用shell抽取，更新db2的数据

#SQL文定义

SQL="SELECT AAA, BBB, CCC FROM MYTBL1"

#执行SQL

SDATA=`db2 "$SQL"`

#返回值判断

if [ $? -ne 0 ]

then

#显示db2返回的错误信息

echo "$SDATA"

exit 1

fi

#对取得的数据进行处理。

echo "$SDATA" | sed -e '4,/^$/!d;/^$/d' |

while read AAA BBB CCC

do

  echo "AAA IS $AAA, BBB IS $BBB, CCC IS $CCC"

done

#取得数据件数

echo "$SDATA" | sed -n -e '/^$/{1,3d;n;s/[^0-9]*\([0-9]*\)[^0-9]*/\1/;p;}' | read CNT

echo "The count of selected data is $CNT."

exit 0

SQL="UPDATE MYTBL1 SET AAA='2005',BBB='05',CCC='12'"

#执行SQL

SDATA=`db2 -a "$SQL"`

#取得SQLCODE

echo "$SDATA" | sed -n -e 's/^.*sqlcode: \([-,0-9][0-9]*\).*/\1/p' | read SQLCODE

echo "Sqlcode is $SQLCODE."

#取得SQLSTATE

echo "$SDATA" | sed -n -e 's/^.*sqlstate: \([-,0-9][0-9]*\).*/\1/p' | read SQLSTATE

echo "Sqlstate is $SQLSTATE."

#取得更新件数(即sqlerrd的第三个值)

echo "$SDATA" | sed -n -e '/sqlerrd/s/^.*(3) \([-,0-9][0-9]*\).*/\1/p' | read UPDCNT

echo "Updated data's count is $UPDCNT."

#取得sqlerrd的第五个值

echo "$SDATA" | sed -n -e '/sqlerrd/{n;s/^.*(5) \([-,0-9][0-9]*\).*/\1/;p;}' | read SQLERRD5

echo "Sqlerrd(5) is $SQLERRD5."