python 3.x - How to enable FTS5 search a string with ".", "_" and "0-9"? -


i have table holding 300k records of strings using alphanumeric, digit, dot, underscore , brackets [].

i use fts5 extension sqlite3 enable fast search on table. how create fts virtual table:

database = sqlite3.connect("mydb.db") db_cursor = database.cursor() db_cursor.execute("create virtual table field_names using fts5 (full_path)")

i adding ~300k records using below code in loop:

database.execute("insert field_names(full_path) values (?)", (field_path,))

sample records:

a.extbootrecord.field_db0     a.extbootrecord.field_db1     a.extbootrecord.field_db8     a.extbootrecord.field_db9     a.extbootrecord.field_db10    a.extbootrecord.field_db11    a.extbootrecord.field_db12    a.extbootrecord.field_db15

using following query:

db_cursor.execute("select full_path field_names field_names = '\"%s\"'" % search_phrase) return_list = list()  entries = db_cursor.fetchmany(100) while entries:     return_list.extend([entry[0] entry in entries])     entries = db_cursor.fetchmany(100)

with following search_phrase yields following:

  1. ext : nothing
  2. extbootrecord : records
  3. extbootrecrd. : records
  4. extbootrecord.fie : nothing
  5. extbootrecord.field : records
  6. extbootrecord.field_db1 : a.extbootrecord.field_db1 record, expect field_db1, field_db10, field_db11... returned

seems missing fts configuration consume ., _ , 0-9 valid characters part of token.

i tried configurating fts tokenizer using tokenize = \"unicode61 tokenchars '_.'\" in creation statement, no luck.

what missing?


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more