26 sty 2024 · The most straightforward function for converting a string to a date or date/time in MySQL is the STR_TO_DATE() function. It takes a string and a format specifier and returns a formatted date: SELECT STR_TO_DATE('2021-04-30', '%Y-%m-%d') AS formatted_date; Output: 2021-04-30.
To compare the operands as DATETIME values, use CAST() to explicitly convert the subquery value to DATETIME. If one of the arguments is a decimal value, comparison depends on the other argument.
Conversion of DATETIME and TIMESTAMP values: Conversion to a DATE value takes fractional seconds into account and rounds the time part. For example, '1999-12-31 23:59:59.499' becomes '1999-12-31' , whereas '1999-12-31 23:59:59.500' becomes '2000-01-01' .
SELECT CONVERT('test' USING utf8mb4); SELECT CONVERT(_latin1'Müller' USING utf8mb4); INSERT INTO utf8mb4_table (utf8mb4_column) SELECT CONVERT(latin1_column USING utf8mb4) FROM latin1_table; To convert strings between character sets, you can also use CONVERT( expr , type ) syntax (without USING ), or CAST( expr AS type ) , which is equivalent:
