Data interaction method and interaction device based on postgreSQL client PSQL
A data interaction and client-side technology, applied in the field of data interaction, can solve problems such as excessively increasing work input, achieve the effect of reducing learning costs and improving efficiency
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[0053] In order to further explain the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.
[0054] Firstly, related concepts involved in the present invention are introduced.
[0055] SQL statements are divided into basic SQL and extended SQL (PL / SQL), which are introduced as follows:
[0056] SQL: SQL is a structured query language, which is closer to natural language. Using SQL, you only need to say what to do, not how to do it. It is composed of data definition language, data manipulation language, and data control language. It is not process-oriented, that is, the previous statement has nothing to do with the next statement. SQL is the standard language.
[0057]PL / SQL: PL / SQL (Procedural Language / SQL) is an extension of SQL, which absorbs many of the highest design features of programming languages ...
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