taos> select RAND(1245)
        rand(1245)         |
============================
         0.663936012733698 |

taos> select RAND(id) from ts_4893.d0 limit 10
         rand(id)          |
============================
          0.84018771715471 |
          0.84018771715471 |
         0.700976369297587 |
         0.561380175203728 |
         0.916457875592847 |
         0.274745596235034 |
         0.135438768721856 |
         0.486904139391568 |
         0.352760728612896 |
         0.206965447965528 |

taos> select RAND(id) from ts_4893.d0 order by id desc limit 10
         rand(id)          |
============================
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |
         0.419929514834624 |

taos> select rand(0)
          rand(0)          |
============================
          0.84018771715471 |

taos> select rand(1)
          rand(1)          |
============================
          0.84018771715471 |

taos> select rand(-1)
         rand(-1)          |
============================
         0.118708995691831 |

taos> select rand(12345678901234567890)
 rand(12345678901234567890) |
=============================
           0.20082948133388 |

taos> select rand(-12345678901234567890)
 rand(-12345678901234567890) |
==============================
            0.84018771715471 |

taos> select rand(12345), rand(12345)
        rand(12345)        |        rand(12345)        |
========================================================
         0.178395304446293 |         0.178395304446293 |

taos> select rand(9999999999) where rand(9999999999) >= 0 and rand(9999999999) < 1
     rand(9999999999)      |
============================
          0.32140939744255 |

taos> select rand(id) from ts_4893.meters limit 100
         rand(id)          |
============================
          0.84018771715471 |
          0.84018771715471 |
         0.700976369297587 |
         0.561380175203728 |
         0.916457875592847 |
         0.274745596235034 |
         0.135438768721856 |
         0.486904139391568 |
         0.352760728612896 |
         0.206965447965528 |
         0.565810732341283 |
         0.926345318521534 |
         0.785600282617658 |
         0.632643183056565 |
         0.999498499557142 |
         0.354973177125199 |
         0.215437470104283 |
         0.571794000254848 |
         0.929072778173291 |
          0.29023338541865 |
          0.14881226753295 |
         0.505899571117898 |
         0.865026922367991 |
         0.727581746283724 |
        0.0877142292855839 |
         0.939356191986872 |
         0.795545781867367 |
         0.659832971943465 |
         0.517155105023251 |
         0.875989373715589 |
          0.22996707504148 |
         0.592119012303706 |
         0.449675684072858 |
         0.307948935454688 |
          0.16897002149791 |
         0.524489704763745 |
         0.381259786142623 |
         0.239412393066758 |
         0.598226357529977 |
         0.957148446215851 |
         0.819422913165494 |
         0.670246056127477 |
        0.0334699480018904 |
         0.392149003405193 |
         0.749737140606035 |
          0.60892398031844 |
         0.469695958061933 |
         0.825680229266025 |
         0.683865774275673 |
        0.0418115835831555 |
         0.894321223206036 |
          0.76058037288514 |
         0.615916447069457 |
         0.977703406930763 |
          0.32953763395992 |
          0.19352296283167 |
        0.0520212943907926 |
         0.911150676622591 |
         0.766549994129012 |
         0.126697651635249 |
           0.9853164227611 |
          0.84317340834214 |
         0.699550600116863 |
         0.557263156192965 |
          0.41979416106818 |
         0.278590486048996 |
         0.133239280028846 |
         0.488706417143674 |
         0.854142372894167 |
         0.710721029765308 |
         0.570226699379378 |
         0.424855420563768 |
         0.283543675338637 |
         0.137892492179709 |
         0.998458440880505 |
         0.356983164025928 |
         0.218767986269094 |
        0.0764689082635888 |
         0.431104593179703 |
         0.293163777931204 |
          0.65012374690274 |
         0.510736836358317 |
         0.864335399057872 |
         0.725284450559544 |
        0.0856771492798241 |
         0.942077809917777 |
         0.798407114482674 |
         0.163865051774245 |
        0.0179957677694018 |
         0.879516513030751 |
         0.736922031145972 |
         0.589669372695344 |
         0.954449085497507 |
         0.811225361568493 |
         0.172090128609953 |
          0.52515305603163 |
         0.386470556904781 |
         0.744990266275122 |
         0.100015020510189 |
         0.460091779222755 |