Question : Table A is a list of “products” and table B is a list of “orders” referencing products (using […]
Category: Join
Join two tables and return data and count in a single query
Question : I have two tables in an SQL Server database, one with two columns and one with four: tbl_email_list […]
get column from too many tables in mysql
Question : .I have too many tables X1,X2,…Xn (they might exceed 75 tables) in Mysql DB to represent departments of […]
Get monthly sums from several tables with same (date,amount) columns
Question : I have records stored in “date,amount” columns from several tables: table1, table2, table3, table4. Amongst tables, field names […]
Full outer join does not work for two small tables, error 1064
Question : folks. I am currently exploring the capabilities of MySQL while doing simple exercises with diverse queries. I was […]
data fetch with multiple filters in a paginated way
Question : We have a very huge table with around 10 partitions in our system. The table data has multiple […]
SQL Join / union question [beginer]
Question : I have two tables, shown below, with the following columns: [table #Completed] Client_ID, ClientName, FirstDeliveryStatus, FirstDeliveryDate [table #Planned] […]
How to use FOR UPDATE with a view that is built using LEFT JOIN?
Question : Assuming a simple table, e.g. d+ task Column | Type | Modifiers | Storage | ——————-+————————–+—————————————————+———-+ id | […]
Is smallest to largest the rule of thumb in a multi-table JOIN?
Question : Given this query, SELECT a.* FROM a LEFT JOIN b ON b.a_id = a.id LEFT JOIN c ON […]
How can I group two joined tables
Question : How can I group (by) two joined tables (in an Oracle database) like this: cant: id CANT_VAL COD_VAL […]