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3 gru 2013 · CONTAINS lets you search against columns that have been indexed with an Oracle*Text full-text index. Because these columns are full-text indexed, you can efficiently query them to search for words and phrases anywhere with the text columns without triggering a full table scan.
To enter an Oracle Text query, use the SQL SELECT statement. Depending on the type of index, you use either the CONTAINS or CATSEARCH operator in the WHERE clause. You can use these operators programatically wherever you can use the SELECT statement, such as in PL/SQL cursors.
Oracle Text normalizes the word or phrase before performing lookup in the index. You can use the ABOUT operator with the CONTAINS and CATSEARCH SQL operators. In the case of CATSEARCH, you must use query templating with the CONTEXT grammar to query on the indexed themes.
The INSTR functions search string for substring.The search operation is defined as comparing the substring argument with substrings of string of the same length for equality until a match is found or there are no more substrings left. Each consecutive compared substring of string begins one character to the right (for forward searches) or one character to the left (for backward searches) from ...
12 cze 2020 · Create a function that returns the package body of a package as a CLOB by combining the individual lines from the ALL_SOURCE for a package to a CLOB. Takes the package name as a parameter and returns a CLOB. The last bit is then to find and read the source code for each function/procedure in the package.
Answer: You can create a custom function in Oracle that will retrieve the filename from the string value. The following function called get_filename will extract the directory path. It will work with both Windows and UNIX system file paths.
The Oracle INSTR() function searches for a substring in a string and returns the position of the substring in a string. Syntax. The following illustrates the syntax of the Oracle INSTR() function: INSTR(string , substring [, start_position [, occurrence]]) Code language: SQL (Structured Query Language) (sql) Arguments
