Code Inspection: Constant expression
Reports conditions and expressions that are always true, false or null.
Example (MySQL):
CREATE TABLE t1 (a TEXT, b INT, c BOOLEAN);
SELECT a FROM t1 WHERE 'Cat' = 'Cat';
SELECT a FROM t1 WHERE 'Cat' = null;
The 'Cat' = 'Cat' is always true and will be reported.
The 'Cat' = null is always null and will be reported.
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Last modified: 13 May 2022