#!/bin/bash
help() {
echo 'Sqlite3NCSV: view sqlite3 DB with ncsv.
    Usage:  sqlite3ncsv [FILE] [TABLE/QUERY/-l]
    
    first argument:  sqlite3 file
    second, optional argument: 
       TABLE: If not given, first in schema used.
       QUERY: If the second argument contains spaces, it is assumed to be a query.
       -l: List table names

    note: will try for tabview if ncsv not installed
    '
}
[[ "$1" == "-h" ]] && {
    help; exit
}
[[ -f "$1" ]] || {
    help;    exit
}

sqlfile="$1"
[[ "$2" == "-l" ]] && {
    sqlite3 "$sqlfile" "SELECT name FROM sqlite_master WHERE name NOT LIKE 'sqlite_%'"
    exit
}

[[ -z "$2" ]] && {
    table=$( sqlite3 "$sqlfile" "SELECT name FROM sqlite_master WHERE name NOT LIKE 'sqlite%' LIMIT 1;" )
} || {
    table="$2"
}
[[ "$table" = "${table% *}" ]] && {
    query="SELECT * FROM $table;"
} || {
    query="$table"
}
VIEWER=ncsv
which ncsv > /dev/null || {
    VIEWER="tabview -w max -"
    which tabview > /dev/null || VIEWER="cat -"
}

sqlite3 -header -separator '	' -nullvalue NA "$sqlfile" "$query" | $VIEWER