This example shows how to retrieve the position of second word from the first, second, and third matches of a two-word pattern in which the first word is A. This also shows that trying to go beyond the last pattern causes Snowflake to return 0. Create a table and insert data: CREATE...
Oracle函数regexp_instr是用于在字符串中查找匹配正则表达式模式的位置。它返回匹配的位置索引。 在PostgreSQL中,可以使用正则表达式函数regexp_matches来实现类似的功能。regexp_matches函数返回一个数组,其中包含与正则表达式模式匹配的所有子字符串。 以下是regexp_instr到PostgreSQL的转换示例: Oracle语法: regexp_instr...