st = st[:len(st)-1]
if !hasWordAt(contentStr, sqlDoubleDollarKeyword, j) {
continue
}
st = append(st, sqlDoubleDollarKeyword[0])
j += len(sqlDoubleDollarKeyword) - 1
} else {
st = st[:len(st)-1]
j += len(sqlDoubleDollarKeyword) - 1
}
case sqlIfKeyword[0]: