What is the PostgreSQL call to remove an whole object from a JSONB array of Objects
来源： https://stackoverflow.com/questions/62458093/what-is-the-postgresql-call-to-remove-an-whole-object-from-a-jsonb-array-of-obje
delete-record
What is the PostgreSQL call to remove an whole object from a JSONB array of Objects
来源： https://stackoverflow.com/questions/62458093/what-is-the-postgresql-call-to-remove-an-whole-object-from-a-jsonb-array-of-obje
What is the PostgreSQL call to remove an whole object from a JSONB array of Objects
来源： https://stackoverflow.com/questions/62458093/what-is-the-postgresql-call-to-remove-an-whole-object-from-a-jsonb-array-of-obje
Error while deleting record from database
问题 I need some help with delete record from database. I am trying to delete a record from a table in my SQL Server database. Am I missing something? Private Sub cmdDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdDelete.Click _DataSet.Tables(0).Rows(CInt(txtCurrent.Text) - 1).Delete() ' tho, it can remove the deleted rows ' we cannot call the DataSet.AcceptChanges method ' because the DataAdapter would not recognize the delete row ' by the time DataAdapter
Delete multiple records from a table using subsonic T4 templates?
问题 Using templates, how can I delete multiple records from a table in same Delete statement? 回答1: Your question's a bit ambiguous but based on another question you've posted I think you're trying to delete based on a list of Ids or something similar. You can do that using a fluent query as follows: List<int> peopleIds = new List<int> { 121, 122, 35, 4 }; new SubSonic.Query.Delete<Person>(new MyDB().Provider) .Where(PersonTable.IdColumn).In(peopleIds) .Execute(); 来源： https://stackoverflow.com
How to delete all records in a table using SubSonic 3
问题 I'm trying to delete all the records from a table using this approach: new Delete<Contact>().Execute(); This statement fails with a NullReferenceException in BuildDeleteStatement method at line: sb.Append(query.FromTables[0].QualifiedName); Because, although FromTables has one entry, it is set to null. I also tried this but it doesn't worked either: var provider = ProviderFactory.GetProvider("MonitorData"); new Delete<Contact>(provider).Execute(); What am I doing wrong? 回答1: You can do this
How to delete all records created today?
问题 I am dealing with a very big database ~ 6 Million records. I've added ~30,000 bad records today. How can I delete all of the records created today in MySQL? 回答1: It seems created_at is a datetime. Try: delete from table where date(created_at) = curdate() Of course, run a select * prior to run this query and make sure the data you're going to delete is the one you really want to delete. 回答2: DELETE FROM Table WHERE ( (DAY(CallDate) = DAY(GETDATE()) AND (MONTH(CallDate) = MONTH(GETDATE()) AND
How to delete all records created today?
I am dealing with a very big database ~ 6 Million records. I've added ~30,000 bad records today. How can I delete all of the records created today in MySQL? It seems created_at is a datetime. Try: delete from table where date(created_at) = curdate() Of course, run a select * prior to run this query and make sure the data you're going to delete is the one you really want to delete. DELETE FROM Table WHERE ( (DAY(CallDate) = DAY(GETDATE()) AND (MONTH(CallDate) = MONTH(GETDATE()) AND (YEAR(CallDate) = YEAR(GETDATE()) ) Try below: delete from table where left(created_at,10) =curdate() The
What's the most efficient/elegant way to delete elements from a matrix in MATLAB?
I want to delete several specific values from a matrix (if they exist). It is highly probable that there are multiple copies of the values in the matrix. For example, consider an N-by-2 matrix intersections . If the pairs of values [a b] and [c d] exist as rows in that matrix, I want to delete them. Let's say I want to delete rows like [-2.0 0.5] and [7 7] in the following matrix: intersections = -4.0000 0.5000 -2.0000 0.5000 2.0000 3.0000 4.0000 0.5000 -2.0000 0.5000 So that after deletion I get: intersections = -4.0000 0.5000 2.0000 3.0000 4.0000 0.5000 What's the most efficient/elegant way