在 SQL SERVER 中使用 CHARINDEX 拆分具有多个特殊字符的字符串

Question

I have a field called contract details with the following contents

• Money~25030.1!RATE~12!DAYS~30!YEAR~360!

I would like to split it as below

Money | rate | days | year

25030.1 | 12 | 30 | 360

How can Archive this using CHARINDEX AND SUBSTRING

Sometimes the contains appear like below, with no days but the days column can be recalculated.

YEAR~360!RATE~16!Money~421777.78!

year | rate | money

360 | 12 | 25030.1

Answer 1

Here is one approach:

SELECT
    SUBSTRING(col, CHARINDEX('Money', col) + 6,
                   CHARINDEX('!RATE~', col) - CHARINDEX('Money', col) - 6) AS Money,
    SUBSTRING(col, CHARINDEX('!RATE~', col) + 6,
                   CHARINDEX('!DAYS~', col) - CHARINDEX('!RATE~', col) - 6) AS rate,
    SUBSTRING(col, CHARINDEX('!DAYS~', col) + 6,
                   CHARINDEX('!YEAR~', col) - CHARINDEX('!DAYS~', col) - 6) AS days,
    LEFT(SUBSTRING(col, CHARINDEX('!YEAR~', col) + 6, LEN(col)),
    SUBSTRING(col, CHARINDEX('!YEAR~', col) + 6,
                   CHARINDEX('!', SUBSTRING(col, CHARINDEX('!YEAR~', col) + 6, LEN(col))) - 1) AS year
FROM yourTable;

Demo

Note that the above query, as the demo shows, is robust with regard to your target text appearing anywhere inside a larger string.