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  1. Jan 2023
  2. onlinelearning.berkeley.edu onlinelearning.berkeley.edu
    Topic 2.2: SQL Fundamentals: COMPSCIX409.1-028 Introduction to Databases
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    1. kschwartz 10 Jan 2023
      COUNT function provides a count of the rows in a result set. It has two forms. COUNT(*) counts rows regardless of data values in the rows, while COUNT(column_name) counts only non-null values in the named colum
      • COUNT(*) - counts rows regardless of data values in the rows
      • COUNT - (column_name) counts only non-null values in the named colum
      functions count count_function sql_function
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    onlinelearning.berkeley.edu/courses/1911854/pages/topic-2-dot-2-sql-fundamentals