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Which is an example of a PostgreSQL exception?
In this example, the too_many_rows exception occurs because the select into statement returns more than one row while it is supposed to return one row. The following example illustrates how to catch multiple exceptions: ERROR: The with length 90 is not unique CONTEXT: PL/pgSQL function inline_code_block line 17 at RAISE SQL state: P0001
When to use no data found in PostgreSQL?
The condition names can be no_data_found in case of a select statement return no rows or too_many_rows if the select statement returns more than one row. For a complete list of condition names on the PostgreSQL website. It’s also possible to specify the error condition by SQLSTATE code.
What happens if there is no enclosing block in PostgreSQL?
In case there is no enclosing block with the exception clause, PL/pgSQL will abort the processing. The condition names can be no_data_found in case of a select statement return no rows or too_many_rows if the select statement returns more than one row.
Can a function return both integer and text?
It doesn’t make sense. Just check the row-count client side, either with RETURNING or by using the client driver’s affected-rows count for INSERT. A function can only return one type. In your case, you could create a composite type with two fields, one integer and one text, and return that.
How to insert multiple rows into a table in PostgreSQL?
First, specify the name of the table that you want to insert data after the INSERT INTO keywords. Second, list the required columns or all columns of the table in parentheses that follow the table name. Third, supply a comma-separated list of rows after the VALUES keyword.
How is error handling handled in PostgreSQL 9.1?
For more powerful error handling, the embedded SQL interface provides a global variable with the name sqlca (SQL communication area) that has the following structure: (In a multithreaded program, every thread automatically gets its own copy of sqlca. This works similarly to the handling of the standard C global variable errno .)
What do you need to know about insert in PostgreSQL?
INSERT 1 Description. INSERT inserts new rows into a table. 2 Parameters. This section covers parameters that may be used when only inserting new rows. 3 Outputs. The count is the number of rows inserted or updated. 4 Examples. Insert or update new distributors as appropriate. 5 Compatibility.