How to fix the uneven display in sqlplus?

If SQL*Plus appears messy, you can try the following methods to address it:

1. You can adjust the output format by using the SET command in SQL*Plus, such as setting the column width and alignment. For example, you can use the command SET COLWIDTH 10 to set the column width to 10 characters.
2. Using newline characters and tab characters for formatting: Utilizing newline characters (\n) and tab characters (\t) in SQL queries can help create better formatting in the output. For example, tab characters can be used in a SELECT statement to align columns: SELECT column1 || ‘\t’ || column2 FROM table1;
3. SQLPlus offers formatting commands such as COLUMN and BREAK to adjust the output format. The COLUMN command can be used to set the display format of columns, such as formatting numbers for a NUMBER type column. The BREAK command can be used to group output based on certain conditions.
4. Formatting using external tools: If SQL*Plus is unable to meet your requirements, you may consider using external tools to handle and format the output of SQL queries. For example, you can export query results to a text file and then use other text editors or scripting languages to manipulate and format that file.
5. Update your SQLPlus version: if you are using an older version of SQLPlus, there may be some display issues. Try updating to the latest version of SQL*Plus for better display effects.

In conclusion, these are some common methods for dealing with the messy display of SQL*Plus. You can choose the appropriate method based on the specific situation.