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add an option to clear out the target table prior to moving data

This commit is contained in:
Paul Trowbridge 2023-02-01 16:29:53 -05:00
parent 24fad6aa04
commit e7b7d1bbba
1 changed files with 21 additions and 1 deletions
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22
app/src/main/java/jrunner/jrunner.java
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@ -20,6 +20,7 @@ public class jrunner {
String sq = "";
String dt = "";
Boolean trim = true;
Boolean clear = true;
Integer r = 0;
Integer t = 0;
String sql = "";
@ -38,7 +39,7 @@ public class jrunner {
Timestamp tsStart = null;
Timestamp tsEnd = null;
msg = "jrunner version 0.40";
msg = "jrunner version 0.41";
msg = msg + nl + "-scu source jdbc url";
msg = msg + nl + "-scn source username";
msg = msg + nl + "-scp source passowrd";
@ -48,6 +49,7 @@ public class jrunner {
msg = msg + nl + "-sq path to source query";
msg = msg + nl + "-dt fully qualified name of destination table";
msg = msg + nl + "-t trim text";
msg = msg + nl + "-c clear target table";
msg = msg + nl + "--help info";
//---------------------------------------parse args into variables-------------------------------------------------
@ -99,6 +101,9 @@ public class jrunner {
case "-t":
trim = true;
break;
case "-c":
clear = true;
break;
case "-v":
System.out.println(msg);
return;
@ -198,9 +203,24 @@ public class jrunner {
e.printStackTrace();
System.exit(0);
}
//-------------------------clear the target table if requeted----------------------------------------------------
if (clear) {
System.out.println("------------clear target table----------------------------");
sql = "DELETE FROM " + dt;
try {
stmtd = dcon.createStatement();
System.out.println(" " + sql);
stmtd.executeUpdate(sql);
} catch (SQLException e) {
e.printStackTrace();
System.out.println(sql);
System.exit(0);
}
}
System.out.println("------------row count-------------------------------------");
//-------------------------------build & execute sql-------------------------------------------------------------
try {
sql = "";
while (rs.next()) {
r++;
t++;