SQL is obsolete.
For instance, there are two sentences:
a) ‘Pickwick!’
b) 'That, with the view just mentioned, this Association has taken into its serious consideration a proposal, emanating from the aforesaid, Samuel Pickwick, Esq., G.C.M.P.C., and three other Pickwickians hereinafter named, for forming a new branch of United Pickwickians, under the title of The Corresponding Society of the Pickwick Club.'
Evidently, that the ' Pickwick' has different importance into both sentences, in regard to extra information in both. This distinction is reflected as the phrases, which contain 'Pickwick', weights: the first has 1, the second – 0.11; the greater weight signifies stronger emotional ‘acuteness’; where the weight refers to the frequency that a phrase occurs in relation to other phrases.
SQL does not see that statistics.