# PostgreSQL
Ermöglicht das Ausführen von SELECT- und INSERT-Abfragen auf Daten, die auf einem entfernten PostgreSQL-Server gespeichert sind.
# Syntax
postgresql('host:port', 'database', 'table', 'user', 'password'[, `schema`])
Argumente
host:port— Adresse des PostgreSQL-Servers.database— Name der entfernten Datenbank.table— Name der entfernten Tabelle.user— PostgreSQL-Benutzer.password— Benutzerpasswort.schema- Nicht standardmäßiges Tabellenschema. Optional.
Unterstützt mehrere Replikate, die durch | aufgelistet werden müssen. Zum Beispiel:
SELECT name FROM postgresql(`postgres_host{1|2|3}:5432`, '[postgres_database]', '[postgres_table]', '[postgres_user]', '[postgres_password]', '[postgres_schema]');
oder
SELECT name FROM postgresql(`postgres_host1:3306|postgres_host2:3306|postgres_host3:5432`, '[postgres_database]', '[postgres_table]', '[postgres_user]', '[postgres_password]', '[postgres_schema]');
Unterstützt Replikatpriorität für PostgreSQL-Wörterbuchquelle. Je größer die Zahl in der Zuordnung, desto geringer ist die Priorität. Die höchste Priorität ist 0.
# Rückgabewert
Ein Tabellenobjekt mit den gleichen Spalten wie die ursprüngliche PostgreSQL-Tabelle.
# Beispiele
# Tabelle in PostgreSQL
# CREATE TABLE
postgres=> CREATE TABLE laion_dataset (
id serial,
url character varying(2048) null,
caption character varying(2048) null,
similarity float null,
image_embedding vector(512) not null,
text_embedding vector(512) not null,
constraint laion_dataset_not_null_pkey primary key (id)
);
CREATE TABLE
# INSERT
postgres=> INSERT INTO laion_dataset (id, url, caption, similarity, image_embedding, text_embedding) VALUES (1, 'https://chairish-prod.global.ssl.fastly.net/image/product/sized/188616b7-8743-452f-80f7-f94fee39830e/vintage-1970s-pottery-face-masks-a-pair-5154?aspect=fit&width=320&height=320', 'Vintage 1970 s Pottery Face Masks - A Pair', 0.3163678050041199, '[-0.02861, -0.004993, 0.0176, -0.0248, 0.03488, -0.015305, 0.01443, 0.04288, 0.010445, 0.04367, -0.001831, -0.03995, -0.05573, 0.01904, -0.01917, -0.01417, 0.02216, 0.02058, 0.01971, 0.00787, -0.02325, 0.04266, -0.03818, -0.00986, -0.05045, 0.03848, 0.001489, 0.04782, -0.00926, -0.04608, 0.03143, -0.05823, 0.008095, 0.00861, -0.0786, 0.00556, 0.01193, -0.00713, 0.0177, -0.0632, -0.03583, 0.02283, 0.00988, 0.02643, -0.015434, -0.03186, -0.01237, 0.02002, 0.0462, -0.04834, 0.005222, 0.02295, 0.0285, -0.02783, -0.0466, 0.011475, -0.03017, -0.01006, -0.009895, -0.013176, 0.00468, -0.0537, 0.0731, -0.02336, -0.01278, -0.01662, 0.02805, 0.001102, -0.02553, 0.00408, -0.02647, 0.02095, 0.02165, -0.03635, 0.010445, 0.02252, -0.08154, -0.006218, 0.002993, 0.003038, 0.001144, -0.0384, -0.02321, -0.0792, -0.002878, 0.022, 0.084, 0.005867, -0.06744, -0.01596, -0.00377, -0.01888, -0.635, 0.07874, 0.0424, 0.003754, -0.04828, -0.01857, -0.005497, 0.0499, 0.05206, -0.02397, 0.04355, 0.0348, -0.0191, 0.01463, -0.1586, -0.05652, -0.02994, 0.03043, 0.02791, -0.01836, -0.02188, -0.002123, -0.01904, -0.0669, 0.003218, -0.02531, -0.0292, -0.0292, 0.04025, 0.00588, 0.04208, 0.01376, 0.0261, 0.02986, 0.011696, 0.013954, -0.00822, 0.00972, 0.01733, -0.02048, -0.02669, 0.09174, 0.07904, 0.03665, 0.01399, -0.00611, -0.03882, -0.01433, -0.0461, 0.04712, -0.0482, -0.0403, -0.03888, 0.01027, 0.00677, -0.005577, -0.02892, 0.01328, -0.02522, -0.0386, 0.0808, -0.02612, -0.0035, -0.04395, -0.0212, -0.0068, -0.002234, -0.01081, -0.05173, -0.02814, -0.02695, -0.04825, -0.03592, -0.01816, 