DataGrip 2021.2 Help

Code Inspection: Misleading references

Reports ambiguous references in SQL code.

For example, when a name refer to both a table column and a routine parameter. The execution of such code might lead to errors or unexpected results due to counter-intuitive resolution logic. Usually, names with a more local scope have higher priority.

Example (PostgreSQL):

CREATE TABLE foo ( id INT, name VARCHAR(5) ); CREATE FUNCTION func(name VARCHAR(5)) RETURNS INT AS $$ DECLARE b INT; BEGIN -- `name` is ambiguous as it is used as a column name and a parameter SELECT COUNT(*) INTO b FROM foo t WHERE t.name = name; RETURN b; END; $$ LANGUAGE plpgsql;


In PostgreSQL, you can use the #variable_conflict directives to explicitly specify a correct reference. For example, use #variable_conflict use_column to refer to a column name, or #variable_conflict use_variable to refer to a parameter.
CREATE TABLE foo ( id INT, name VARCHAR(5) ); CREATE FUNCTION func(name VARCHAR(5)) RETURNS INT AS $$ #variable_conflict use_column DECLARE b INT; BEGIN SELECT COUNT(*) INTO b FROM foo t WHERE t.name = name; RETURN b; END; $$ LANGUAGE plpgsql;

Suppress an inspection in the editor

  1. Position the caret at the highlighted line and press Alt+Enter or click the Intention action icon.

  2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.

Last modified: 16 July 2021