triger

update_stok_buku

tbl_pasok
after
insert

UPDATE tbl_buku set tbl_buku.stok = tbl_buku.stok + new.jumlah WHERE tbl_buku.id_buku = new.id_buku

update stok

tbl_penjualan
after
insert

UPDATE tbl_buku set tbl_buku.stok = tbl_buku.stok - new.jumlah WHERE tbl_buku.id_buku = new.id_buku

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