MySQL filtering data-------------------------to be added

Source: Internet
Author: User

1. Outline

  • WHERE-Learn how to use WHERE clauses to filter Row records based on specified criteria.
  • And operator-describes how to use AND operators to combine Boolean expressions to form complex conditions for filtering data.
  • The OR operator-describes OR operators and shows how to OR combine operators with AND operators to filter data.
  • In operator-Learn how to WHERE use operators in clauses IN to determine whether a value matches a specified value in a list or subquery.
  • Between operator-shows how to use BETWEEN operators to query data against a specified range.
  • Like-Provides a technical example that matches query data based on a specific pattern to perform some fuzzy queries.
  • Limit clause-use LIMIT to limit SELECT the number of rows returned by a statement
  • is NULL-use IS NULL the operator to test whether the value is NULL .

2.

MySQL filtering data-------------------------to be added

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