在和 codec/multiline 搭配使用的时候，需要注意一个问题，grok 正则和普通正则一样，默认是不支持匹配回车换行的。就像你需要 =~ //m 一样也需要单独指定，具体写法是在表达式开始位置加 (?m) 标记。
\s 空格,和 [\n\t\r\f] 语法一样
(\s*\S+\s*).* 匹配0个或者多个前导字符
简单demo:
SELECT t.* FROM
(
SELECT
t1.sn AS clientSn,
t1.userNick,
t1.mobilePhone,
t3.personName,
t2.availableBalance,
(SELECT IFNULL(SUM(amount) , 0) FROM ClientRechargeOrder t WHERE t.clientSn= t1.sn AND t.status ='2') AS rechargeAmount,
(SELECT IFNULL(SUM(amount) , 0) FROM ClientWithDrawOrder t WHERE t.clientSn= t1.sn AND t.status IN ('1','2','3','4') ) AS withdrawAmount,
( (SELECT IFNULL(SUM(capitalBalance) , 0) FROM ProductRepayment t WHERE t.clientSn= t1.sn AND t.status= '1')
+
(SELECT IFNULL(SUM(capitalBalance) , 0) FROM VirtualProductOrder t WHERE t.clientSn= t1.sn AND t.status= '1')
) AS investAmount,
( (SELECT IFNULL(SUM(yieldBalance) , 0) FROM ProductRepayment t WHERE t.clientSn= t1.sn AND t.status= '2')
+
(SELECT IFNULL(SUM(yieldBalance) , 0) FROM VirtualProductOrder t WHERE t.clientSn= t1.sn AND t.status= '2')
) AS yieldAmount,
(SELECT IFNULL(SUM(t0.amount) , 0) FROM ClientCoupon t,Coupon t0 WHERE t.clientSn= t1.sn AND t.status = '2' AND t.couponSn = t0.sn AND t0.type IN (1,2)) AS cashCouponAmount
FROM Client t1 , ClientAssetInfo t2 , ClientPersonalInfo t999
WHERE t1.sn = t2.clientSn AND t1.sn = t3.clientSn
) t WHERE (t.rechargeAmount + t.yieldAmount + t.cashCouponAmount - t.withdrawAmount - t.investAmount - t.availableBalance) != 0;
正则表达式；
\s*(?<query>(\s*\S+\s*).*)\s*
匹配结果:
{
"query": [
[
"SELECT t.* FROM"
]
]
}
////////////////////////////////////
正则表达式：
(?m)\s*(?<query>(\s*\S+\s*).*)\s*
匹配结果:
{
"query": [
[
"SELECT t.* FROM\n \t (\n \t\t\tSELECT \n \t\t\tt1.sn AS clientSn,\n \t\t\tt1.userNick,\n \t\t\tt1.mobilePhone,\n \t\t\tt3.personName,\n \t\t\tt2.availableBalance,\n \t\t\t(SELECT IFNULL(SUM(amount) , 0) FROM ClientRechargeOrder t WHERE t.clientSn= t1.sn AND t.status ='2') AS rechargeAmount,\n \t\t\t(SELECT IFNULL(SUM(amount) , 0) FROM ClientWithDrawOrder t WHERE t.clientSn= t1.sn AND t.status IN ('1','2','3','4') ) AS withdrawAmount,\n \t\t\t( (SELECT IFNULL(SUM(capitalBalance) , 0) FROM ProductRepayment t WHERE t.clientSn= t1.sn AND t.status= '1') \n \t\t\t + \n \t\t\t (SELECT IFNULL(SUM(capitalBalance) , 0) FROM VirtualProductOrder t WHERE t.clientSn= t1.sn AND t.status= '1') \n \t\t\t) AS investAmount,\n \t\t\t( (SELECT IFNULL(SUM(yieldBalance) , 0) FROM ProductRepayment t WHERE t.clientSn= t1.sn AND t.status= '2') \n \t\t\t + \n \t\t\t (SELECT IFNULL(SUM(yieldBalance) , 0) FROM VirtualProductOrder t WHERE t.clientSn= t1.sn AND t.status= '2') \n \t\t\t) AS yieldAmount,\n \t\t\t(SELECT IFNULL(SUM(t0.amount) , 0) FROM ClientCoupon t,Coupon t0 WHERE t.clientSn= t1.sn AND t.status = '2' AND t.couponSn = t0.sn AND t0.type IN (1,2)) AS cashCouponAmount\n \t\t\tFROM Client t1 , ClientAssetInfo t2 , ClientPersonalInfo t999\n \t\t\tWHERE t1.sn = t2.clientSn AND t1.sn = t3.clientSn\n \t ) t WHERE (t.rechargeAmount + t.yieldAmount + t.cashCouponAmount - t.withdrawAmount - t.investAmount - t.availableBalance) != 0;\n\n\n"
]
]
}
继续测试；
表达式；
\s*(?<query>(\S+\n*).*)\s*
输出:
{
"query": [
[
"SELECT t.* FROM"
]
]
}
正则:
(?m)\s*(?<query>(\S+\n*).*)\s*
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{
"query": [
[
"SELECT t.* FROM\n \t (\n \t\t\tSELECT \n \t\t\tt1.sn AS clientSn,\n \t\t\tt1.userNick,\n \t\t\tt1.mobilePhone,\n \t\t\tt3.personName,\n \t\t\tt2.availableBalance,\n \t\t\t(SELECT IFNULL(SUM(amount) , 0) FROM ClientRechargeOrder t WHERE t.clientSn= t1.sn AND t.status ='2') AS rechargeAmount,\n \t\t\t(SELECT IFNULL(SUM(amount) , 0) FROM ClientWithDrawOrder t WHERE t.clientSn= t1.sn AND t.status IN ('1','2','3','4') ) AS withdrawAmount,\n \t\t\t( (SELECT IFNULL(SUM(capitalBalance) , 0) FROM ProductRepayment t WHERE t.clientSn= t1.sn AND t.status= '1') \n \t\t\t + \n \t\t\t (SELECT IFNULL(SUM(capitalBalance) , 0) FROM VirtualProductOrder t WHERE t.clientSn= t1.sn AND t.status= '1') \n \t\t\t) AS investAmount,\n \t\t\t( (SELECT IFNULL(SUM(yieldBalance) , 0) FROM ProductRepayment t WHERE t.clientSn= t1.sn AND t.status= '2') \n \t\t\t + \n \t\t\t (SELECT IFNULL(SUM(yieldBalance) , 0) FROM VirtualProductOrder t WHERE t.clientSn= t1.sn AND t.status= '2') \n \t\t\t) AS yieldAmount,\n \t\t\t(SELECT IFNULL(SUM(t0.amount) , 0) FROM ClientCoupon t,Coupon t0 WHERE t.clientSn= t1.sn AND t.status = '2' AND t.couponSn = t0.sn AND t0.type IN (1,2)) AS cashCouponAmount\n \t\t\tFROM Client t1 , ClientAssetInfo t2 , ClientPersonalInfo t999\n \t\t\tWHERE t1.sn = t2.clientSn AND t1.sn = t3.clientSn\n \t ) t WHERE (t.rechargeAmount + t.yieldAmount + t.cashCouponAmount - t.withdrawAmount - t.investAmount - t.availableBalance) != 0;\n\n\n"
]
]
}
“I grok in fullness.” Robert A. Heinlein, Stranger in a Strange Land
