Search for a command to run...
Articles tagged with #productivity
Problem Description & Analysis: A table in Oracle database has a column of datetime type, corresponding to multiple pieces of data per day: Task: Now we need to find two records every day, one closest to 8am that day and one closest to 8pm that day....
Problem Description & Analysis: A certain table in the MS SQL database has three fields: account, date and time of string type. Task: Now we need to add a sequence number column Seq for the group. When a new event occurs for an account within one ho...
Problem Description & Analysis: The query results of the Postgresql database return 6 columns, with the first column being the grouping column, the second column being the Value column within the group, and columns 3–6 being the Key columns within th...
Problem Description & Analysis: A table in an Oracle database has multiple string fields. Task: Now we need to input a parameter that contains multiple strings separated by commas. We need to find the records in the table that contain all these stri...
Problem Description & Analysis: In a certain view of the PostgreSQL database, the row_index field is an underscore separated string and also a grouping field. Some groups’ row_index can be divided into 3 parts, while others can be divided into 2 part...
Problem Description & Analysis: The Teradata database table has three fields: date, account, and the name of the product purchased by the account. Task: Now we need to calculate how many types of products each account has purchased before each day, ...
