使用java代码编写脚本,把oracle建表语句变成hive建表语句
java代码
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class O2H {
public static void main(String[] args) throws Exception {
getFileContentThree("oracle.sql");
}
public static void getFileContentThree(String str) throws IOException {
Scanner in = new Scanner(new File("D:\\Ideaprojects\\bigdata15_0612\\data\\oracle_sql\\"+str));
while (in.hasNextLine()) {
String s = in.nextLine();
String s1 = s.replaceAll("\"", "");
String s2 = s1.replaceAll("VARCHAR2\\(64 BYTE\\)", "string");
String s3 = s2.replaceAll("NVARCHAR2\\(200\\)", "string");
String s4 = s3.replaceAll("VARCHAR2\\(2000 BYTE\\)", "string");
String s5 = s4.replaceAll("VARCHAR2\\(500 BYTE\\)", "string");
String s6 = s5.replaceAll("VARCHAR2\\(200 BYTE\\)", "string");
String s7 = s6.replaceAll("CLOB", "string");
String s8 = s7.replaceAll("VARCHAR2\\(64 BYTE\\)", "string");
String s9 = s8.replaceAll("TIMESTAMP\\(6\\)", "timestamp");
String s10 = s9.replaceAll("NVARCHAR2\\(255\\)", "string");
String s11 = s10.replaceAll("CHAR\\(1 BYTE\\)", "string");
String s12 = s11.replaceAll("DEFAULT '0' NOT NULL", "");
String s13 = s12.replaceAll("NOT NULL", "");
String s14 = s13.replaceAll("TEST\\.", "ODS_");
String s15 = s14.replaceAll("VARCHAR2\\(255 BYTE\\)", "string");
String s16 = s15.replaceAll("VARCHAR2\\(1000 BYTE\\)", "string");
String s17 = s16.replaceAll("NUMBER", "double");
String s18 = s17.replaceAll("VARCHAR2\\(400 BYTE\\)", "string");
String s19 = s18.replaceAll("VARCHAR2\\(2550 BYTE\\)", "string");
String s20 = s19.replaceAll("NVARCHAR2\\(64\\)", "string");
String s21 = s20.replaceAll("NVARCHAR2\\(2000\\)", "string");
String s22 = s21.replaceAll("DEFAULT \'\'", "");
String s23 = s22.replaceAll("VARCHAR2\\(1 BYTE\\)", "string");
String s24 = s23.replaceAll("VARCHAR2\\(100 BYTE\\)", "string");
String s25 = s24.replaceAll("VARCHAR2\\(4000 BYTE\\)", "string");
String s26 = s25.replaceAll("NVARCHAR2\\(500\\)", "string");
String s27 = s26.replaceAll("NVARCHAR2\\(100\\)", "string");
String s28 = s27.replaceAll("NUMBER\\(10,0\\)", "double");
String s29 = s28.toLowerCase();
String s30 = s29.replaceAll("\\)", ");");
String s31 = s30.replaceAll("blob", "string");
String s32 = s31.replaceAll("long", "string");
System.out.println(s32);
}
}
}
测试oracle.sql
CREATE TABLE "TEST"."ORACLE" (
"ID" VARCHAR2(64 BYTE) NOT NULL,
"CATEGORY_ID" VARCHAR2(64 BYTE) NOT NULL,
"CONTENT_ID" VARCHAR2(64 BYTE) NOT NULL,
"TITLE" VARCHAR2(255 BYTE),
"CONTENT" VARCHAR2(255 BYTE),
"NAME" VARCHAR2(100 BYTE),
"CREATE_DATE" TIMESTAMP(6) NOT NULL
)
生成hive创表语句
create table ods_oracle (
id string ,
category_id string ,
content_id string ,
title string,
content string,
name string,
create_date timestamp
);
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