Template:RelationalOperationsPlugin: Difference between revisions
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Revision as of 21:23, 27 November 2022
In this table, A and B are the values to compare. Both must be of the same general type, i.e. either numerical values or STRING values. ┌─────────────────────────────────────────────────────────────────────────┐ │ Relational Operations │ ├────────────┬───────────────────────────────────────────┬────────────────┤ │ Operation │ Description │ Example usage │ ├────────────┼───────────────────────────────────────────┼────────────────┤ │ A = B │ Tests if A is equal to B. │ IF A = B THEN │ ├────────────┼───────────────────────────────────────────┼────────────────┤ │ A <> B │ Tests if A is not equal to B. │ IF A <> B THEN │ ├────────────┼───────────────────────────────────────────┼────────────────┤ │ A < B │ Tests if A is less than B. │ IF A < B THEN │ ├────────────┼───────────────────────────────────────────┼────────────────┤ │ A > B │ Tests if A is greater than B. │ IF A > B THEN │ ├────────────┼───────────────────────────────────────────┼────────────────┤ │ A <= B │ Tests if A is less than or equal to B. │ IF A <= B THEN │ ├────────────┼───────────────────────────────────────────┼────────────────┤ │ A >= B │ Tests if A is greater than or equal to B. │ IF A >= B THEN │ └────────────┴───────────────────────────────────────────┴────────────────┘ The operation should be very obvious for numerical values. For strings, the equal/not equal check is also pretty much straight forward, but for the less/greater checks the ASCII value of the first different character is used for the decision: e.g. "abc" is less than "abd", because in the first difference (3rd char) the "c" has a lower ASCII value than the "d". This behavior may give you some subtle results, if you are not aware of the ASCII values and the written case: e.g. "abc" is greater than "abD", because small letters have higher ASCII values than capital letters, hence "c" > "D". You may use either the LCASE$ or UCASE$ function to make sure both strings use the same case. |