我尝试在属性表中创建一个新字段,并在从字符转换为整数后将另一个字段的值放入其中,但无法获得正确的语法。我在MSYS中将其作为shell脚本运行。
cd D:/GIS_DataBase/CorineLC/shps_app_and_extr/
myfile=extr_and_app.shp
name=${myfile%.shp}
ogrinfo $myfile -sql "ALTER TABLE $name ADD COLUMN code_num int(3)"
ogrinfo $myfile -sql "UPDATE TABLE $name SET code_num = CONVERT(code_06 As int(3))"
错误消息(MSYS):
Kay@KAY-PC /c/users/kay/desktop/bash
$ sh calc_field_shp.sh
Warning 6: Unsupported column type 'int'. Defaulting to VARCHAR
INFO: Open of `extr_and_app.shp'
using driver `ESRI Shapefile' successful.
ERROR 1: SQL Expression Parsing Error: syntax error
INFO: Open of `extr_and_app.shp'
using driver `ESRI Shapefile' successful.
编辑-SQLite的另一种选择:
cd D:/GIS_DataBase/CorineLC/shps_app_and_extr/
myfile=extr_and_app.dbf
name=${myfile%.dbf}
ogrinfo $myfile -sql "ALTER TABLE $name DROP COLUMN code_num"
ogrinfo $myfile -sql "ALTER TABLE $name ADD COLUMN code_num integer(3)"
ogrinfo $myfile -dialect SQLite -sql "UPDATE $name SET code_num = CAST(code_06 As integer(3))"
错误信息:
Kay@KAY-PC /c/users/kay/desktop/bash
$ sh calc_field_shp.sh
INFO: Open of `extr_and_app.dbf'
using driver `ESRI Shapefile' successful.
INFO: Open of `extr_and_app.dbf'
using driver `ESRI Shapefile' successful.
ERROR 1: SQL Expression Parsing Error: syntax error
INFO: Open of `extr_and_app.dbf'
using driver `ESRI Shapefile' successful.
你遇到了什么错误?
—
RK
@RK,我将错误消息添加到操作中。
—
凯
您是否尝试过CAST而不是CONVERT?
—
dmci 2013年
我没有成功
—
凯