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smellman / gist:2e51b1cf449c499ad5deec454a16a7bc
Last active Mar 5, 2019 — forked from giannisp/gist:ebaca117ac9e44231421f04e7796d5ca
Upgrade PostgreSQL 9.6.5 to 10.0 and Postgis 2.3.x to 2.4.x using Homebrew (macOS)
View gist:2e51b1cf449c499ad5deec454a16a7bc
After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."
Database files have to be updated before starting the server, here are the steps that had to be followed:
# first stop force reload by launchctl
launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist
# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
ccgus / gist:6324222
Created Aug 23, 2013
Custom SQLite Functions
View gist:6324222
[db makeFunctionNamed:@"UTTypeConformsTo" maximumArguments:2 withBlock:^(sqlite3_context *context, int argc, sqlite3_value **argv) {
if (sqlite3_value_type(argv[0]) == SQLITE_TEXT) {
const unsigned char *a = sqlite3_value_text(argv[0]);
const unsigned char *b = sqlite3_value_text(argv[1]);
CFStringRef as = CFStringCreateWithCString(nil, (const char*)a, kCFStringEncodingUTF8);
CFStringRef bs = CFStringCreateWithCString(nil, (const char*)b, kCFStringEncodingUTF8);
sqlite3_result_int(context, UTTypeConformsTo(as, bs));
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