awk script to parse SQL from Pro*C program Post: 302868725

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Top Forums Shell Programming and Scripting awk script to parse SQL from Pro*C program Post 302868725 by Yoda on Monday 28th of October 2013 04:08:36 PM

10-28-2013

Moderator

Here is an awk approach based on some assumptions:

Code:

awk '
        {
                for ( i = 1; i <= NF; i++ )
                {
                        if ( $i == "FROM" )
                                F = 1
                        if ( ( F && $i ~ /SELECT/ ) || $i ~ /WHERE/ )
                                F = 0
                        if ( ( F && $i !~ /SELECT/ ) && $i !~ /FROM/ )
                        {
                                sub ( /,/, X, $i )
                                !T[$i]
                        }
                        if ( $i ~ /\./ )
                        {
                                split ( $i, A, "." )
                                TA[A[1]] = A[1]
                        }
                }
        }
        END {
                for ( k in T )
                {
                        if ( !(TA[k]) )
                                print k
                }
        }
' file.pc

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