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问题现象

写了一个简单的shell脚本调用hive执行组装的sql，在执行时总是报cannot recognize input near '<EOF>' in select clause错误，单独在hive提示符下却能正常执行。

#!/bin/bash
keyname="type"
sql=" 
select tags['$keyname'] from user_tags
"

echo ${sql}

hive -e ${sql}

执行时打印的错误日志：

select tags['$keyname'] from user_tags

Logging initialized using configuration in jar:file:/opt/apache-hive-1.2.1-bin/lib/hive-common-1.2.1.jar!/hive-log4j.properties
NoViableAltException(-1@[])
    at org.apache.hadoop.hive.ql.parse.HiveParser_SelectClauseParser.selectClause(HiveParser_SelectClauseParser.java:1087)
    at org.apache.hadoop.hive.ql.parse.HiveParser.selectClause(HiveParser.java:45827)
    at org.apache.hadoop.hive.ql.parse.HiveParser.selectStatement(HiveParser.java:41495)
    at org.apache.hadoop.hive.ql.parse.HiveParser.regularBody(HiveParser.java:41402)
    at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementExpressionBody(HiveParser.java:40413)
    at org.apache.hadoop.hive.ql.parse.HiveParser.queryStatementExpression(HiveParser.java:40283)
    at org.apache.hadoop.hive.ql.parse.HiveParser.execStatement(HiveParser.java:1590)
    at org.apache.hadoop.hive.ql.parse.HiveParser.statement(HiveParser.java:1109)
    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:396)
    at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:308)
    at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1122)
    at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1170)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1059)
    at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1049)
    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.processLine(CliDriver.java:311)
    at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:708)
    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:498)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
FAILED: ParseException line 1:6 cannot recognize input near '<EOF>' '<EOF>' '<EOF>' in select clause