 Apache Cassandra™ 10 Documentation February 16, 2012Denormalize to Optimize 54 Planning for Concurrent Writes 54 Using Natural or Surrogate Row Keys 54 UUID Types for Column Names 55 Managing and Accessing Data in Cassandra 55 About Writes in Cassandra IntegerType varint Arbitrary-precision integer LongType int, bigint 8-byte long UUIDType uuid Type 1 or type 4 UUID DateType timestamp Date plus time, encoded as 8 bytes since epoch BooleanType boolean to use surrogate or natural keys for a column family. A surrogate key is a generated key (such as a UUID) that uniquely identifies a row, but has no relation to the actual data in the row. For some column0 码力 | 141 页 | 2.52 MB | 1 年前3 Apache Cassandra™ 10 Documentation February 16, 2012Denormalize to Optimize 54 Planning for Concurrent Writes 54 Using Natural or Surrogate Row Keys 54 UUID Types for Column Names 55 Managing and Accessing Data in Cassandra 55 About Writes in Cassandra IntegerType varint Arbitrary-precision integer LongType int, bigint 8-byte long UUIDType uuid Type 1 or type 4 UUID DateType timestamp Date plus time, encoded as 8 bytes since epoch BooleanType boolean to use surrogate or natural keys for a column family. A surrogate key is a generated key (such as a UUID) that uniquely identifies a row, but has no relation to the actual data in the row. For some column0 码力 | 141 页 | 2.52 MB | 1 年前3
 DBeaver Ultimate User Guide v24.2.eacommand to create the extension. For example, to install the "uuid-ossp" extension, you would run: CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; Then, the command. DBeaver will run this command on have the extension installed, you can use the function to uuid-ossp uuid_generate_v4() generate universally unique identifiers (UUID). It can be used directly in SQL queries or as a default value 627 of 1171. Price preset * Coordinate preset * String Text (template, min length, max length) UUID Address * City * Country * Domain * Email (gender, with surname, numeric suffix) * Name (gender0 码力 | 1171 页 | 94.65 MB | 1 年前3 DBeaver Ultimate User Guide v24.2.eacommand to create the extension. For example, to install the "uuid-ossp" extension, you would run: CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; Then, the command. DBeaver will run this command on have the extension installed, you can use the function to uuid-ossp uuid_generate_v4() generate universally unique identifiers (UUID). It can be used directly in SQL queries or as a default value 627 of 1171. Price preset * Coordinate preset * String Text (template, min length, max length) UUID Address * City * Country * Domain * Email (gender, with surname, numeric suffix) * Name (gender0 码力 | 1171 页 | 94.65 MB | 1 年前3
 DBeaver User Guide v24.2.eacommand to create the extension. For example, to install the "uuid-ossp" extension, you would run: CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; Then, the command. DBeaver will run this command on have the extension installed, you can use the function to uuid-ossp uuid_generate_v4() generate universally unique identifiers (UUID). It can be used directly in SQL queries or as a default value 628 of 1171. Price preset * Coordinate preset * String Text (template, min length, max length) UUID Address * City * Country * Domain * Email (gender, with surname, numeric suffix) * Name (gender0 码力 | 1171 页 | 94.79 MB | 1 年前3 DBeaver User Guide v24.2.eacommand to create the extension. For example, to install the "uuid-ossp" extension, you would run: CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; Then, the command. DBeaver will run this command on have the extension installed, you can use the function to uuid-ossp uuid_generate_v4() generate universally unique identifiers (UUID). It can be used directly in SQL queries or as a default value 628 of 1171. Price preset * Coordinate preset * String Text (template, min length, max length) UUID Address * City * Country * Domain * Email (gender, with surname, numeric suffix) * Name (gender0 码力 | 1171 页 | 94.79 MB | 1 年前3
 DBeaver Lite User Guide v24.2.eacommand to create the extension. For example, to install the "uuid-ossp" extension, you would run: CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; Then, the command. DBeaver will run this command on have the extension installed, you can use the function to uuid-ossp uuid_generate_v4() generate universally unique identifiers (UUID). It can be used directly in SQL queries or as a default value current session Alt+` ⌃V Shows context menu with database tools Ctrl+Alt+Shift+U ⌃⌥⇧U Generates UUID/GUID and inserts into an active text editor or data editor Ctrl+Alt+Shift+B ⌃⌥⇧B Open database0 码力 | 1010 页 | 79.48 MB | 1 年前3 DBeaver Lite User Guide v24.2.eacommand to create the extension. For example, to install the "uuid-ossp" extension, you would run: CREATE EXTENSION IF NOT EXISTS "uuid-ossp"; Then, the command. DBeaver will run this command on have the extension installed, you can use the function to uuid-ossp uuid_generate_v4() generate universally unique identifiers (UUID). It can be used directly in SQL queries or as a default value current session Alt+` ⌃V Shows context menu with database tools Ctrl+Alt+Shift+U ⌃⌥⇧U Generates UUID/GUID and inserts into an active text editor or data editor Ctrl+Alt+Shift+B ⌃⌥⇧B Open database0 码力 | 1010 页 | 79.48 MB | 1 年前3
共 4 条
- 1













