06-14-2005
Quote:
Originally Posted by yongho
Question: I just started learning shell scripting a few days ago and I was under the assumption that you didn't need to typeset anything.
you don't.
if you
don't,
count=$((count + 1))
becomes
count=$((
$count + 1))
Quote:
Originally Posted by yongho
One of my previous counters looked like this (in a while statement, not an if statement:
var1=`expr $var1 + $var2`
..and it worked.
this
NOT using ksh/bash
builtin capabilities for doing simple integer math.
Quote:
Originally Posted by yongho
But when I tried the expr command in the if statement, it didn't increment at all. Would you know why this is? Could it be because once you enter an if statement, you must use different rules?
nope, that's not it.
are you saying that the 'expr ' increment
did not work, but the 'count=$((count+1))'
did?
there must be something else different in your 'while' loop.
is your 'while' loopbeing
piped with data?
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LEARN ABOUT CENTOS
spi_execute_plan
SPI_EXECUTE_PLAN(3) PostgreSQL 9.2.7 Documentation SPI_EXECUTE_PLAN(3)
NAME
SPI_execute_plan - execute a statement prepared by SPI_prepare
SYNOPSIS
int SPI_execute_plan(SPIPlanPtr plan, Datum * values, const char * nulls,
bool read_only, long count)
DESCRIPTION
SPI_execute_plan executes a statement prepared by SPI_prepare or one of its siblings. read_only and count have the same interpretation as
in SPI_execute.
ARGUMENTS
SPIPlanPtr plan
prepared statement (returned by SPI_prepare)
Datum * values
An array of actual parameter values. Must have same length as the statement's number of arguments.
const char * nulls
An array describing which parameters are null. Must have same length as the statement's number of arguments. n indicates a null value
(entry in values will be ignored); a space indicates a nonnull value (entry in values is valid).
If nulls is NULL then SPI_execute_plan assumes that no parameters are null.
bool read_only
true for read-only execution
long count
maximum number of rows to return, or 0 for no limit
RETURN VALUE
The return value is the same as for SPI_execute, with the following additional possible error (negative) results:
SPI_ERROR_ARGUMENT
if plan is NULL or invalid, or count is less than 0
SPI_ERROR_PARAM
if values is NULL and plan was prepared with some parameters
SPI_processed and SPI_tuptable are set as in SPI_execute if successful.
PostgreSQL 9.2.7 2014-02-17 SPI_EXECUTE_PLAN(3)