原创 8.17.4. Infinite (Unbounded) Ranges
8.17.4. Infinite (Unbounded) Ranges 8.17.4. 無限（無界）範圍 The lower bound of a range can be omitted, meaning that all points
2020-06-29 14:10:56
原创 8.15.4. Modifying Arrays
8.15.4. Modifying Arrays 8.15.4.修改數組 An array value can be replaced completely: 一個數組值也可以被完全替代： UPDATE sal_emp SET p
2020-06-29 14:10:56
原创 8.17.9. Indexing
8.17.9. Indexing 8.17.9.索引 GiST and SP-GiST indexes can be created for table columns of range types. For instance, to c
2020-06-29 14:10:56
原创 9.1. Logical Operators
9.1. Logical Operators 9.1.邏輯運算符 The usual logical operators are available: 常用的邏輯運算符均可用： AND OR NOT SQL uses a
2020-06-29 14:10:56
原创 8.16.4. Modifying Composite Types
8.16.4. Modifying Composite Types 8.16.4.修改複合類型 Here are some examples of the proper syntax for inserting and updating
2020-06-29 14:10:46
原创 8.17.8. Defining New Range Types
8.17.8. Defining New Range Types 8.17.8.定義範圍類型 Users can define their own range types. The most common reason to do thi
2020-06-29 14:10:45
原创 PostgreSQL usermanual翻譯暫停20200420
因工作需要加快pg usermanual的閱讀速度，故今日起暫停翻譯，待閱讀完成後有時間再繼續進行翻譯。 感謝關注。
2020-04-22 22:21:45
原创 Python是什麼
Python是一種面向對象的解釋性高級編程語言，具有動態語義。 雖然Python的速度可能沒有C、C++等編譯型語言那麼快，但它能夠節省編程時間。 官方網站：www.python.org Python提供自帶推行交互編譯器：I
2020-04-03 12:32:05
原创 9.7.2. SIMILAR TO Regular Expressions
9.7.2. SIMILAR TO Regular Expressions 9.7.2.SIMILAR TO正則表達式 string SIMILAR TO pattern [ESCAPE escape-character] str
2020-03-26 12:03:24
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原创 9.5. Binary String Functions and Operators
9.5. Binary String Functions and Operators 9.5.二進制字符串函數和運算符 This section describes functions and operators for examinin
2020-03-26 12:03:24
原创 9.7. Pattern Matching
9.7. Pattern Matching 9.7. 模式匹配 There are three separate approaches to pattern matching provided by PostgreSQL: the tra
2020-03-26 12:03:24
原创 9.4.1. format
9.4.1. format 9.4.1. format The function format produces output formatted according to a format string, in a style simi
2020-03-26 12:03:24
原创 8.16.5. Using Composite Types in Queries
8.16.5. Using Composite Types in Queries 8.16.5.在查詢中使用複合類型 There are various special syntax rules and behaviors associa
2020-03-19 04:21:45
原创 8.21. Pseudo-Types
8.21. Pseudo-Types 8.21.僞類型 The PostgreSQL type system contains a number of special-purpose entries that are collective
2020-03-19 04:21:45
原创 8.17.10. Constraints on Ranges
8.17.10. Constraints on Ranges 8.17.10.範圍上的約束 While UNIQUE is a natural constraint for scalar values, it is usually uns
2020-03-19 04:21:45