Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Programming
»
Databases
»
SQLite: Get field names from table
Free Pascal
Website
Downloads
Wiki
Documentation
Bugtracker
Mailing List
Lazarus
Website
Downloads (Laz+FPC)
Packages (OPM)
FAQ
Wiki
Documentation (RTL/FCL/LCL)
Bugtracker
CCR Bugs
IRC channel
GIT
Mailing List
Other languages
Foundation
Website
Useful Wiki Links
Project Roadmap
Getting the Source
Screenshots
How to use the forum
About donations (wiki)
Bookstore
Computer Math and Games in Pascal
(preview)
Lazarus Handbook
Search
Advanced search
Recent
JEDI error but unit compi...
by
Thaddy
[
Today
at 09:30:33 pm]
Poll: Watches and Display...
by
Martin_fr
[
Today
at 09:22:47 pm]
Understanding and adjusti...
by
circular
[
Today
at 09:09:56 pm]
how to search in rxmemory...
by
rcmz
[
Today
at 08:45:16 pm]
Controlling the behavior ...
by
wp
[
Today
at 08:29:28 pm]
Offical launch of the 1 B...
by
Gustavo 'Gus' Carreno
[
Today
at 08:21:29 pm]
Dialog ShowModal and an i...
by
ASerge
[
Today
at 08:04:11 pm]
how to change the color f...
by
wp
[
Today
at 07:23:58 pm]
Dynarray initialization p...
by
Thaddy
[
Today
at 06:30:12 pm]
Project fails on run but ...
by
dseligo
[
Today
at 05:30:42 pm]
Zeos components. Had to c...
by
Fantablup
[
Today
at 04:17:13 pm]
[SOLVED] Completion box s...
by
furious programming
[
Today
at 04:12:26 pm]
[LAMW] How to create a ca...
by
af0815
[
Today
at 03:48:16 pm]
Complex package installat...
by
wp
[
Today
at 03:38:16 pm]
A "leisure" question on W...
by
gidesa
[
Today
at 03:17:10 pm]
Curling Pythagoras Tree: ...
by
AlexTP
[
Today
at 03:07:53 pm]
[SOLVED] Combined pointer...
by
CM630
[
Today
at 02:48:41 pm]
Using KeyPress event, how...
by
Zvoni
[
Today
at 02:24:42 pm]
a Unit problem?
by
Thaddy
[
Today
at 01:56:12 pm]
Any upgrades to fpWeb pag...
by
marcov
[
Today
at 12:50:25 pm]
Help needed with Cairo / ...
by
Roland57
[
Today
at 12:25:16 pm]
Configure JCF messages
by
DomingoGP
[
Today
at 11:26:55 am]
IDE instability on Raspbe...
by
rvk
[
Today
at 10:37:14 am]
Boleeman's projects are p...
by
AlexTP
[
Today
at 10:18:04 am]
Your best UI design - con...
by
circular
[
Today
at 09:36:11 am]
« previous
next »
Print
Pages: [
1
]
Author
Topic: SQLite: Get field names from table (Read 1816 times)
Milsa
Sr. Member
Posts: 309
SQLite: Get field names from table
«
on:
September 27, 2021, 07:54:59 pm »
I have this fragment of code:
Code: Pascal
[Select]
[+]
[-]
SQL
.
Text
:
=
Format
(
'SELECT * FROM [%s]'
,
[
Name
]
)
;
Open
;
while
not
EOF
do
begin
//detecting field names
Next
;
end
;
Close
;
Can I detect field names from TSQLQuery like "Fields[0].Name"?
Logged
I work with Lazarus 2.2.2, FPC 3.2.2, date 2022-05-15
This information is actual to: 28st Dec 2022
dseligo
Hero Member
Posts: 1196
Re: SQLite: Get field names from table
«
Reply #1 on:
September 28, 2021, 07:49:52 am »
This works with ZEOSlib:
Code: Pascal
[Select]
[+]
[-]
For
i
:
=
0
to
Fields
.
Count
-
1
do
showMessage
(
Fields
[
i
]
.
FieldName
)
;
Logged
Zvoni
Hero Member
Posts: 2319
Re: SQLite: Get field names from table
«
Reply #2 on:
September 28, 2021, 08:39:06 am »
Use "GetFieldNames" of TSQLite3Connection
of TSQLConnection (SQLite3Connection inherits from it)
--> TSQLite3Connection overrides the one from TSQLConnection
https://www.freepascal.org/daily/packages/fcl-db/sqlite3conn/tsqlite3connection.getfieldnames.html
https://www.freepascal.org/docs-html/fcl/sqldb/tsqlconnection.getfieldnames.html
EDIT: Alternative is to fire a PRAGMA-Call from a TSQLQuery-Object
Code: Pascal
[Select]
[+]
[-]
MySQLQuery
.
SQL
.
Text
:
=
'PRAGMA table_info(MyTableName)'
;
MySQLQuery
.
Open
;
«
Last Edit: September 28, 2021, 11:07:16 am by Zvoni
»
Logged
One System to rule them all, One Code to find them,
One IDE to bring them all, and to the Framework bind them,
in the Land of Redmond, where the Windows lie
---------------------------------------------------------------------
Code is like a joke: If you have to explain it, it's bad
Milsa
Sr. Member
Posts: 309
Re: SQLite: Get field names from table
«
Reply #3 on:
October 02, 2021, 01:40:49 pm »
Thank you very much. This is solution for me.
Logged
I work with Lazarus 2.2.2, FPC 3.2.2, date 2022-05-15
This information is actual to: 28st Dec 2022
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Programming
»
Databases
»
SQLite: Get field names from table
TinyPortal
© 2005-2018