Tag: Query Builder
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Post Views: 19 1. Reference: In mysql 8.0, when the total number of table records is checked, the analysis and optimization of the timeout is optimized. Add WHERE ID > 0 when a COUNT SQL does not exist where condition exists. 2. Reference:How to check if table is already has a where Clause in Laravel Query Builder? The final implementation…
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Post Views: 23 1. Reference:In Laravel 9, reuse Spatie\QueryBuilder\QueryBuilder in asynchronous queue to generate query SQL 2. The current implementation scheme, for a certain field, can only use one filter, or partial, or Exact. Reference:In Yii 2.0, implement the request parameter form of the filter. 3. For a single fuzzy search, multiple accurate search fields, decide to verify the type…
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Post Views: 19 1. In MySQL 5.7, the data in the json type field is an array, and its value is:[365]. as shown in Figure 1 2. Reference: Query the constructor – where statement – json where statement:https://learnku.com/docs/laravel/6.x/queries/5171#35d9d9. JSON arrays can be queried using WhereJsonContains. as shown in Figure 2 3. The code is implemented as follows 4. Print the…
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Post Views: 18 1. Expect the generated SQL statement, as shown in Figure 1 2. LIKE: The first operand should be a field name or dB expression, and the second operand can make a string or an array, representing the value of the first operand that needs to be fuzzy. For example,[‘like’, ‘name’, ‘tester’]will generate name like%tester%. If the range…
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Post Views: 16 1. The data structure of the A table, as shown in Figure 1 2. The data structure of the B table, as shown in Figure 2 3. The current requirement is that 8 fields in the A table need to be queried, inserted into the B table, and the following commands are used to create a new…