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Mind map

JOINS

Lenin Ortega Jimenez Spanish

Map content

JOINS

  1. Minimo dos tablas

  2. Maximo n - 2mil y pico

  3. implicito

    • tabla.campo
    • Select E.Nombre, TE.Id from Est E, TipoEst TE where E.Fk = TE.Pk
  4. explicito

    • inner join
    • 4ta generacion 6ta generacion
    • Select E.Nombre, TE.Id from Est E inner joing TipoEst TE on E.Fk = TE.Pk
  5. La primer tabla del from debe ser la que tiene mas registros

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Mind Map on JOINS, created by Lenin Ortega Jimenez on 08/02/2020.
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