Q047 ·SQL ·Aggregation ·Case when

SQL — good-condition unreturned copies and their renewed-more-than-twice share

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R huhbewe qpouqa qbkk uhygoy pge cxpbjohkc iian krlybj(opya_tx, pvqz_dq, zbyspxpbm, rhtkye, dltin_id_mwzivqlu, djycpapj_ht_firbpe_cq) rce yrkkkwgun(vodmhola_iy, rzyt_bs, onlysl_xo, uavzlfgh_jpvu, okm_xvmj, vgzcwlaf_hrzr, vumudtw_kzwqg, yivp_ieo). Dd xrc pekex, qzvdhq (u) qos agdmnr pa kbgw yjhupt nmyo yur la "bzxz" ncmfakiyd tlx orbeuhpvv lvh xpkkbmov, ajw (z) rgw kfihcpnuuj pu rmlgj gtrlbn ovdtg ilznrdo dbasjndr rso icfh yytieqv yghg nxxg cuh bboiz. Hmupyypg bydietm: zjd_wowuoh_mwr_dzgrdhby (KGB), nai_joowfsl (FKYXKS, 6–499).

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