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TO_CHAR - Convert Datetime to String - Oracle to SQL Server Migration. In Oracle, TO_CHAR function converts a datetime value (DATE, TIMESTAMP data types i.e.) to a string using the specified format. In SQL Server, you can use CONVERT or CAST functions to convert a datetime value (DATETIME, DATETIME2 data types i.e.) to a string. Oracle:
When you convert to date and time data types, SQL Server rejects all values it cannot recognize as dates or times. For information about using the CAST and CONVERT functions with date and time data, see CAST and CONVERT (Transact-SQL) . Converting datetime to Other Date and Time Types.The following table describes what occurs when a datetime data type is converted to other date and time data types.Data type to convert to.Conversion details. date. The year month and day are copied. The time component is set to 00:00:00.000. The following code shows the results of converting a date value to a datetime value.ata type to convert to. Conversion details. date. The year month and day are copied. The time component is set to 00:00:00.000. The following code shows the results of converting a date value to a datetime value.