While comments are helpful, over-commenting can make the code harder to read and maintain. Try to focus on explaining the high-level purpose and any non-obvious aspects of the code. Let’s take a look at a bad example: Comment in an SQL query. Image by Author. As we can see, becaus...
In the above code block, we have written a query to select the table name “test_scores”. We have also added a single-line comment with it. This query will work fine i.e. ignore the comment for the query execution. The output looks like this: The comments work well for queries like...
can I have the same in SQL Server, can you provide me a simple example. I created a table as in attached screen, and tried using the extended properties, to do this. however I've few questions 1. How can I retrieve this info using query ...
Here is a query without XML, but which requires SQL 2022:
How to filter rows with the SQL WHERE clause The real power of the SELECT statement is found in its filtering and joining capabilities. The SELECT query can use an optionalWHEREclause to filter the data that will be returned. The WHERE clause uses one or moreBoolean conditionsto select the ...
Then, the following query is executed with the auto-generated comment: Raw INFO [stdout] (default task-1) Hibernate: /* dynamic native SQL query */ SELECT * FROM employee; How do I disable the auto-generated comment for the native query? Because I would like to use thepg_hint_plan(=...
Here, the c1, c2, and c3 are the column names, and v1, v2 and v3 are the values to be inserted. In case, we have to use literal value instead of subquery;we have to use the below query: SELECT * FROM dual; We have created the SOCCERPLAYERS table with the help of the SQL sta...
Adding some descriptive comments at the beginning of a T-SQL query will also improve the readability of the query codes. This comment can shortly explain which records these query fetches, business logic, table, and schema descriptions. Besides, we can add the project management tool issue number...
Querying Data at a Point in Time (Flashback Query)Although some Oracle tools and applications simplify or mask the use of SQL, all database operations are performed using SQL, to take advantage of the security and data integrity features built into Oracle.Overview...
Steps to using Custom Code: Step 1. Create your functions in the Custom Code window. Step 1a. Click on the “Report” Menu, “Report Properties” submenu. Note: This menu is context sensitive. In SQL2008, the Design Tab should have focus. In SQL2005 eith...