How to get get Output of SQL query in a flat file using shell script

Question

我想使用外壳程序脚本自动执行一个包含多个SQL查询的SQL文件，同时我想将该SQl文件中最后一个查询的输出转换为任何平面文件。

Answer 1

This awk command will find the last semicolon-separated query in the file and pipe it to mysql

awk 'BEGIN {RS=";"} NF > 0 {query=$0; } END {print query}' file.sql | mysql -u username -p password > output.txt

The NF > 0 keeps it from setting query to the empty line after the last ; .

Answer 2

You can create a file that executes each query but only sends the output of the last one.

#!/bin/bash

mysql -h... -u... -p... -e 'query1' > /dev/null

mysql -h... -u... -p... -e 'query2' > /dev/null

mysql -h... -u... -p... -e 'query3' > /result.sql