堆棧內存溢出
  簡體   English   中英

如何在bash腳本中轉義方括號和連字符

[英]How to escape square bracket and hyphen in bash script

 原文  2018-04-11 23:41:00  9   2    bash/ hive/ hiveql

問題描述

以下是我擁有的Bash腳本的代碼片段： 

APP_ID="get_json_object(mobile_attributes, '$.id')"
PLATFORM="parse_user_agent(user_agent, 'os')"

hive << EOF

INSERT OVERWRITE TABLE new_mobile_app_ids
SELECT
   t.app_id,
FROM
(
    SELECT
       ${APP_ID} as app_id,
    FROM
       sourcetable
    WHERE
       ${APP_ID} RLIKE
         CASE WHEN ${PLATFORM} = 'IOS' THEN
           '[0-9]'
         ELSE
           '[^0-9]'
         END
) t;

EOF

如何在最后幾行中轉義[ ， ] ， - ， ^符號？ 我已經嘗試將\\放在所有人之前，但這不起作用...

編輯：我收到以下Hive錯誤，在添加上述WHERE子句后開始出現： 

NoViableAltException(13@[323:1: atomExpression : ( ( KW_NULL )=> KW_NULL -> TOK_NULL | ( constant )=> constant | castExpression | caseExpression | whenExpression | ( functionName LPAREN )=> function | tableOrColumn | LPAREN ! expression RPAREN !);])
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser$DFA32.specialStateTransition(HiveParser_IdentifiersParser.java)
    at org.antlr.runtime.DFA.predict(DFA.java:80)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.atomExpression(HiveParser_IdentifiersParser.java:6178)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceFieldExpression(HiveParser_IdentifiersParser.java:6384)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceUnaryPrefixExpression(HiveParser_IdentifiersParser.java:6769)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceUnarySuffixExpression(HiveParser_IdentifiersParser.java:6829)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceBitwiseXorExpression(HiveParser_IdentifiersParser.java:7013)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceStarExpression(HiveParser_IdentifiersParser.java:7173)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedencePlusExpression(HiveParser_IdentifiersParser.java:7333)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceAmpersandExpression(HiveParser_IdentifiersParser.java:7484)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceBitwiseOrExpression(HiveParser_IdentifiersParser.java:7635)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceEqualExpression(HiveParser_IdentifiersParser.java:8165)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceNotExpression(HiveParser_IdentifiersParser.java:9178)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceAndExpression(HiveParser_IdentifiersParser.java:9297)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceOrExpression(HiveParser_IdentifiersParser.java:9456)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.expression(HiveParser_IdentifiersParser.java:6106)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.whenExpression(HiveParser_IdentifiersParser.java:4700)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.atomExpression(HiveParser_IdentifiersParser.java:6266)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceFieldExpression(HiveParser_IdentifiersParser.java:6384)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceUnaryPrefixExpression(HiveParser_IdentifiersParser.java:6769)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceUnarySuffixExpression(HiveParser_IdentifiersParser.java:6829)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceBitwiseXorExpression(HiveParser_IdentifiersParser.java:7013)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceStarExpression(HiveParser_IdentifiersParser.java:7173)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedencePlusExpression(HiveParser_IdentifiersParser.java:7333)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceAmpersandExpression(HiveParser_IdentifiersParser.java:7484)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceBitwiseOrExpression(HiveParser_IdentifiersParser.java:7635)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceEqualExpression(HiveParser_IdentifiersParser.java:8291)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceNotExpression(HiveParser_IdentifiersParser.java:9178)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceAndExpression(HiveParser_IdentifiersParser.java:9328)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.precedenceOrExpression(HiveParser_IdentifiersParser.java:9456)
    at org.apache.hadoop.hive.ql.parse.HiveParser_IdentifiersParser.expression(HiveParser_IdentifiersParser.java:6106)
    at org.apache.hadoop.hive.ql.parse.HiveParser.expression(HiveParser.java:46050)
    at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.searchCondition(HiveParser_FromClauseParser.java:6638)
    at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.whereClause(HiveParser_FromClauseParser.java:6546)
    at org.apache.hadoop.hive.ql.parse.HiveParser.whereClause(HiveParser.java:45943)
    at org.apache.hadoop.hive.ql.parse.HiveParser.selectStatement(HiveParser.java:41673)
    at org.apache.hadoop.hive.ql.parse.HiveParser.regularBody(HiveParser.java:41532)
    at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementExpressionBody(HiveParser.java:40543)
    at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementExpression(HiveParser.java:40413)
    at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.subQuerySource(HiveParser_FromClauseParser.java:5308)
    at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.fromSource(HiveParser_FromClauseParser.java:3742)
    at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.joinSource(HiveParser_FromClauseParser.java:1874)
    at org.apache.hadoop.hive.ql.parse.HiveParser_FromClauseParser.fromClause(HiveParser_FromClauseParser.java:1519)
    at org.apache.hadoop.hive.ql.parse.HiveParser.fromClause(HiveParser.java:45944)
    at org.apache.hadoop.hive.ql.parse.HiveParser.selectStatement(HiveParser.java:41646)
    at org.apache.hadoop.hive.ql.parse.HiveParser.regularBody(HiveParser.java:41360)
    at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementExpressionBody(HiveParser.java:40543)
    at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementExpression(HiveParser.java:40413)
    at org.apache.hadoop.hive.ql.parse.HiveParser.execStatement(HiveParser.java:1720)
    at org.apache.hadoop.hive.ql.parse.HiveParser.statement(HiveParser.java:1142)
    at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:202)
    at org.apache.hadoop.hive.ql.parse.ParseDriver.parse(ParseDriver.java:166)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:397)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:309)
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1141)
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1189)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1078)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1068)
    at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:213)
    at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:165)
    at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:376)
    at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:736)
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:681)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
FAILED: ParseException line 26:0 cannot recognize input near '_object' '(' 'mobile_attributes' in expression specification

