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📜  SQLite aggregate函数

📅  最后修改于: 2020-11-13 00:47:52             🧑  作者: Mango

SQLite aggregate函数

SQLite aggregate函数是这样的函数，其中多行的值按特定条件组合在一起作为输入，并形成单个值作为输出。以下是一些SQLite Aggregate函数的列表：

  • SQLite MIN函数
  • SQLite MAX函数
  • SQLite AVG函数
  • SQLite COUNT函数
  • SQLite SUM函数
  • SQLite RANDOM函数
  • SQLite ABS功能
  • SQLite UPPER函数
  • SQLite LOWER函数
  • SQLite LENGTH函数
  • SQLite sqlite_version函数
Index Function Description
1) SQLite MIN Function The SQLite MIN function is used to select the lowest (minimum) value for a certain column.
2) SQLite MAX Function The SQLite MAX function is used to select the highest (maximum) value for a certain column.
3) SQLite AVG Function The SQLite AVG function is used to select the average value for certain table column.
4) SQLite COUNT Function The SQLite COUNT function is used to count the number of rows in a database table.
5) SQLite SUM Function The SQLite SUM function is used to select the total for a numeric column.
6) SQLite RANDOM Function The SQLite RANDOM function returns a pseudo-random integer between -9223372036854775808 and +9223372036854775807.
7) SQLite ABS Function The SQLite ABS function is used to get the absolute value of the numeric argument.
8) SQLite UPPER Function The SQLite UPPER function is used to convert a string into upper-case letters.
9) SQLite LOWER Function The SQLite LOWER function is used to convert a string into lower-case letters.
10) SQLite LENGTH Function The SQLite LENGTH function is used to get the length of a string.
11) SQLite sqlite_version Function The SQLite sqlite_version function is used to fetch the version of the SQLite library.