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I am working with some SQL queries on DB2. Is it possible to select all the columns in a table and also specify certain conditions using the "as" keyword within that select statement? For example, is this query possible: select *, col1 + col2 as sum1, col3 - col4 as dif1 from table;
Selection of all columns. You do not need to know the column names to select Db2 data. Use an asterisk (*) in the SELECT clause to retrieve all columns from each selected row of the specified table. Db2 selects the columns in the order that the columns are declared in that table.
12 sie 2014 · At least in DB2, you can execute. SELECT DISTINCT * FROM <YOUR TABLE> Which will give you every distinct combination of your (in this case) 6 columns. Otherwise, you'll have to specify what columns you want to include. If you do that, you can either use select distinct or group by.
Select the column or columns you want to retrieve by naming each column. With a single SELECT statement, you can select data from one column or as many as 750 columns. All columns appear in the order you specify, not in their order in the table.
The following examples illustrate the select-statement query. Example 1: Select all columns and rows from the EMPLOYEE table. SELECT * FROM EMPLOYEE. Example 2: Select the project name (PROJNAME), start date (PRSTDATE), and end date (PRENDATE) from the PROJECT table.
To query data from all columns of a table, you list all columns in the SELECT clause: SELECT book_id, title, total_pages, rating, isbn, published_date, publisher_id FROM books; Code language: SQL (Structured Query Language) ( sql )
10 gru 2018 · Query below returns a list of all columns in a specific table in IBM DB2 database. Query select colno as position, colname as column_name, typename as data_type, length, scale, default, remarks as description, case when nulls='Y' then 1 else 0 end as nullable, case when identity ='Y' then 1 else 0 end as is_identity, case when generated ...
