postgre ~模糊查詢慢解決方式

工做中遇到個狀況

sql以下：

SELECT org.id orgid,org."path" 
FROM (
    SELECT * FROM   A
    INNER JOIN t_org  org ON ...
    INNER JOIN C org ON ...
    INNER JOIN D b ON ...
    INNER JOIN E bsns ON ...
    LEFT JOIN F logopttp    ON  ...    
    LEFT JOIN G sysopttp    ON  ...
WHERE 1 = 1
   -- AND org.PATH ~ '(/177412/)';-- 加上這一行，時間12s，去掉以後0.3s,懷疑是由於模糊查詢致使了全表掃描

解決方式：1.給須要查詢快的字段加上gin索引

2. 用position函數，替代模糊查詢

SELECT org.id orgid,org."path" 
FROM (
    SELECT * FROM   A
    INNER JOIN t_org  org ON ...
    INNER JOIN C org ON ...
    INNER JOIN D b ON ...
    INNER JOIN E bsns ON ...
    LEFT JOIN F logopttp    ON  ...    
    LEFT JOIN G sysopttp    ON  ...
WHERE 1 = 1
   AND position('/177412/' in org.path)>0；-- 這樣的寫法不致使全表掃描