0.03943, -0.002943, -0.01345, -0.0173, -0.015015, -0.002201, 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-0.06323, 0.03134, 0.03232, 0.003, 0.007042, 0.0006247, 0.01886, -0.079, 0.0332, -0.04803, -0.013954, -0.0269, -0.04187, 0.02051, 0.0248, -0.001965, -0.03061, -0.002272, -0.01347, -0.02258, 0.00449, 0.0865, -0.02834, 0.0211, -0.0339, -0.02588, 0.02864, 0.0253, -0.01872, 0.007835, 0.01287, 0.006966, 0.0119, -0.04385, -0.01584, -0.000661, 0.04358, -0.0829, 0.01293, 0.004208, -0.02608, -0.00766, 0.0386, 0.0003712, -0.01765, -0.001041, -0.0239, 0.03888, 0.03111, 0.01732, 0.02141, 0.04898, -0.04422, -0.084, 0.03387, 0.02895, -0.03046, 0.02414, 0.02135, 0.03134, 0.0422, -0.016, 0.04092, -0.005135, -0.04648, 0.04117, -0.000757, -0.02518, 0.01878, 0.02768, 0.02682, -0.02588, -0.05753, 0.04312, 0.004593, -0.01788, 0.03262, 0.02367, -0.0354, 0.003466, 0.0419, -0.0166, -0.00856, 0.03415, 0.004856, -0.04807, 0.003626, 0.0001568, 0.03333, -0.003765, 0.013824, -0.002298, -0.01945, 0.01161, 0.005756, -0.000729, -0.009575, 0.001631, 0.003183, 0.01486, -0.03232, 0.011765, -0.01243, 0.003016, 0.03003, 0.03687, 0.06854, -0.04706, -0.04187, 0.01298, -0.0349, 0.00975, -0.05093, -0.01807, 0.00795, -0.002728, -0.012215, 0.04282, -0.00955, 0.007267, -0.013954, 0.04678, -0.01324, -0.01678, -0.02887, 0.01982, -0.01622, -0.005173, 0.05432, -0.02643, -0.03017]', '[0.002466, -0.0615, -0.03017, -0.01123, 0.01449, -0.02669, 0.0602, -0.004955, -0.0777, -0.015274, 0.03552, -0.013725, -0.0636, 0.005867, 0.02367, 0.01272, 0.05316, 0.06964, 0.0467, 0.02219, -0.01195, 0.01836, -0.04947, -0.03568, 0.02953, -0.05347, -0.00697, 0.0323, 0.01721, 0.006657, -0.002981, -0.05865, 0.01234, -0.0334, -0.1311, 0.03857, 0.01744, -0.00315, 0.05902, 0.0219, 0.007423, 0.00909, -0.0292, 0.0695, -0.001302, -0.007534, 0.02986, 0.01405, 0.05807, -0.003605, -0.01706, 0.0397, -0.02608, -0.02034, 0.1096, -0.04535, 0.01525, -0.066, 0.03485, 0.006077, -0.02531, 0.02075, 0.0576, -0.0889, 0.00256, 0.02467, 0.007263, 0.02419, -0.041, -0.02106, 0.0945, -0.002798, 0.0326, -0.02472, -0.03552, 0.0671, -0.0657, 0.0442, 0.001114, 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0.06305, -0.03915, 0.0167, -0.0367, 0.09296, -0.06757, 0.03607, -0.0724, 0.02461, 0.02708, 0.003849, -0.0576]');
INSERT 0 1
# SELECT
postgres=> SELECT id, caption FROM laion_dataset;
(1 row)
id | caption
----+--------------------------------------------
1 | Vintage 1970 s Pottery Face Masks - A Pair
# Daten aus Postgres auswählen
SELECT * FROM postgresql('[host:port]', '[database]', 'laion_dataset', '[postgres_user]', '[postgres_password]') WHERE id = 1;
| id | url | caption | similarity | image_embedding | text_embedding |
|----|-----|---------|------------|-----------------|----------------|
| 1 | https://chairish-prod.global.ssl.fastly.net/image/product/sized/188616b7-8743-452f-80f7-f94fee39830e/vintage-1970s-pottery-face-masks-a-pair-5154?aspect=fit&width=320&height=320 | Vintage 1970s Pottery Face Masks - A Pair | 0.31636780500412 | [-0.02861,-0.004993,0.0176,-0.0248,0.03488,... | [0.002466,-0.0615,-0.03017,-0.01123,0.01449,... |
# Daten von der Postgres-Tabelle in die MyScale-Tabelle kopieren
# MyScale-TABELLE ERSTELLEN
CREATE TABLE default.laion_dataset
(
`id` Int64,
`url` String,
`caption` String,
`similarity` Nullable(Float32),
`image_embedding` Array(Float32),
