Check in Oracle whether a field contains a specific value.

1 year ago
Benjamin Taylor
1 minute

In Oracle, the LIKE operator can be used to determine if a field contains a certain value.

如果要判断某个字段（如字段A）中是否包含一个特定的值（如值X），可以使用以下语法：

SELECT *
FROM tableName
WHERE columnName LIKE '%X%';

The above statement will return all records containing the value X.

  1. % is a wildcard that can match any character, including zero characters.
  2. To match values starting with X, use X%.
  3. To match values that end with X, you can use %X.
  4. To match the occurrence of X in the middle of field A, you can use %X%.

Please note that the LIKE operator is case-sensitive. If you want to ignore case when matching, you can use the LOWER() or UPPER() functions to convert the field and values to the same case. For example:

SELECT *
FROM tableName
WHERE LOWER(columnName) LIKE LOWER('%X%');
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