What is set Trimspool on in Oracle?
SET TRIMOUT ON or SET TRIMSPOOL ON removes trailing blanks at the end of each displayed or spooled line. Setting these variables ON can reduce the amount of data written. However, if LINESIZE is optimal, it may be faster to set the variables OFF.
What is Trimspool in SQL?
The TRIMSPOOL setting controls whether SQL*Plus writes trailing spaces when spooling data to a file. The default setting is OFF, which causes SQL*Plus to write each line to the spool file in its entirety, trailing spaces and all.
What is set echo on?
Controls whether GO and STEP commands are recorded in the log window when they are not subcommands. The presence of long sequences of GO and STEP commands clutters the log window and provides little additional information. SET ECHO makes it possible to suppress the display of these commands.
How do I make the Oracle spool run faster?
sqlcode set pagesize 0 set linesize 410 SET trimspool ON set heading on set feedback off set echo off set termout off spool file_to_dump_into.
…
Specific to your script, here are a few possible ways to speed it up:
- Make sure LINESIZE is as small as possible.
- Don’t turn TRIMSPOOL on.
- Play around with ARRAYSIZE.
How do I remove leading zeros in PL SQL?
The Oracle TRIM function is used to remove all leading or trailing characters (or both) from a character string. If trim_character or trim_source is a character literal, then it is necessary to enclose it in single quotation marks. When no trim_character is specified, then the default value is a blank space.
How do you remove leading and trailing spaces in Oracle?
If you specify LEADING , then Oracle Database removes any leading characters equal to trim_character . If you specify TRAILING , then Oracle removes any trailing characters equal to trim_character . If you specify BOTH or none of the three, then Oracle removes leading and trailing characters equal to trim_character .
How can remove space in middle of string in Oracle?
Oracle TRIM() function removes spaces or specified characters from the begin, end or both ends of a string.
How can remove space from column in Oracle?
What is echo on and off?
The ECHO-ON and ECHO-OFF commands are used to enable and disable the echoing, or displaying on the screen, of characters entered at the keyboard. If echoing is disabled, input will not appear on the terminal screen as it is typed. By default, echoing is enabled.
What is @echo on in batch script?
To display the command prompt again, type echo on. To prevent all commands in a batch file (including the echo off command) from displaying on the screen, on the first line of the batch file type: @echo off. You can use the echo command as part of an if statement.
Can we use spool in PL SQL?
As long as this is just an anonymous block, you can use spool in a script you run thru sql*plus using the @ command. It wont work in a stored procedure but it does work in the way mentioned below.
Where are Oracle spools stored?
You can spool to a specific directory, e.g. spool c:\windows\temp\test. lst , and if you have it set up can use something like spool \\<aix-server>\<dir>\test. lst .
How do you remove leading and trailing zeros in Oracle?
How do you remove trailing spaces in SQL?
SQL Server TRIM() Function
The TRIM() function removes the space character OR other specified characters from the start or end of a string. By default, the TRIM() function removes leading and trailing spaces from a string.
How do I delete a trailing space in Oracle?
How do I remove white space in PL SQL?
To replace one or more white space characters by a single blank you should use {2,} instead of * , otherwise you would insert a blank between all non-blank characters.
How do I trim a space between strings in Oracle?
Answers. Use TRIM, LTRIM, RTRIM and REPLACE (if needed).
How can remove space from column in SQL?
The TRIM() function removes the space character OR other specified characters from the start or end of a string. By default, the TRIM() function removes leading and trailing spaces from a string. Note: Also look at the LTRIM() and RTRIM() functions.
What is CHR 32 in Oracle?
If the column is of CHAR(n) datatype and the string you have entered does not have n characters then Oracle will pad the data with space ( CHR(32) ) characters until it has exactly n characters.
Why is @echo off used?
What is @echo off in batch file?
batch-file Echo @Echo off
@echo off prevents the prompt and contents of the batch file from being displayed, so that only the output is visible. The @ makes the output of the echo off command hidden as well.
How do I spool a file in Oracle?
Using the Oracle spool command
- The “spool” command is used within SQL*Plus to direct the output of any query to a server-side flat file.
- SQL> spool /tmp/myfile.lst.
- Becuse the spool command interfaces with the OS layer, the spool command is commonly used within Oracle shell scripts.
How do I run a spool file?
In order to execute the Spool, you’ll need to run it as a script (for example, if you are using Oracle SQL Developer, you may press F5 to run the Spool as a script). Your CSV file will then get created at your specified path.
Where is spool file stored?
Advantage: Spool files are protected by the backup and recovery mechanisms of the database system. G: Spool requests are stored in the standard SAP “global” directory: /usr/sap/C11/SYS/global/ (UNIX Systems).
How do I remove leading zeros in SQL?
Basically it performs three steps: Replace each 0 with a space – REPLACE([CustomerKey], ‘0’, ‘ ‘) Use the LTRIM string function to trim leading spaces – LTRIM(<Step #1 Result>) Lastly, replace all spaces back to 0 – REPLACE(<Step #2 Result>, ‘ ‘, ‘0’)