12-10-2019
Your two parameters (which I have wrapped in ICODE tags for you) appear to be the same to me. Notwithstanding, I'm wondering if the table column in question is a string or a date. The output of DESC your_table_name ; will should you what it is defined as. If it is stored as a date field, then we can probably adjust the SELECT statement.
Can you show us your table structure, the query and some sample output that we need to logically compare? The way to do it will be to convert it to Unix time (number of seconds since the Epoch, 1/1/1970) as Neo says, and then it is a simple subtraction.
Thanks, in advance,
Robin
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consider this as a csv file.
H,0002,0002,20100218,17.25,P,barani
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
D,1,2,3,4,5,6,7,8,9,10,11
T,5
N
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RBASH(1) General Commands Manual RBASH(1)
NAME
rbash - restricted bash, see bash(1)
RESTRICTED SHELL
If bash is started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted. A restricted shell is
used to set up an environment more controlled than the standard shell. It behaves identically to bash with the exception that the follow-
ing are disallowed or not performed:
o changing directories with cd
o setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV
o specifying command names containing /
o specifying a file name containing a / as an argument to the . builtin command
o specifying a filename containing a slash as an argument to the -p option to the hash builtin command
o importing function definitions from the shell environment at startup
o parsing the value of SHELLOPTS from the shell environment at startup
o redirecting output using the >, >|, <>, >&, &>, and >> redirection operators
o using the exec builtin command to replace the shell with another command
o adding or deleting builtin commands with the -f and -d options to the enable builtin command
o using the enable builtin command to enable disabled shell builtins
o specifying the -p option to the command builtin command
o turning off restricted mode with set +r or set +o restricted.
These restrictions are enforced after any startup files are read.
When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.
SEE ALSO
bash(1)
GNU Bash-4.0 2004 Apr 20 RBASH(1)