通過命令行Impala查詢shell變量

Question

我正在while循環中運行impala查詢，並且爲此我創建了一個單獨的查詢文件，並且從我的shell腳本調用它我的問題是，我們可以通過shell變量匹配與查詢文件中的黑斑羚查詢。

A="INSERT_SBP_ME_VS_ME_INCOME_LAST_THIRTY_DAYS_Q"${Count} 
    echo "value of A is $A" 
      source ${SBP2_MNY_IN_LAST_THIRTY_DAYS_QF} 
${IMPALA_CON} -q "${${A}}" 

A value is like INSERT_SBP_ME_VS_ME_INCOME_LAST_THIRTY_DAYS_Q1 (as count is 1) 

I am doing this in this way but getting bad substitution error and I also tried 
    ${IMPALA_CON} -q "${A}" but not getting any successful result 

Answer 1

不知道這是你在找什麼。
下面是一個示例，你怎麼可能有存儲在一個文件
這可以通過黑斑羚-shell執行

$ cat test.sql 
select 10 + ${x}; 
$ export x=15 
$ echo "${x}" 
15 
$ query=`eval "echo \"$(<test.sql)\""` 
$ impala-shell <connection> -q "$query"