Sql updating multiple rows based on a select statement dating someone with opposite political beliefs

22-Jun-2019 06:52

Thanks for being a member of the Ask TOM community. This year we've answered over 2800 of your questions and followed up on 3500 reviews. Hi Tom, Due to migration to new system we have to change all our account numbers. June 28, 2005 - pm UTC yes, the predicate in the join for the fictional question without a sample table and data was wrong (everytime I wing it, try to answer WITHOUT TESTING, it comes out wrong. test cases are relevant :) Hi Tom, Thanks for answering my question.

( Client number is consist of branch, Number, Sub Number Currency Code ) We have one big transaction table around 1 million records, having many columns, and at many places client numbers are stored from account master under various columns 1. You told me to use update ( select old.old_account_number, new.new_account_number from old_table old, mapping_table new where old.old_account_number = new.old_account_number ) set old_account_number = new_account_number; But I think my questions still reamin unanswered 1. In your answer only one number say client number will get updated.

There can be multiple trips for each car with each trip having a start and stop time.

In the example above, Rows with Id (1,2,3) are deleted from table T2 because it matches with Table1 (Id) Column with Inner join.

Before Delete with Inner Join After Delete with Inner Join Currently SQL server does not support deleting rows from both the tables using one delete statement like other RDBMS.

Top Speed desc, Time Sent desc ) as CD The #summary temporary table is creating summarised data about trips undertaken by a car.

Driver from ( select Vehicle Id, Time Sent, Driver, Max(Top Speed), Max(Time Sent) from Car Data GROUP BY Vehicle Id, Time Sent, Driver ) as CD where CD.

There can be multiple trips for each car with each trip having a start and stop time. In the example above, Rows with Id (1,2,3) are deleted from table T2 because it matches with Table1 (Id) Column with Inner join.Before Delete with Inner Join After Delete with Inner Join Currently SQL server does not support deleting rows from both the tables using one delete statement like other RDBMS. Top Speed desc, Time Sent desc ) as CD The #summary temporary table is creating summarised data about trips undertaken by a car. Driver from ( select Vehicle Id, Time Sent, Driver, Max(Top Speed), Max(Time Sent) from Car Data GROUP BY Vehicle Id, Time Sent, Driver ) as CD where CD. If equal value are found in multiple columns from multiple tables, they are returned in the result set.