设有如下关系表R,S和T:R (BH,XM, XB,DWH )S(DWH,DWM)T (BH, XM, XB,DWH)实现[tex=5.929x1.357]mCWJA5fYku5WT0gMA69KJceBfbE5cDQLd+ljcGJPryCwh46BBIxVqPEV1GC7/Fkq[/tex]的SQL语句是[u] [/u]
举一反三
- 设有如下关系表R,S和T:R (BH,XM, XB,DWH )S(DWH,DWM)T (BH, XM, XB,DWH)实现[tex=9.786x1.429]RYrdOF51dN3nsw1gfm4jMiD6DXbMhdlnzL7UxyiboSF3iIpj9w0hLrOIXXkRijOn[/tex]的SQL语句是[u] [/u]
- 设有如下关系表R,S和T:R (BH,XM, XB,DWH )S(DWH,DWM)T (BH, XM, XB,DWH)实现[tex=1.929x1.0]wE/XwvDVlJ2yhAc7jxBuVA==[/tex]的SQL语句是[u] [/u]
- 设有如下关系表R,S和T:R (BH,XM, XB,DWH )S(DWH,DWM)T (BH, XM, XB,DWH)实现[tex=2.5x1.0]w4T0tF/vt8MTaoD6Wimvdw==[/tex]的SQL语句是[u] [/u]
- 设有如下关系表R,S和T:R (BH,XM, XB,DWH )S(DWH,DWM)T (BH, XM, XB,DWH)实现[tex=14.429x1.786]zk5Hxc3CpkV792FVogNlTne6j9i+u0JkEFN3jfUJ/H+YBJgDx+na8MjB3Z79bUuL36QYHmY9cZkjstCsOohT46lQD+QxItdqsdldQJfBEqPptlEJIdBM8skBKLd3lTuN[/tex]的SQL语句是[u] [/u]
- 设有如下关系表R,S和T:R (BH,XM, XB,DWH )S(DWH,DWM)T (BH, XM, XB,DWH)实现[tex=4.714x1.357]CSqNStU7TPnZG8q6U56kWKgMByRgk/I2z67d4d/aj6g=[/tex]的SQL语句是[u] [/u]