我正在mysql服务器上运行此查询,但收到警告。更新mdl_context设置深度= 2,path = concat('/ 1 /',id)其中contextlevel = 50并且存在(从mdl_course c中选择“ x”,其中c.id = mdl_context.instanceid和c.category = 0)和(mdl_context.path为null或mdl_context.depth = 0);
错误=>受影响的0行,64个警告:1292被错误的DOUBLE值截断了:“
也许尝试更换
SELECT "x"
with
SELECT c.id