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Top Forums Shell Programming and Scripting Need wrapper around mysql query Post 303003025 by Corona688 on Wednesday 6th of September 2017 05:00:28 PM
Old 09-06-2017
Well, you do, if you want to compare it more than once, since $? is overwritten every time you execute a program or statement.

This is an ideal place to use a case statement though:

Code:
case "$?" in
0) # statement zero code
   # statement zero code
   ;;
1) # statement one code
   # statement one code
   ;;
2) # statement two code
   # statement two code
   ;;
*) # All other cases
   # All other cases
   ;;
esac

This User Gave Thanks to Corona688 For This Post:
 

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EXECUTE(7)							   SQL Commands 							EXECUTE(7)

NAME
EXECUTE - execute a prepared query SYNOPSIS
EXECUTE plan_name [ (parameter [, ...] ) ] INPUTS plan_name The name of the prepared query to execute. parameter The actual value of a parameter to the prepared query. This must be an expression yielding a value of a type compatible with the data-type specified for this parameter position in the PREPARE statement that created the prepared query. DESCRIPTION
EXECUTE is used to execute a previously prepared query. Since prepared queries only exist for the duration of a session, the prepared query must have been created by a PREPARE statement executed earlier in the current session. If the PREPARE statement that created the query specified some parameters, a compatible set of parameters must be passed to the EXECUTE statement, or else an error is raised. Note that (unlike functions) prepared queries are not overloaded based on the type or number of their parameters: the name of a prepared query must be unique within a database session. For more information on the creation and usage of prepared queries, see PREPARE [prepare(7)]. COMPATIBILITY
SQL92 SQL92 includes an EXECUTE statement, but it is only for use in embedded SQL clients. The EXECUTE statement implemented by PostgreSQL also uses a somewhat different syntax. SQL - Language Statements 2002-11-22 EXECUTE(7)
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