Firebird 2.5 Language Referenceidentifiers — see the section Identifiers below. ◦ Although generator values are stored as 64-bit integers, a Dialect 1 client request, SELECT GEN_ID (MyGen, 1), for example, will return the generator value numbers (DECIMAL and NUMERIC data types) are stored internally as long fixed point values (scaled integers) when the precision is greater than 9. ◦ The TIME data type is available for storing time-of-day strings must be delimited with single quotes (apostrophes). ◦ Generator values are stored as 64-bit integers. Use of Dialect 3 is strongly recommended for newly developed databases and applications. Both0 码力 | 521 页 | 2.30 MB | 1 年前3
SQLite Development with ZumeroStop using sequential integers. This choice can be further broken down into two sub-choices, both of which involve using randomness instead of sequential-ness: a. Stop using integers. Use a Universally Unique to TEXT. See Section 5.2.5.4, “UUIDs as Primary Keys” for more information. b. Continue to use integers, but make them random. This approach allows you to keep the column type as INTEGER, but requires will "never" happen. The main problem with using UUIDs is that they are 128 bits wide. In SQLite, integers are only 64 bits wide, so a UUID will not fit, which means we have to store it in a column of type0 码力 | 57 页 | 199.89 KB | 1 年前3
firebird 40 language referenceidentifiers — see the section Identifiers below. ◦ Although generator values are stored as 64-bit integers, a Dialect 1 client request, SELECT GEN_ID (MyGen, 1), for example, will return the generator value numbers (DECIMAL and NUMERIC data types) are stored internally as long fixed point values (scaled integers) when the precision is greater than 9. ◦ The TIME data type is available for storing time-of-day strings must be delimited with single quotes (apostrophes). ◦ Generator values are stored as 64-bit integers. Use of Dialect 3 is strongly recommended for newly developed databases and applications. Both0 码力 | 778 页 | 3.43 MB | 1 年前3
Firebird 2.0 ErrorCodes335544817 bad_limit_param Invalid parameter to FIRST.Only integers >= 0 are allowed. -204 335544818 bad_skip_param Invalid parameter to SKIP.Only integers >= 0 are allowed. -204 335544837 bad_substring_offset parameter %d to SUBSTRING. Only positive integers are allowed. -204 335544853 bad_substring_length Invalid length parameter %d to SUBSTRING. Negative integers are not allowed. -204 335544854 charset_not_installed0 码力 | 26 页 | 157.59 KB | 1 年前3
Firebird 2.1 ErrorCodes335544817 bad_limit_param Invalid parameter to FIRST.Only integers >= 0 are allowed. -204 335544818 bad_skip_param Invalid parameter to SKIP.Only integers >= 0 are allowed. -204 335544837 bad_substring_offset parameter @1 to SUBSTRING. Only positive integers are allowed. -204 335544853 bad_substring_length Invalid length parameter @1 to SUBSTRING. Negative integers are not allowed. -204 335544854 charset_not_installed0 码力 | 31 页 | 103.24 KB | 1 年前3
Firebird Generator Guide: A guide on how and when to use generators in Firebirdgenerator with starting value 0 to feed a NUMERIC(18) or BIGINT column (both types represent 64-bit integers), and you would insert 1000 rows per second, it would take around 300 million years (!) before the client: • If the client dialect is 1, the server returns generator values as truncated 32-bit integers to the client. But inside the database they remain 64-bit values and they do not wrap after reaching0 码力 | 20 页 | 169.00 KB | 1 年前3
TiDB 2.1.7ones. 2 2.1 Set In the set test, we insert unique integers as distinct rows into a table, and concurrently read the entire table to see what integers are present. We verify that every successfully inserted0 码力 | 9 页 | 141.29 KB | 6 月前3
PostgreSQL 16.1 Documentation................................. 2680 F.13. dict_int — example full-text search dictionary for integers ....................... 2712 F.14. dict_xsyn — example synonym full-text search dictionary .... enumerator ......................................... 2733 F.20. intarray — manipulate arrays of integers .............................................. 2735 F.21. isn — data types for international standard (0 or 1). Hexadecimal digits and the radix prefixes can be in upper or lower case. Note that only integers can have non-decimal forms, not num- bers with fractional parts. These are some examples of valid0 码力 | 2974 页 | 14.22 MB | 1 年前3
Apache Cassandra™ 10 Documentation February 16, 2012family. For example, if we decided the coupon_code column should store coupon codes in the form of integers, we could change the validation type as follows: cqlsh> ALTER TABLE users ALTER coupon_code TYPE signed integers representing a number of milliseconds since the standard base time known as the epoch: January 1 1970 at 00:00:00 GMT. Timestamp types can be input in CQL as simple long integers, giving range of column names, or COUNT(*). Column names in Cassandra can be specified as string literals or integers, in addition to named identifiers. To specify a range of columns, specify the start and end column0 码力 | 141 页 | 2.52 MB | 1 年前3
PostgreSQL 16.1 Documentation................................. 2823 F.13. dict_int — example full-text search dictionary for integers ............................ 2856 F.14. dict_xsyn — example synonym full-text search dictionary enumerator ............................................... 2878 F.20. intarray — manipulate arrays of integers .................................................... 2880 F.21. isn — data types for international (0 or 1). Hexadecimal digits and the radix prefixes can be in upper or lower case. Note that only integers can have non-decimal forms, not numbers with fractional parts. These are some examples of valid0 码力 | 3133 页 | 14.10 MB | 1 年前3
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