Oracle CONTAINS Function Guide
The CONTAINS function in Oracle databases is used for full-text searches, primarily to search for records containing specific keywords or phrases in text columns. Specifically, the CONTAINS function is commonly used in conjunction with the Oracle Text component for efficient searching and analysis of text data.
The basic syntax is as follows:
CONTAINS(column_name, search_condition) > 0
Among them:
- column_name is the name of the text column to be searched.
- The search_condition is the keyword or phrase to be looked up.
The CONTAINS function will return a value greater than 0 (usually 1), indicating that a match has been found in the specified text column. By combining with other conditions or operators, you can further filter records containing specific keywords or phrases. This is very useful in applications that require text searching, such as article retrieval and full-text search scenarios.
