在sqlite3中显示多行消息

Question

我正在尝试使用echo，cat，read和printf命令在sqlite3中显示一些多行消息，但是我总是遇到错误。我想要的输出是这样的：

display the table in a text file:
.once -e
SELECT * from table1;

display the table in a spreadsheet:
.once -x
SELECT * from table1;

我尝试过，但是每个命令都会使输出混乱：

.shell echo "display the table in a text file:"
.shell echo ".once -e"
.shell echo "SELECT * from table1;"

.shell echo "display the table in a spreadsheet:"
.shell echo ".once -x"
.shell echo "SELECT * from table1;"

所以我尝试了：

.shell cat << EndOfMessage
display the table in a text file:
.once -e
SELECT * from table1;

display the table in a spreadsheet:
.once -x
SELECT * from table1;
EndOfMessage
;

和：

.shell read -r -d '' VAR << EndOfMessage

display the table in a text file:
.once -e
SELECT * from table1;

display the table in a spreadsheet:
.once -x
SELECT * from table1;

EndOfMessage
;
.shell echo "$VAR"

但都给出了几个错误。