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12 sty 2020 · It appears that for a DATE or DATETIME field, an empty value cannot be inserted. I got around this by first checking for an empty value (mydate = "") and if it was empty setting mydate = "NULL" before insert.
3 kwi 2017 · How can I check if a Date field is empty or blank? I tried this statement: if(project.Current_Launch_Date__c==null) But I don't get the desired result, even if I delete the date value, it still d...
8 paź 2005 · You can specify date values or date literals in WHERE clauses to filter SOQL query results. Dates represent a specific day or time, while date literals represent a relative range of time, such as last month, this week, or next year.
SQL Server comes with the following data types for storing a date or a date/time value in the database: DATE - format YYYY-MM-DD. DATETIME - format: YYYY-MM-DD HH:MI:SS. SMALLDATETIME - format: YYYY-MM-DD HH:MI:SS. TIMESTAMP - format: a unique number.
17 lis 2015 · You can't get an empty string because you're returning the DATE value type from ISNULL. Per the docs, ISNULL. Returns the same type as check_expression. If a literal NULL is provided as check_expression, returns the datatype of the replacement_value.
19 sty 2001 · SQL Server DATE and DATETIME data types store date and time values in a table. However, managing these values can become difficult sometimes, especially if the value saved is 1900-01-01. Moreover, we cannot show or display these figures anywhere, since it can be misleading.
26 kwi 2011 · SOQL has support for NULL values, so you should be able to query as you do with regular SQL. For example: SELECT column FROM table WHERE date_field = NULL Notice the use of = NULL instead of IS NULL as you would find in SQL.