但是，很奇怪的是，如果我直接在Hive中輸入相同的查詢並運行它，它將運行良好。 這就是為什么我覺得有些Bash轉義錯誤不適合我。

2 個解決方案

解決方案1
 0  2018-04-11 23:52:30

這些字符不需要在Bash上下文中轉義。 如果用cat替換hive ，則會得到以下信息： 

INSERT OVERWRITE TABLE 
SELECT
   t.app_id,
FROM
(
    SELECT
       get_json_object(mobile_attributes, '$.id') as app_id,
    FROM
       sourcetable
    WHERE
       get_json_object(mobile_attributes, '$.id') RLIKE
         CASE WHEN parse_user_agent(user_agent, 'os') = 'IOS' THEN
           '[0-9]'
         ELSE
           '[^0-9]'
         END
) t;

如果遇到SQL語法錯誤，請提供您使用的數據庫和錯誤消息。

解決方案2
 0  2018-04-12 00:17:00

修改where子句以使用or代替case表達式。 就目前情況而言，模式不會像case那樣傳遞。 

WHERE (${PLATFORM} = 'IOS' and ${APP_ID} RLIKE '[0-9]')
OR (${PLATFORM} <> 'IOS' and ${APP_ID} RLIKE '[0-9]')

暫無
暫無

聲明:本站的技術帖子網頁，遵循CC BY-SA 4.0協議，如果您需要轉載，請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.

相關問題 如何逃脫sed中的方括號 如何在Bash中比較包含方括號的字符串 如何在AWS CLI Bash中轉義大括號 帶方括號字符串的bash數組 如何在bash腳本中轉義字符串 bash腳本連字符運算符和方括號 在bash postgresql psql命令行中轉義連字符 將bash中的bash轉義為方括號 bash [[[a] == [a]]]不是真的嗎？ 方括號影響比較結果 bash腳本參數中是否允許使用連字符（-）？
相關標簽
 
粵ICP備18138465號  © 2020-2024 STACKOOM.COM