达梦表字段、字段类型，精度比对及更改字段SQL生成：
- 依赖
xml
<!-- 达梦 Connector -->
<dependency>
<groupId>com.dameng</groupId>
<artifactId>DmJdbcDriver18</artifactId>
<version>8.1.3.62</version>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.7.0</version>
</dependency>-
数据库配置文件参考
url = jdbc:dm://xxxx:xxxx?schema=xxx&zeroDateTimeBehavior=convertToNull&useUnicode=true&characterEncoding=utf-8
username = SYSDBA
password = SYSDBA -
Java代码
java
package com.lhq.datacontrast;
import cn.hutool.db.Db;
import cn.hutool.db.DbUtil;
import cn.hutool.db.Entity;
import cn.hutool.db.ds.DSFactory;
import cn.hutool.setting.Setting;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.*;
@SpringBootApplication
public class DataContrastApplication {
public static void main(String[] args) throws SQLException {
Setting prodSetting = new Setting("classpath: config/prod.setting");
DataSource prodDs = DSFactory.create(prodSetting).getDataSource();
Setting devSetting = new Setting("classpath: config/dev.setting");
DataSource devDs = DSFactory.create(devSetting).getDataSource();
List<Entity> devTable = Db.use(devDs).query("select Table_Name from SYS.ALL_TABLES where OWNER = 'HEALTH_RECORDS'");
List<Entity> prodTable = Db.use(prodDs).query("select Table_Name from SYS.ALL_TABLES where OWNER = 'HZJJK_JBGW'");
List<String> names = new ArrayList<>();
for (Entity table : prodTable) {
names.add(table.getStr("table_name"));
}
for (Entity entity : devTable) {
if(entity.getStr("table_name").startsWith("GW_")){
String tableName = entity.getStr("table_name").replace("GW_","");
if(names.contains( tableName)) {
contrastTable(prodDs, devDs, entity.getStr("table_name").replace("GW_", ""), entity.getStr("table_name"));
}
}
}
}
private static void contrastTable(DataSource prodDs, DataSource devDs, String progTable, String devTable) throws SQLException {
List<Entity> devResult = Db.use(devDs).query("\n" +
"select * from all_tab_columns where Table_Name=? and OWNER = 'HEALTH_RECORDS';", devTable);
List<Entity> progResult = Db.use(prodDs).query("\n" +
"select * from all_tab_columns where Table_Name=? and OWNER = 'HZJJK_JBGW';", progTable);
Map<String, Entity> progMap = new HashMap<>();
for (Entity entity : progResult) {
progMap.put(entity.getStr("column_name"), entity);
}
Map<String, Entity> devMap = new HashMap<>();
for (Entity entity : devResult) {
devMap.put(entity.getStr("column_name"), entity);
}
for (String s : progMap.keySet()) {
if (devMap.containsKey(s)){
if ( progMap.get(s).getStr("data_length").equals(devMap.get(s).getStr("data_length"))
) {
// 长度相同
if(progMap.get(s).getStr("data_type").equals(devMap.get(s).getStr("data_type"))
|| (Objects.equals(progMap.get(s).getStr("data_type"), "VARCHAR") && Objects.equals(devMap.get(s).getStr("data_type"), "VARCHAR2"))
|| (Objects.equals(progMap.get(s).getStr("data_type"), "VARCHAR2") && Objects.equals(devMap.get(s).getStr("data_type"), "VARCHAR"))){
continue;
}else{
Entity entity = progMap.get(s);
System.out.println(String.format("字段名：%s，数据类型不一致，prod:%s->%s->%s,dev:%s->%s->%s",
s, progTable,
progMap.get(s).getStr("data_type"), progMap.get(s).getStr("data_length"),
devTable,
devMap.get(s).getStr("data_type"), devMap.get(s).getStr("data_length")));
System.out.println(String.format("ALTER TABLE \"%s\".\"%s\" MODIFY \"%s\" %s(%s);", "HEALTH_RECORDS",
devTable,s,entity.getStr("data_type"),entity.getStr("data_length")) );
}
} else {
if(progMap.get(s).getStr("data_type").equals(devMap.get(s).getStr("data_type"))){
// Entity entity = progMap.get(s);
// System.out.println(String.format("字段名：%s，数据长度不一致，prod:%s->%s->%s,dev:%s->%s->%s",
// s, progTable,
// progMap.get(s).getStr("data_type"), progMap.get(s).getStr("data_length"),
// devTable,
// devMap.get(s).getStr("data_type"), devMap.get(s).getStr("data_length")));
// System.out.println(String.format("ALTER TABLE \"%s\".\"%s\" MODIFY \"%s\" %s(%s);", "HEALTH_RECORDS",
// devTable,s,entity.getStr("data_type"),entity.getStr("data_length")) );
// System.out.println("commit ");
}else{
Entity entity = progMap.get(s);
System.out.println(String.format("字段名：%s，数据长度不一致,类型也不一致，prod:%s->%s->%s,dev:%s->%s->%s",
s, progTable,
progMap.get(s).getStr("data_type"), progMap.get(s).getStr("data_length"),
devTable,
devMap.get(s).getStr("data_type"), devMap.get(s).getStr("data_length")));
System.out.println(String.format("ALTER TABLE \"%s\".\"%s\" MODIFY \"%s\" %s(%s);", "HEALTH_RECORDS",
devTable,s,entity.getStr("data_type"),entity.getStr("data_length")) );
}
}
}else{
Entity entity = progMap.get(s);
System.out.println(String.format("字段名：%s 在表\"%s\"中不存在", s, devTable));
System.out.println(String.format("ALTER TABLE \"%s\".\"%s\" ADD %s %s(%s);","HEALTH_RECORDS",
devTable,s,entity.getStr("data_type"),entity.getStr("data_length")) );
System.out.println(String.format("COMMENT ON COLUMN \"%s\".\"%s\".\"%s\" IS '%s';","HEALTH_RECORDS",devTable,s, getComments(prodDs, progTable,s)) );
System.out.println("commit;\n");
}
}
}
private static String getComments(DataSource ds, String table, String s) throws SQLException {
List<Entity> query = Db.use(ds).query("select COMMENTS from all_col_comments where " +
"OWNER='目标库' and TABLE_NAME =? and COLUMN_NAME = ?;", table, s);
if(query.size() == 0 ){
return null;
}
return query.get(0).getStr("COMMENTS");
}
}