CONSTRAINT check_length CHECK length(image_embedding) = 512,
`text_embedding` Array(Float32),
CONSTRAINT check_length CHECK length(text_embedding) = 512
)
ENGINE = MergeTree
ORDER BY id;
# EINFÜGEN
INSERT INTO default.laion_dataset
SELECT id, url, caption, similarity, image_embedding, text_embedding
FROM postgresql('[host:port]','[database]', 'laion_dataset', '[postgres_user]', '[postgres_password]');
# AUSWÄHLEN
SELECT * FROM default.laion_dataset;
| id | url | caption | similarity | image_embedding | text_embedding |
|----|-----|---------|------------|-------------------|-------------------|
| 1 | https://chairish-prod.global.ssl.fastly.net/image/product/sized/188616b7-8743-452f-80f7-f94fee39830e/vintage-1970s-pottery-face-masks-a-pair-5154?aspect=fit&width=320&height=320 | Vintage 1970s Pottery Face Masks - A Pair | 0.3163678 | [-0.02861, -0.004, 0.017, -0.024, 0.034, ... | [0.002466, -0.0615, -0.03017, -0.011, 0.014, ... |
# Einfügen
# INSERT
INSERT INTO TABLE FUNCTION postgresql('[host:port]','[database]', 'laion_dataset', '[postgres_user]', '[postgres_password]')
(id, url, caption, similarity, image_embedding, text_embedding)
VALUES
(2000001, 'https://chairish-prod.global.ssl.fastly.net/image/product/sized/188616b7-8743-452f-80f7-f94fee39830e/vintage-1970s-pottery-face-masks-a-pair-5154?aspect=fit&width=320&height=320', 'Vintage 1970 s Pottery Face Masks - A Pair', 0.3163678050041199, '[-0.02861, -0.004993, 0.0176, -0.0248, 0.03488, -0.015305, 0.01443, 0.04288, 0.010445, 0.04367, -0.001831, -0.03995, -0.05573, 0.01904, -0.01917, -0.01417, 0.02216, 0.02058, 0.01971, 0.00787, -0.02325, 0.04266, -0.03818, -0.00986, -0.05045, 0.03848, 0.001489, 0.04782, -0.00926, -0.04608, 0.03143, -0.05823, 0.008095, 0.00861, -0.0786, 0.00556, 0.01193, -0.00713, 0.0177, -0.0632, -0.03583, 0.02283, 0.00988, 0.02643, -0.015434, -0.03186, -0.01237, 0.02002, 0.0462, -0.04834, 0.005222, 0.02295, 0.0285, -0.02783, -0.0466, 0.011475, -0.03017, -0.01006, -0.009895, -0.013176, 0.00468, -0.0537, 0.0731, -0.02336, -0.01278, -0.01662, 0.02805, 0.001102, -0.02553, 0.00408, -0.02647, 0.02095, 0.02165, -0.03635, 0.010445, 0.02252, -0.08154, 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0.003849, -0.0576]');
# SELECT
SELECT * FROM postgresql('[host:port]','[database]', 'laion_dataset', '[postgres_user]', '[postgres_password]') where id = 2000001;
| id | url | caption | similarity | image_embedding | text_embedding |
|----|-----|---------|------------|-----------------|----------------|
| 2,000,001 | https://chairish-prod.global.ssl.fastly.net/image/product/sized/188616b7-8743-452f-80f7-f94fee39830e/vintage-1970s-pottery-face-masks-a-pair-5154?aspect=fit&width=320&height=320 | Vintage 1970s Pottery Face Masks - A Pair | 0.31636780500412 | [-0.02861, -0.004993, 0.0176, -0.0248, 0.03488, -0.015305, 0.01443, 0.04288, 0.010445, ... | [0.002466, -0.0615, -0.03017, -0.01123, 0.01449, -0.02669, 0.0602, -0.004955, -0.0777, -0.015274, ... |
# Verwendung eines nicht standardmäßigen Schemas
postgres=> CREATE SCHEMA "nice.schema";
CREATE SCHEMA
postgres=> CREATE TABLE "nice.schema"."nice.table" (a integer);
CREATE TABLE
postgres=> INSERT INTO "nice.schema"."nice.table" SELECT i FROM generate_series(0, 99) as t(i);
CREATE TABLE pg_table_schema_with_dots (a UInt32)
ENGINE PostgreSQL('[host:port]', '[database]', 'nice.table', '[postgres_user]', '[postgres_password]', 'nice.schema');