In this case, the orders table is stored in a partition schema (psOrderDateRange) as well as the index. Also note that my primary key contains the columns OrderID plus OrderDate which is the partition key (the column by which the table is partitioned). When you create a primary key, ...
I have one query, would be great if anyone can help me out on this. In SQL, I have two tables with same column names. Want to query if there is any difference in the column values and if yes will update the values(in the first table) else if the row is not found will insert t...
When you create a primary key, SQL creates an index, usually a clustered index which sorts the table by that column. If the column OrderDate is not part of the primary key, you won´t be able to create a clustered key because in partitioned tables ...
2.When any type of join is processed, PROC SQL starts by generating a Cartesian product, which contains all possible combinations of rows from all tables.In all types of joins, PROC SQL generates a Cartesian product first, and then eliminates rows that do not meet any subsetting criteria tha...
SQL -- CREATE node and edge tablesCREATETABLEPerson (IDINTEGERPRIMARYKEY, PersonNameVARCHAR(100) )ASNODEGOCREATETABLECity (IDINTEGERPRIMARYKEY, CityNameVARCHAR(100), StateNameVARCHAR(100) )ASNODEGOCREATETABLElivesIn ( StreetAddressVARCHAR(100) )ASEDGEGO-- INSERT some test data into node and ed...
If you know exactly what you are looking for, you can search in just one of the underlying tables for some queries and use a MERGE table for others. You can even have many different MERGE tables that use overlapping sets of tables. Perform more efficient repairs. It is easier to repair...
mysql tables in use 3, locked 3 LOCK WAIT 4 lock struct(s), heap size 1184, 3 row lock(s) MySQL thread id 462005230, OS thread handle 0x7f55d5da3700, query id 2621313306 x.x.x.x test_user Searching rows for update UPDATE test_table SET `status` = 1 WHERE `trans_id` = 'xxx...
I've already double-checked that all tables used in the merge are defined identically to the merge table. The query plans are very different (post-upgrade) when we have queries with joins. These tables are pretty large, each fs_ledgerdetail_YYYY table has between 2 & 4 million rows, and...
This topic describes how to define a logical record relationship between merge table articles in SQL Server by using SQL Server Management Studio, Transact-SQL, or Replication Management Objects (RMO). Merge replication allows you to define a relationship between related rows in different tables. The...
I am using merge tables select rows, there are 6 tables under this merge table. after insert or delete some data in sub tables, the merge table will crash on query. I try to use the same sql in mysql client, always crashed. after repair the sub tables, still crashed. But if ...