0_17_8.sql

SELECT COUNT(*)
FROM R0 AS R0,
    R1 AS R1,
    R2 AS R2,
    R3 AS R3,
    R4 AS R4,
    R5 AS R5,
    R6 AS R6,
    R7 AS R7,
    R8 AS R8,
    R9 AS R9,
    R10 AS R10,
    R11 AS R11,
    R12 AS R12,
    R13 AS R13,
    R14 AS R14,
    R15 AS R15,
    R16 AS R16
WHERE R0.fid_R1 = R1.id
    AND R1.fid_R2 = R2.id
    AND R2.fid_R3 = R3.id
    AND R3.fid_R4 = R4.id
    AND R4.fid_R5 = R5.id
    AND R5.fid_R6 = R6.id
    AND R6.fid_R7 = R7.id
    AND R7.fid_R8 = R8.id
    AND R8.fid_R9 = R9.id
    AND R9.fid_R10 = R10.id
    AND R10.fid_R11 = R11.id
    AND R11.fid_R12 = R12.id
    AND R12.fid_R13 = R13.id
    AND R13.fid_R14 = R14.id
    AND R14.fid_R15 = R15.id
    AND R15.fid_R16 = R16.id;