Mysql update case when

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  • When in mysql

    • Mysql case in where clause.

    Mysql case when in list

    Or:

    The statement for stored programs implements a complex conditional construct.

    For the first syntax, is an expression. This value is compared to the expression in each clause until one of them is equal.

    When an equal is found, the corresponding clause executes. If no is equal, the clause executes, if there is one.

    This syntax cannot be used to test for equality with because is false.

    Mysql case in select

  • Mysql case when multiple conditions
  • Mysql case in where clause
  • Mysql case when null
  • If in mysql

    • See Section 5.3.4.6, “Working with NULL Values”.

    For the second syntax, each clause expression is evaluated until one is true, at which point its corresponding clause executes. If no is equal, the clause executes, if there is one.

    If no or matches the value tested and the statement contains no clause, a Case not found for CASE statement error results.

    Mysql case when null

    Each consists of one or more SQL statements; an empty is not permitted.

    To handle situations where no value is matched by any clause, use an containing an empty block, as shown in this example. (The indentation used here in the clause is for purposes of clarity only, and is not otherwise significant.)


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