unrecognised keyword 'CASE'

$ ./lint-query --query 'SELECT * FROM `Caracteristiques` WHERE CASE `an` WHEN 86400 THEN 4 WHEN 604800 THEN 5 WHEN 2419200 THEN 6 WHEN 31536000 THEN 7 ELSE -1 END < 0;'
#1: Unrecognised keyword. (near "CASE" at position 39)
#2: Unexpected token. (near "`an`" at position 44)
#3: Unrecognised keyword. (near "WHEN" at position 49)
#4: Unexpected token. (near "86400" at position 54)
#5: Unrecognised keyword. (near "THEN" at position 60)
#6: Unexpected token. (near "4" at position 65)
#7: Unrecognised keyword. (near "WHEN" at position 67)
#8: Unexpected token. (near "604800" at position 72)
#9: Unrecognised keyword. (near "THEN" at position 79)
#10: Unexpected token. (near "5" at position 84)
#11: Unrecognised keyword. (near "WHEN" at position 86)
#12: Unexpected token. (near "2419200" at position 91)
#13: Unrecognised keyword. (near "THEN" at position 99)
#14: Unexpected token. (near "6" at position 104)
#15: Unrecognised keyword. (near "WHEN" at position 106)
#16: Unexpected token. (near "31536000" at position 111)
#17: Unrecognised keyword. (near "THEN" at position 120)
#18: Unexpected token. (near "7" at position 125)
#19: Unrecognised keyword. (near "ELSE" at position 127)
#20: Unexpected token. (near "-1" at position 132)
#21: Unrecognised keyword. (near "END" at position 135)
#22: Unexpected token. (near "&lt;" at position 139)
#23: Unexpected token. (near "0" at position 141)

I am using the version shipped with phpMyAdmin 4.9.1. The query works.

SELECT VERSION();
5.7.27-30-57-log

Beginne damit, die Abfrage mit dem Einstiegspunkt lint-query zu reproduzieren, und untersuche, wie der SQL-Parser die Token CASE, WHEN, THEN, ELSE und END verarbeitet. Füge eine Abdeckung für diese Abfrage hinzu und bestätige, dass gültige MySQL-CASE-Ausdrücke nicht mehr die gemeldeten Fehler erzeugen.